WATCHES: Severe Thunderstorm Watch - Number 665

WWUS20 KWNS 050303
SEL5
SPC WW 050303
IDZ000-NVZ000-UTZ000-050300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 665
NWS STORM PREDICTION CENTER NORMAN OK
903 PM MDT TUE SEP 4 2007

THE NWS STORM PREDICTION CENTER HAS CANCELLED
SEVERE THUNDERSTORM WATCH NUMBER 665 ISSUED AT 205 PM MDT FOR PORTIONS OF

IDAHO
NEVADA
UTAH

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KBOI [050251]: Preliminary Local Storm Report

NWUS55 KBOI 050251
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
851 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0400 PM HAIL 7 E UNITY 44.44N 118.05W
09/04/2007 E0.50 INCH BAKER OR EMERGENCY MNGR

HAIL WASHED INTO LOW SPOTS BY 0.76 OF AN INCH OF RAIN IN
ONE HOUR COLLECTED TO A DEPTH OF 1 FOOT IN PORTIONS OF
HEREFORD OREGON.

&&

$$

JBREIDEN

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KPIH [050248]: Preliminary Local Storm Report

NWUS55 KPIH 050248
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS ID
848 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0610 PM TSTM WND DMG MONTPELIER 42.32N 111.30W
09/04/2007 BEAR LAKE ID EMERGENCY MNGR

IN THE VALLEY - CARPORT ROOF BLOWN OFF

0610 PM TSTM WND DMG MONTPELIER 42.32N 111.30W
09/04/2007 BEAR LAKE ID LAW ENFORCEMENT

BEAR LAKE SHERIFF RECEIVED REPORTS OF TREES DOWN ON
EASTSHORE ROAD AND HWY 89. ALSO SHED LIFTED AND BLOWN
ONTO HWY 9. IN BERN, ROOF OF SHED BLOWN ONTO HWY.

&&

$$

MRIEDY

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KSLC [050237]: Preliminary Local Storm Report...summary

NWUS55 KSLC 050237
LSRSLC

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
837 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0200 PM FLASH FLOOD 3 SE TORREY 38.27N 111.38W
09/04/2007 WAYNE UT PARK/FOREST SRVC

FLASH FLOOD IN CAPITOL REEF NATIONAL PARK. GRAND
WASH...SCENIC DRIVE CLOSED DUE TO FLOODING.

0515 PM TSTM WND GST 5 ESE OGDEN 41.20N 111.88W
09/04/2007 M58.00 MPH WEBER UT MESONET

OGDEN PEAK SENSOR. SOUTHWEST WIND.

0530 PM TSTM WND GST 25 SSW CLIVE 40.34N 113.23W
09/04/2007 M67.00 MPH TOOELE UT MESONET

SALT FLATS SENSOR. NORTHWEST WIND.

0536 PM FLASH FLOOD LOGAN 41.74N 111.83W
09/04/2007 CACHE UT BROADCAST MEDIA

REPORT FROM LOCAL MEDIA OF GARBAGE CANS FLOATING DOWN THE
STREETS OF LOGAN. WIDESPREAD STREET FLOODING.

0540 PM TSTM WND GST 11 W DUGWAY 40.21N 112.96W
09/04/2007 M65.00 MPH TOOELE UT MESONET

NW DECON PAD. NORTHWEST WIND.

0540 PM TSTM WND GST 22 W DUGWAY 40.19N 113.16W
09/04/2007 M58.00 MPH TOOELE UT MESONET

HORIZONTAL GRID DUGWAY. NORTHWEST WIND OUTFLOW.

0540 PM TSTM WND GST 16 NW DUGWAY 40.37N 113.00W
09/04/2007 M71.00 MPH TOOELE UT MESONET

UPPER CEDAR MOUNTAIN SENSOR. NORTHWEST WIND.

0605 PM TSTM WND GST 15 SW DUGWAY 40.10N 112.98W
09/04/2007 M63.00 MPH TOOELE UT MESONET

TOWER GRID. NORTHWEST WIND.

0615 PM TSTM WND GST PROMONTORY 41.62N 112.57W
09/04/2007 M61.00 MPH BOX ELDER UT MESONET

PROMONTORY POINT. NORTHWEST WIND.

0630 PM TSTM WND GST 6 NNE GRANTSVILLE 40.68N 112.44W
09/04/2007 M59.00 MPH TOOELE UT MESONET

BURMESTER. NORTHWEST WIND.

0645 PM TSTM WND DMG GARDEN CITY 41.93N 111.41W
09/04/2007 RICH UT TRAINED SPOTTER

MOBILE HOME ROOF BLOWN OFF.

0658 PM TSTM WND GST SALT LAKE CITY 40.78N 111.93W
09/04/2007 M58.00 MPH SALT LAKE UT ASOS

AIRPORT

0700 PM TSTM WND DMG MURRAY 40.65N 111.89W
09/04/2007 SALT LAKE UT BROADCAST MEDIA

ROOF COLLAPSE DUE TO WIND. 41,000 WITHOUT POWER. TIME
ESTIMATED.

0705 PM TSTM WND GST WEST JORDAN 40.60N 112.00W
09/04/2007 M67.00 MPH SALT LAKE UT AWOS

AIRPORT NUMBER 2. NORTHWEST WIND.

0715 PM TSTM WND DMG HILL AFB 41.12N 111.97W
09/04/2007 DAVIS UT TRAINED SPOTTER

ROOF TORN OFF. 3 INCH TREE LIMBS DOWN. TIME ESTIMATED

0717 PM TSTM WND GST SANDY 40.57N 111.85W
09/04/2007 M58.00 MPH SALT LAKE UT NWS EMPLOYEE

0720 PM TSTM WND GST 4 ESE SALT LAKE CITY 40.76N 111.86W
09/04/2007 M63.00 MPH SALT LAKE UT MESONET

UNIV OF UTAH. NORTHWEST WIND.

0725 PM TSTM WND DMG SALT LAKE CITY 40.78N 111.93W
09/04/2007 SALT LAKE UT NWS EMPLOYEE

UPPER AVENUES LARGE TREE LIMBS DOWN.

0751 PM TSTM WND GST LEHI 40.40N 111.85W
09/04/2007 M61.00 MPH UTAH UT MESONET

&&

$$

ATARDY

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KSLC [050200]: Preliminary Local Storm Report...summary

NWUS55 KSLC 050200
LSRSLC

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
800 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0200 PM FLASH FLOOD 3 SE TORREY 38.27N 111.38W
09/04/2007 WAYNE UT PARK/FOREST SRVC

FLASH FLOOD IN CAPITOL REEF NATIONAL PARK. GRAND
WASH...SCENIC DRIVE CLOSED DUE TO FLOODING.

0515 PM TSTM WND GST 5 ESE OGDEN 41.20N 111.88W
09/04/2007 M58.00 MPH WEBER UT MESONET

OGDEN PEAK SENSOR. SOUTHWEST WIND.

0530 PM TSTM WND GST 25 SSW CLIVE 40.34N 113.23W
09/04/2007 M67.00 MPH TOOELE UT MESONET

SALT FLATS SENSOR. NORTHWEST WIND.

0536 PM FLASH FLOOD LOGAN 41.74N 111.83W
09/04/2007 CACHE UT BROADCAST MEDIA

REPORT FROM LOCAL MEDIA OF GARBAGE CANS FLOATING DOWN THE
STREETS OF LOGAN. WIDESPREAD STREET FLOODING.

0540 PM TSTM WND GST 16 NW DUGWAY 40.37N 113.00W
09/04/2007 M71.00 MPH TOOELE UT MESONET

UPPER CEDAR MOUNTAIN SENSOR. NORTHWEST WIND.

0540 PM TSTM WND GST 22 W DUGWAY 40.19N 113.16W
09/04/2007 M58.00 MPH TOOELE UT MESONET

HORIZONTAL GRID DUGWAY. NORTHWEST WIND OUTFLOW.

0540 PM TSTM WND GST 11 W DUGWAY 40.21N 112.96W
09/04/2007 M65.00 MPH TOOELE UT MESONET

NW DECON PAD. NORTHWEST WIND.

0605 PM TSTM WND GST 15 SW DUGWAY 40.10N 112.98W
09/04/2007 M63.00 MPH TOOELE UT MESONET

TOWER GRID. NORTHWEST WIND.

0630 PM TSTM WND GST 6 NNE GRANTSVILLE 40.68N 112.44W
09/04/2007 M59.00 MPH TOOELE UT MESONET

BURMESTER. NORTHWEST WIND.

0658 PM TSTM WND GST SALT LAKE CITY 40.78N 111.93W
09/04/2007 M58.00 MPH SALT LAKE UT ASOS

AIRPORT

0700 PM TSTM WND DMG MURRAY 40.65N 111.89W
09/04/2007 SALT LAKE UT BROADCAST MEDIA

ROOF COLLAPSE DUE TO WIND. 41,000 WITHOUT POWER. TIME
ESTIMATED.

0705 PM TSTM WND GST WEST JORDAN 40.60N 112.00W
09/04/2007 M67.00 MPH SALT LAKE UT AWOS

AIRPORT NUMBER 2. NORTHWEST WIND.

0720 PM TSTM WND GST 4 ESE SALT LAKE CITY 40.76N 111.85W
09/04/2007 M63.00 MPH SALT LAKE UT MESONET

UNIV OF UTAH. NORTHWEST WIND.

0725 PM TSTM WND DMG SALT LAKE CITY 40.78N 111.93W
09/04/2007 SALT LAKE UT NWS EMPLOYEE

UPPER AVENUES LARGE TREE LIMBS DOWN.

0751 PM TSTM WND GST LEHI 40.40N 111.85W
09/04/2007 M61.00 MPH UTAH UT MESONET

&&

$$

ATARDY

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KBOI [050102]: Preliminary Local Storm Report

NWUS55 KBOI 050102
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
702 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0635 PM TSTM WND GST 4 SSW BANKS 44.03N 116.14W
09/04/2007 E60.00 MPH BOISE ID NWS EMPLOYEE

NWS IMET REPORTS PILOT OBSERVED ESTIMATED 60 MPH TSTM
WIND GUST NEAR THE CHIEF PARRISH FIRE.

&&

$$

DDECKER

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 050100
SWODY1
SPC AC 050058

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0758 PM CDT TUE SEP 04 2007

VALID 050100Z - 051200Z

..THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF NRN UT...

..NRN UT...
LINE OF THUNDERSTORMS ALONG SURFACE COLD FRONT -- EMBEDDED WITHIN
LARGER AREA OF ONGOING SHOWERS AND STORMS AHEAD OF ADVANCING UPPER
TROUGH -- IS MOVING EWD ACROSS THE SALT LAKE CITY REGION ATTM.
WHILE INSTABILITY IS LIMITED...DEEP-LAYER WIND FIELD SUPPORTIVE OF
ORGANIZED CONVECTION SUGGESTS THAT DAMAGING WINDS AND HAIL WILL
REMAIN POSSIBLE FOR THE NEXT 1-2 HOURS OVER NRN UT...BEFORE STORMS
MOVE INTO THE LESS UNSTABLE AIRMASS OVER THE HIGHER TERRAIN OF NRN
UT/SWRN WY.

..NERN MT...
CLUSTER OF THUNDERSTORMS CONTINUES MOVING EWD ACROSS FAR NERN MT
ATTM. THOUGH MID-LEVEL FLOW NEAR 40 KT PER EVENING GGW /GLASGOW MT/
RAOB IS CONTRIBUTING TO SHEAR SUFFICIENT FOR UPDRAFT
ORGANIZATION...STORMS WILL CONTINUE EXITING THE AXIS OF GREATER
INSTABILITY. THIS COMBINED WITH THE LOSS OF DAYTIME HEATING
SUGGESTS THAT ANY REMAINING THREAT FOR GUSTY WINDS OR HAIL SHOULD
PROVE TO BE SHORT-LIVED.

.GOSS.. 09/05/2007

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KSLC [050048]: Preliminary Local Storm Report...summary

NWUS55 KSLC 050048
LSRSLC

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
648 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0200 PM FLASH FLOOD 3 SE TORREY 38.27N 111.38W
09/04/2007 WAYNE UT PARK/FOREST SRVC

FLASH FLOOD IN CAPITOL REEF NATIONAL PARK. GRAND
WASH...SCENIC DRIVE CLOSED DUE TO FLOODING.

0515 PM TSTM WND GST 5 ESE OGDEN 41.20N 111.88W
09/04/2007 M58.00 MPH WEBER UT MESONET

OGDEN PEAK SENSOR. SOUTHWEST WIND.

0530 PM TSTM WND GST 25 SSW CLIVE 40.34N 113.23W
09/04/2007 M67.00 MPH TOOELE UT MESONET

SALT FLATS SENSOR. NORTHWEST WIND.

0536 PM FLASH FLOOD LOGAN 41.74N 111.83W
09/04/2007 CACHE UT BROADCAST MEDIA

REPORT FROM LOCAL MEDIA OF GARBAGE CANS FLOATING DOWN THE
STREETS OF LOGAN. WIDESPREAD STREET FLOODING.

0540 PM TSTM WND GST 22 W DUGWAY 40.19N 113.16W
09/04/2007 M58.00 MPH TOOELE UT MESONET

HORIZONTAL GRID DUGWAY. NORTHWEST WIND OUTFLOW.

0540 PM TSTM WND GST 16 NW DUGWAY 40.37N 113.00W
09/04/2007 M71.00 MPH TOOELE UT MESONET

UPPER CEDAR MOUNTAIN SENSOR. NORTHWEST WIND.

0540 PM TSTM WND GST 11 W DUGWAY 40.21N 112.96W
09/04/2007 M65.00 MPH TOOELE UT MESONET

NW DECON PAD. NORTHWEST WIND.

0605 PM TSTM WND GST 15 SW DUGWAY 40.10N 112.98W
09/04/2007 M63.00 MPH TOOELE UT MESONET

TOWER GRID. NORTHWEST WIND.

0630 PM TSTM WND GST 6 NNE GRANTSVILLE 40.68N 112.44W
09/04/2007 M59.00 MPH TOOELE UT MESONET

BURMESTER. NORTHWEST WIND.

&&

$$

ATARDY

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KPIH [050048]: Preliminary Local Storm Report

NWUS55 KPIH 050048
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS ID
648 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0620 PM TSTM WND GST N GEORGETOWN 42.47N 111.37W
09/04/2007 M68.00 MPH BEAR LAKE ID TRAINED SPOTTER

68 MPH PEAK WIND GUST MEASURED, FRQLTG, +SHRA, LOST POWER
AFTER WIND EVENT.

&&

$$

MRIEDY

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KEWX [050028]: Preliminary Local Storm Report...corrected To Add Highway 97

NWUS54 KEWX 050028
LSREWX

PRELIMINARY LOCAL STORM REPORT...CORRECTED TO ADD HIGHWAY 97
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
729 PM CDT TUE SEP 4 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0703 PM TORNADO 7 E GONZALES 29.51N 97.33W
09/04/2007 GONZALES TX PUBLIC

TORNADO TOUCHED DOWN TWICE 6 TO 8 MILES EAST OF GONZALES
ON HIGHWAY 97. DESTROYED SOME CHICKEN HOUSES.

&&

$$

DC

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KHNX [050017]: Preliminary Local Storm Report...summary

NWUS56 KHNX 050017 CCA
LSRHNX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
515 PM PDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0407 PM FUNNEL CLOUD 2 S ROSAMOND 34.83N 118.20W
09/01/2007 KERN CA LAW ENFORCEMENT

PUBLIC REPORTS OF A FUNNEL CLOUD RELAYED THROUGH KERN
COUNTY SHERIFF BETWEEN ROSAMOND AND LANCASTER.

0412 PM TORNADO ROSAMOND 34.86N 118.20W
09/01/2007 KERN CA TRAINED SPOTTER

TRAINED WEATHER SPOTTER LOCATED IN ROSAMOND NEAR SIERRA
HIGHWAY AND ROSAMOND BLVD...REPORTED A TORNADO NEAR AVE A
BETWEEN 40TH AND 50TH STREETS.

0412 PM TORNADO ROSAMOND 34.86N 118.20W
09/01/2007 F0 KERN CA NWS STORM SURVEY

NWS DAMAGE SURVEY DETERMINED THAT AN EF0 TORNADO TOUCHED
DOWN ABOUT 3 MILES SOUTHWEST OF ROSAMOND...THEN TRAVELED
NORTH THROUGH ROSAMOND AND NORTHEAST TO ABOUT 3 MILES
SOUTHEAST OF MOJAVE. THE PATH WAS ESTIMATED AT 12 MILES
AND THE WIDTH 75 YARDS. THE EVENT LASTED ABOUT 35
MINUTES. NO ESTIMATE OF PROPERTY DAMAGE IS AVAILABLE AT
THIS TIME.

0440 PM TSTM WND DMG ROSAMOND 34.86N 118.20W
09/01/2007 KERN CA TRAINED SPOTTER

A SPOTTER REPORTED A POWER POLE ON A HOUSE ON 53RD STREET
ON THE WEST SIDE OF ROSAMOND. TIME LISTED IS WHEN EVENT
WAS REPORTED TO NWS HNX. ACTUAL TIME MAY HAVE BEEN
EARLIER.

0442 PM TSTM WND DMG ROSAMOND 34.86N 118.20W
09/01/2007 KERN CA TRAINED SPOTTER

SPOTTER REPORTED POWER POLES DOWN IN ROSAMOND BETWEEN
40TH AND 50TH STREET WITH BLOWING DUST MOVING IN FROM THE
SOUTHWEST.

0457 PM TSTM WND DMG ROSAMOND 34.86N 118.20W
09/01/2007 KERN CA TRAINED SPOTTER

TOTAL OF SIX TELEPHONE POLES BLEW DOWN IN ROSAMOND NEAR
40TH STREET AND ROSAMOND BLVD. UPDATE ON EARLIER REPORT.
TIME IS WHEN REPORT WAS GIVEN TO NWS IN HNX.

0345 PM HAIL BORON 35.00N 117.65W
09/03/2007 E0.50 INCH KERN CA TRAINED SPOTTER

SPOTTER REPORTED HALF INCH HAIL AND WIND GUSTS TO 50 MPH
WITH THE STORM AS IT MOVED THROUGH BORON.

0525 PM TSTM WND GST 1 E MOJAVE 35.05N 118.16W
09/03/2007 M83.00 MPH KERN CA OTHER FEDERAL

AT MOJAVE SPACEPORT WITH DATA FROM EDWARDS WEATHER SYSTEM
WIND TOWER

0545 PM FLASH FLOOD MOJAVE 35.05N 118.18W
09/03/2007 KERN CA LAW ENFORCEMENT

HIGHWAY 14 FLOODED IN BOTH DIRECTIONS NEAR THE
INTERSECTION OF CALIFORNIA CITY BLVD.

0600 PM FLASH FLOOD MOJAVE 35.05N 118.18W
09/03/2007 KERN CA TRAINED SPOTTER

TRAINED NWS SPOTTER REPORTED FLOODING AROUND THE MOJAVE
AIRPORT.

&&
THIS IS A SUMMARY OF THE SEVERE WEATHER EVENTS FROM SEPTEMBER 1
THROUGH 3, 2007.
$$

JBRO/KD/CTS/JDB

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KEWX [050016]: Preliminary Local Storm Report

NWUS54 KEWX 050016
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
716 PM CDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0703 PM TORNADO 7 E GONZALES 29.51N 97.33W
09/04/2007 GONZALES TX PUBLIC

TORNADO TOUCHED DOWN TWICE 6 TO 8 MILES EAST OF GONZALES.
DESTROYED SOME CHICKEN HOUSES.

&&

$$

DC

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KHNX [050015]: Preliminary Local Storm Report...summary

NWUS56 KHNX 050015
LSRHNX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
515 PM PDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0407 PM FUNNEL CLOUD 2 S ROSAMOND 34.83N 118.20W
09/01/2007 KERN CA LAW ENFORCEMENT

PUBLIC REPORTS OF A FUNNEL CLOUD RELAYED THROUGH KERN
COUNTY SHERIFF BETWEEN ROSAMOND AND LANCASTER.

0412 PM TORNADO ROSAMOND 34.86N 118.20W
09/01/2007 KERN CA TRAINED SPOTTER

TRAINED WEATHER SPOTTER LOCATED IN ROSAMOND NEAR SIERRA
HIGHWAY AND ROSAMOND BLVD...REPORTED A TORNADO NEAR AVE A
BETWEEN 40TH AND 50TH STREETS.

0412 PM TORNADO ROSAMOND 34.86N 118.20W
09/01/2007 F0 KERN CA NWS STORM SURVEY

NWS DAMAGE SURVEY DETERMINED THAT AN EF0 TORNADO TOUCHED
DOWN ABOUT 3 MILES SOUTHWEST OF ROSAMOND...THEN TRAVELED
NORTH THROUGH ROSAMOND AND NORTHEAST TO ABOUT 3 MILES
SOUTHEAST OF MOJAVE. THE PATH WAS ESTIMATED AT 12 MILES
AND THE WIDTH 75 YARDS. THE EVENT LASTED ABOUT 35
MINUTES. NO ESTIMATE OF PROPERTY DAMAGE IS AVAILABLE AT
THIS TIME.

0440 PM TSTM WND DMG ROSAMOND 34.86N 118.20W
09/01/2007 KERN CA TRAINED SPOTTER

A SPOTTER REPORTED A POWER POLE ON A HOUSE ON 53RD STREET
ON THE WEST SIDE OF ROSAMOND. TIME LISTED IS WHEN EVENT
WAS REPORTED TO NWS HNX. ACTUAL TIME MAY HAVE BEEN
EARLIER.

0442 PM TSTM WND DMG ROSAMOND 34.86N 118.20W
09/01/2007 KERN CA TRAINED SPOTTER

SPOTTER REPORTED POWER POLES DOWN IN ROSAMOND BETWEEN
40TH AND 50TH STREET WITH BLOWING DUST MOVING IN FROM THE
SOUTHWEST.

0457 PM TSTM WND DMG ROSAMOND 34.86N 118.20W
09/01/2007 KERN CA TRAINED SPOTTER

TOTAL OF SIX TELEPHONE POLES BLEW DOWN IN ROSAMOND NEAR
40TH STREET AND ROSAMOND BLVD. UPDATE ON EARLIER REPORT.
TIME IS WHEN REPORT WAS GIVEN TO NWS IN HNX.

0345 PM HAIL BORON 35.00N 117.65W
09/03/2007 E0.50 INCH KERN CA TRAINED SPOTTER

SPOTTER REPORTED HALF INCH HAIL AND WIND GUSTS TO 50 MPH
WITH THE STORM AS IT MOVED THROUGH BORON.

0525 PM TSTM WND GST 1 E MOJAVE 35.05N 118.16W
09/03/2007 M83.00 MPH KERN CA OTHER FEDERAL

AT MOJAVE SPACEPORT WITH DATA FROM EDWARDS WEATHER SYSTEM
WIND TOWER

0545 PM FLASH FLOOD MOJAVE 35.05N 118.18W
09/03/2007 KERN CA LAW ENFORCEMENT

HIGHWAY 14 FLOODED IN BOTH DIRECTIONS NEAR THE
INTERSECTION OF CALIFORNIA CITY BLVD.

0600 PM FLASH FLOOD MOJAVE 35.05N 118.18W
09/03/2007 KERN CA TRAINED SPOTTER

TRAINED NWS SPOTTER REPORTED FLOODING AROUND THE MOJAVE
AIRPORT.

&&
THIS IS A SUNAARY OF THE SEVERE WEATHER EVENTS FROM SEPTEMBER 1
THROUGH 3, 2007.
$$

JBRO

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KBOI [050015]: Preliminary Local Storm Report

NWUS55 KBOI 050015
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
615 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0555 PM HAIL MIDDLETON 43.71N 116.62W
09/04/2007 E0.75 INCH CANYON ID AMATEUR RADIO

&&

$$

DDECKER

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KSLC [050008]: Preliminary Local Storm Report...summary

NWUS55 KSLC 050008
LSRSLC

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
608 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0200 PM FLASH FLOOD 3 SE TORREY 38.27N 111.38W
09/04/2007 WAYNE UT PARK/FOREST SRVC

FLASH FLOOD IN CAPITOL REEF NATIONAL PARK. GRAND
WASH...SCENIC DRIVE CLOSED DUE TO FLOODING.

0515 PM TSTM WND GST 5 ESE OGDEN 41.20N 111.88W
09/04/2007 M58.00 MPH WEBER UT MESONET

OGDEN PEAK SENSOR. SOUTHWEST WIND.

0530 PM TSTM WND GST 25 SSW CLIVE 40.34N 113.23W
09/04/2007 M67.00 MPH TOOELE UT MESONET

SALT FLATS SENSOR. NORTHWEST WIND.

0536 PM FLASH FLOOD LOGAN 41.74N 111.83W
09/04/2007 CACHE UT BROADCAST MEDIA

REPORT FROM LOCAL MEDIA OF GARBAGE CANS FLOATING DOWN THE
STREETS OF LOGAN. WIDESPREAD STREET FLOODING.

0540 PM TSTM WND GST 22 W DUGWAY 40.19N 113.16W
09/04/2007 M58.00 MPH TOOELE UT MESONET

HORIZONTAL GRID DUGWAY. NORTHWEST WIND OUTFLOW.

0540 PM TSTM WND GST 16 NW DUGWAY 40.37N 113.00W
09/04/2007 M71.00 MPH TOOELE UT MESONET

UPPER CEDAR MOUNTAIN SENSOR. NORTHWEST WIND.

0540 PM TSTM WND GST 11 W DUGWAY 40.21N 112.96W
09/04/2007 M65.00 MPH TOOELE UT MESONET

NW DECON PAD. NORTHWEST WIND.

&&

$$

ATARDY

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KLZK [050007]: Preliminary Local Storm Report

NWUS54 KLZK 050007
LSRLZK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
707 PM CDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0645 PM FLASH FLOOD 2 N HAZEN 34.82N 91.57W
09/04/2007 PRAIRIE AR LAW ENFORCEMENT

HIGHWAY 11 NEAR HAZEN IMPASSABLE DUE TO HIGH WATER OVER
THE ROAD.

&&

$$

56

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KLZK [050005]: Preliminary Local Storm Report

NWUS54 KLZK 050005
LSRLZK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
705 PM CDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

&&

$$

56

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MESO: Mesoscale Discussion 1933

ACUS11 KWNS 042358
SWOMCD
SPC MCD 042358
WYZ000-UTZ000-IDZ000-NVZ000-050200-

MESOSCALE DISCUSSION 1933
NWS STORM PREDICTION CENTER NORMAN OK
0658 PM CDT TUE SEP 04 2007

AREAS AFFECTED...PORTIONS NRN UT...SERN ID...EXTREME W-CENTRAL/SWRN
WY...SMALL PART OF NERN NV.

CONCERNING...SEVERE THUNDERSTORM WATCH 665...

VALID 042358Z - 050200Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 665
CONTINUES.

SCATTERED TSTMS -- A FEW OF WHICH MAY PRODUCE SVR GUSTS -- CONTINUE
TO MOVE NEWD ACROSS MAINLY CENTRAL/NRN PORTIONS WW AREA. THREAT MAY
BRIEFLY/MRGLLY EXTEND E OF WW INTO PORTIONS FAR WRN WY...HOWEVER
MUCH DRIER AND MORE STABLE AIR MASS IS EVIDENT E AND NE OF WASATCH
RANGE...WHICH SHOULD PRECLUDE EXTENSION OF WW INTO THOSE AREAS. AIR
MASS OVER N-CENTRAL UT -- S AND SE OF ONGOING ACTIVITY -- WILL
REMAIN FAVORABLY MOIST AND UNSTABLE FOR ANOTHER 2-3 HOURS WITH SFC
DEW POINTS MID 40S TO LOWER 50S F AND MLCAPES 500-800 J/KG.
WELL-MIXED SUBCLOUD LAYER WILL AID POTENTIAL FOR STG-SVR GUSTS TO
REACH SFC. ISOLATED LARGE HAIL ALSO IS POSSIBLE IN ENVIRONMENT
FAVORING STORM ROTATION. EFFECTIVE SHEAR VALUES INCREASE FROM
AROUND 35 KT OVER CENTRAL UT TO NEAR 50 KT AROUND GREAT SALT LAKE.

WW MAY BE CLEARED BEHIND STRONG WLY/NWLY WIND SHIFT AND SFC
DRYING/COOLING ASSOCIATED WITH CONVECTIVE BAND THAT EXTENDS AT 2345Z
FROM CASSIA COUNTY ID SWWD ACROSS BOX ELDER COUNTY UT TO NRN WHITE
PINE COUNTY NV. CONSIDERABLE DECREASE IN SFC THETAE...BUOYANCY AND
CONVERGENCE WILL CONTINUE W OF THAT ACTIVITY...WITH AIR MASS
UNFAVORABLE FOR ADDITIONAL/ORGANIZED SVR DEVELOPMENT.

.EDWARDS.. 09/04/2007

..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...RIW...SLC...PIH...LKN...

39531551 40281430 41301327 42171324 43071219 43041060
42111026 41031000 40161044 39671330

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KLKN [042358]: Preliminary Local Storm Report

NWUS55 KLKN 042358
LSRLKN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ELKO NV
457 PM PDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0257 PM TSTM WND GST 7 SW WEST WENDOVER 40.70N 114.21W
09/04/2007 M59 MPH ELKO NV MESONET

MEASURED AT SPRUCE MOUNTAIN RAWS - TIME ESTIMATED BASED
ON RADAR

&&

$$

GRZYWACZ

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KSLC [042351]: Preliminary Local Storm Report...summary

NWUS55 KSLC 042351
LSRSLC

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
551 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0200 PM FLASH FLOOD 3 SE TORREY 38.27N 111.38W
09/04/2007 WAYNE UT PARK/FOREST SRVC

FLASH FLOOD IN CAPITOL REEF NATIONAL PARK. GRAND
WASH...SCENIC DRIVE CLOSED DUE TO FLOODING.

0530 PM TSTM WND GST 25 SSW CLIVE 40.34N 113.23W
09/04/2007 M67.00 MPH TOOELE UT MESONET

SALT FLATS SENSOR. NORTHWEST WIND.

0536 PM FLASH FLOOD LOGAN 41.74N 111.83W
09/04/2007 CACHE UT BROADCAST MEDIA

REPORT FROM LOCAL MEDIA OF GARBAGE CANS FLOATING DOWN THE
STREETS OF LOGAN. WIDESPREAD STREET FLOODING.

0540 PM TSTM WND GST 22 W DUGWAY 40.19N 113.16W
09/04/2007 M58.00 MPH TOOELE UT MESONET

HORIZONTAL GRID DUGWAY. NORTHWEST WIND OUTFLOW.

&&

$$

ATARDY

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KSLC [042338]: Preliminary Local Storm Report

NWUS55 KSLC 042338
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
537 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0536 PM FLASH FLOOD LOGAN 41.74N 111.83W
09/04/2007 CACHE UT BROADCAST MEDIA

REPORT FROM LOCAL MEDIA OF GARBAGE CANS FLOATING DOWN THE
STREETS OF LOGAN. WIDESPREAD STREET FLOODING.

&&

$$

BMCINERN

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MESO: Mesoscale Discussion 1932

ACUS11 KWNS 042318
SWOMCD
SPC MCD 042318
AZZ000-CAZ000-050145-

MESOSCALE DISCUSSION 1932
NWS STORM PREDICTION CENTER NORMAN OK
0618 PM CDT TUE SEP 04 2007

AREAS AFFECTED...PORTIONS SERN CA...SWRN AZ.

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 042318Z - 050145Z

CONVECTIVE COVERAGE MAY INCREASE FOR ANOTHER COUPLE HOURS ACROSS
LOWLANDS OF SERN CA/SWRN AZ -- NAMELY IMPERIAL/CO RIVER VALLEYS --
WITH OCCASIONAL STG-SVR GUSTS AND LOCALIZED HEAVY RAINFALL POSSIBLE.
BRIEF/HIGHLY LOCALIZED RAIN RATES 2-3 INCHES/HOUR MAY OCCUR IN
STRONGEST CELLS...WHICH WILL CONTINUE TO BE SLOW-MOVING.

ISOLATED STG-SVR TSTMS ARE MOVING EWD OFF MOUNTAIN INTO IMPERIAL
VALLEY...ALONG WITH ADDITIONAL ACTIVITY NOW OVER SWRN AZ S-SW OF
GBN...MOVING WWD TOWARD LOWER CO RIVER. ADDITIONAL DEVELOPMENT ALSO
IS POSSIBLE. PRECONVECTIVE BOUNDARY LAYER OVER THIS REGION WILL
REMAIN FAVORABLE THROUGH AT LEAST 02Z. SFC DEW POINTS 60S/LOW 70S F
LINGER DESPITE DEEP MIXING OF BOUNDARY LAYER. THIS IS DUE IN LARGE
PART TO COMPENSATING MOIST ADVECTION ASSOCIATED WITH 1-2 KM DEEP SLY
GULF SURGE SAMPLED BY VWP FROM YUM. ASSOCIATED MLCAPES 1000-2000
J/KG OVER IMPERIAL VALLEY DIMINISH EWD ACROSS CO RIVER. WELL MIXED
SUBCLOUD REGION WILL SUPPORT POTENTIAL FOR STG-SVR GUSTS TO REACH
SFC...WITH DCAPES AROUND 1000-1500 J/KG ESTIMATED OVER MUCH OF
DISCUSSION AREA. DEEPENING/PROGRESSION OF MID/UPPER TROUGH NOW
ACROSS NRN CA/ORE HAS RESULTED IN SWD DISPLACEMENT OF RIDGING
ALOFT...AND THEREFORE...PRESENCE OF WEAK MID/UPPER WINDS AND SLOW
STORM MOTION DRIVEN MAINLY BY OUTFLOW AND FORWARD-PROPAGATION. RICH
INFLOW-LAYER MOISTURE AND SLOW STORM MOTIONS WILL ENHANCE LOCAL
HEAVY RAIN HAZARD.

.EDWARDS.. 09/04/2007

..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...TWC...PSR...VEF...SGX...

32611579 33101594 33641607 34011603 34571564 34591451
34201395 33721343 32871294 31811263 32481480 32721469

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KHNX [042255]: Preliminary Local Storm Report...corrected

NWUS56 KHNX 042255
LSRHNX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
354 PM PDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0430 PM TORNADO ROSAMOND 34.86N 118.20W
09/01/2007 F0 KERN CA NWS STORM SURVEY

NWS DAMAGE SURVEY DETERMINED THAT AN EF0 TORNADO TOUCHED
DOWN ABOUT 3 MILES SOUTHWEST OF ROSAMOND...THEN TRAVELED
NORTH THROUGH ROSAMOND AND NORTHEAST TO ABOUT 3 MILES
SOUTHEAST OF MOJAVE. THE PATH WAS ESTIMATED AT 11 MILES
AND THE WIDTH 75 YARDS. THE EVENT LASTED ABOUT 20
MINUTES. NO ESTIMATE OF PROPERTY DAMAGE IS AVAILABLE AT
THIS TIME.

&&

$$

JBRO

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MESO: Mesoscale Discussion 1931

ACUS11 KWNS 042248
SWOMCD
SPC MCD 042248
NDZ000-MTZ000-050115-

MESOSCALE DISCUSSION 1931
NWS STORM PREDICTION CENTER NORMAN OK
0548 PM CDT TUE SEP 04 2007

AREAS AFFECTED...PORTIONS NERN/E-CENTRAL MT...NWRN AND EXTREME
W-CENTRAL ND.

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 042248Z - 050115Z

WIDELY SCATTERED TSTMS HAVE DEVELOPED RAPIDLY ALONG SFC COLD FRONT
-- ANALYZED AT 2215Z FROM EXTREME NWRN DANIELS COUNTY MT SWWD TO
ABOUT 10 E JDN...THEN SWWD TO FRONTAL WAVE LOW INVOF BIL.
ADDITIONAL DEVELOPMENT IS POSSIBLE ALONG COLD FRONT AS IT MOVES
EWD/SEWD OVER DISCUSSION AREA. ISOLATED SVR GUSTS AND HAIL ARE
POSSIBLE.

WARM FRONT ALSO IS ANALYZED FROM NEAR I-94 IN ERN/CENTRAL ND NWWD
ACROSS NERN MT...NE OF WHICH SFC THETAE DIMINISHES CONSIDERABLY.
MODIFIED GGW RAOB AND FCST RUC SOUNDINGS OVER THIS REGION INDICATE
NARROW CORRIDOR OF FAVORABLE BUOYANCY AHEAD OF SFC COLD FRONT...ATOP
DEEP AND WELL-MIXED BOUNDARY LAYER CONDUCIVE FOR MAINTAINING STG-SVR
GUSTS AND LARGE HAIL. SFC TEMPS LOW-MID 90S...DEW POINTS 50S F AND
8.5-9 DEG C/KM LOW-MIDLEVEL LAPSE RATES SUPPORT MLCAPES 1500-2000
J/KG. KINEMATIC PROFILES ALSO WILL BE AT LEAST MRGLLY
FAVORABLE...WITH 30-40 KT EFFECTIVE BULK SHEAR. VEERING WITH HEIGHT
IN LOW LEVELS YIELDS WELL-CURVED HODOGRAPHS WITH 150-200 J/KG OF 0-3
KM SRH...SUPPORTING POTENTIAL FOR ROTATION IN RELATIVELY DISCRETE
CELLS. MAIN LIMITING FACTORS MAY BE CONSIDERABLE STRENGTHENING OF
SBCINH WITH EWD EXTENT...AND DIABATIC COOLING OF NEAR-SFC LAYER
EXPECTED AFTER ANOTHER 2-3 HOURS.

PROGS REASONABLY INDICATE 30-35 KT SELY/SSELY LLJ DEVELOPING AFTER
ABOUT 02Z ACROSS WRN SD WITH 850 MB DEW POINTS 10-12 DEG C.
ASSOCIATED MOISTURE/INSTABILITY AND STORM-RELATIVE INFLOW MAY
SUPPORT SOME HAIL POTENTIAL WITH TSTMS...EVEN AFTER INFLOW-LAYER
PARCELS BECOME ELEVATED FOR STORMS MOVING OVER/NE OF SFC WARM FRONT.

.EDWARDS.. 09/04/2007

..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...BIS...BYZ...GGW...

46760714 47650639 49010603 48990152 47420302 46680570

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KGGW [042226]: Preliminary Local Storm Report

NWUS55 KGGW 042226
LSRGGW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
426 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0407 PM HAIL SAINT MARIE 48.40N 106.53W
09/04/2007 E0.88 INCH VALLEY MT PUBLIC

&&

$$

JAMBA

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KSLC [042149]: Preliminary Local Storm Report

NWUS55 KSLC 042149
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
349 PM MDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0200 PM FLASH FLOOD 3 SE TORREY 38.27N 111.38W
09/04/2007 WAYNE UT PARK/FOREST SRVC

FLASH FLOOD IN CAPITOL REEF NATIONAL PARK. GRAND
WASH...SCENIC DRIVE CLOSED DUE TO FLOODING.

&&

$$

BMCINERN

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KLZK [042123]: Preliminary Local Storm Report

NWUS54 KLZK 042123
LSRLZK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
423 PM CDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0410 PM FLASH FLOOD SEARCY 35.24N 91.73W
09/04/2007 WHITE AR EMERGENCY MNGR

STREET FLOODING REPORTED IN SEARCY...WITH PANTHER CREEK
AND OTHER CREEKS REACHING BANKFULL.

&&

$$

58

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KLZK [042100]: Preliminary Local Storm Report

NWUS54 KLZK 042100
LSRLZK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
400 PM CDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0350 PM FLASH FLOOD CONWAY 35.09N 92.45W
09/04/2007 FAULKNER AR NWS EMPLOYEE

STREETS WERE BEGINNING TO FLOOD IN CONWAY.

&&

$$

58

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KPDT [042045]: Preliminary Local Storm Report

NWUS56 KPDT 042045
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
144 PM PDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0142 PM HEAVY RAIN 8 S KIMBERLY 44.63N 119.64W
09/04/2007 M0.65 INCH GRANT OR TRAINED SPOTTER

0.65 INCHES IN ONE HOUR

&&

$$

RT

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DAY1SVR: Day 1 Convective Outlook Resent 1

ACUS01 KWNS 042031
SWODY1
SPC AC 042031

DAY 1 CONVECTIVE OUTLOOK RESENT 1
NWS STORM PREDICTION CENTER NORMAN OK
0331 PM CDT TUE SEP 04 2007

VALID 042000Z - 051200Z

..THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF FAR NE NV...NW
UT AND FAR SRN ID...

CORRECTED FOR GEN TSTM LINE

..RETRANSMITTED PER REQUEST...

..ERN ID/NE NV/NRN UT...
LATEST WATER VAPOR IMAGERY SHOWS A DEEPENING UPPER-LEVEL LOW ACROSS
WRN ORE. THIS FEATURE WILL CONTINUE TO MOVE SEWD INCREASING
LARGE-SCALE ASCENT ACROSS THE REGION FROM NORTHWEST TO SOUTHEAST
THIS AFTERNOON AND EVENING. THIS WILL CONTINUE TO SUPPORT THE
DEVELOPMENT OF NUMEROUS THUNDERSTORMS ACROSS ERN NV...CNTRL UT
EXTENDING NWD ACROSS ERN ID AND NW WY.

SUBSTANTIAL VERTICAL SHEAR IS CURRENTLY PRESENT ACROSS THE REGION
SHOWN BY REGIONAL WSR-88D VWPS WITH 0-6 KM SHEAR VALUES RANGING FROM
60 KT IN SRN ID TO 30 KT IN ECNTRL ID AND NRN UT. THIS WILL BE
FAVORABLE FOR STORM ORGANIZATION WHERE SUFFICIENT INSTABILITY EXISTS
THIS AFTERNOON. OBJECTIVE ANALYSIS CURRENTLY SHOWS THE STRONGEST
INSTABILITY ACROSS ERN NV BUT FURTHER DESTABILIZATION SHOULD TAKE
PLACE ALONG AND EAST OF A SFC TROUGH EXTENDING NWD INTO SRN ID AND
ERN ACROSS NRN UT. LAPSE RATES ARE CURRENTLY VERY STEEP ESPECIALLY
AT LOW-LEVELS ACROSS MUCH OF THE REGION. THIS COMBINED WITH
INCREASING INSTABILITY AND THE MODERATE TO STRONG VERTICAL SHEAR
SHOULD BE SUFFICIENT FOR A THREAT FOR LARGE HAIL AND ISOLATED
DAMAGING WINDS LATE THIS AFTERNOON...REFERENCE MCD 1930.

..SE ORE...
WATER VAPOR IMAGERY CURRENTLY SHOWS AN UPPER-LEVEL LOW OVER WRN ORE.
THIS FEATURE WILL MOVE SEWD ACROSS SE ORE LATE THIS AFTERNOON WITH
NUMEROUS THUNDERSTORMS DEVELOPING NEAR AND JUST AHEAD OF THE
UPPER-LOW. ALTHOUGH LOW TO MID-LEVEL MOISTURE IS LIMITED...COLD AIR
ALOFT /500 MB TEMPS OF -16C/ IS PRESENT IN THE CORE OF THE
UPPER-LOW. IN ADDITION...OBJECTIVE ANALYSIS SHOWS VERY STEEP LOW TO
MID-LEVEL LAPSE RATES IN THE HARNEY BASIN OF SE ORE. THIS MAY BE
ENOUGH TO SUPPORT A MARGINAL THREAT FOR HAIL THIS AFTERNOON.

.BROYLES.. 09/04/2007

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WATCHES: Severe Thunderstorm Watch Number 665

WWUS20 KWNS 042004
SEL5
SPC WW 042004
IDZ000-NVZ000-UTZ000-050300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 665
NWS STORM PREDICTION CENTER NORMAN OK
205 PM MDT TUE SEP 4 2007

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

SOUTHEAST IDAHO
NORTHEAST NEVADA
NORTHERN UTAH

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 205 PM UNTIL
900 PM MDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 90
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 85 MILES WEST
SOUTHWEST OF WENDOVER UTAH TO 65 MILES EAST SOUTHEAST OF MALAD
CITY IDAHO. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...THUNDERSTORMS ARE INTENSIFYING OVER NORTHEAST NV AHEAD
OF UPPER TROUGH...AND IN REGION OF STRONG DAYTIME HEATING. THESE
STORMS ARE LIKELY TO BECOME SEVERE THIS AFTERNOON AND EARLY
EVENING...MOVING/DEVELOPING EASTWARD INTO PARTS OF NORTHERN UT AND
SOUTHEAST ID. COOLING TEMPERATURES ALOFT AND FAVORABLE VERTICAL
SHEAR PROFILES INDICATE A RISK OF BOWS/SUPERCELLS CAPABLE OF HAIL
AND DAMAGING WINDS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 24030.

..HART

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DAY1SVR: Day 1 Convective Outlook Corr 1

ACUS01 KWNS 042000
SWODY1
SPC AC 041958

DAY 1 CONVECTIVE OUTLOOK CORR 1
NWS STORM PREDICTION CENTER NORMAN OK
0258 PM CDT TUE SEP 04 2007

VALID 042000Z - 051200Z

..THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF FAR NE NV...NW
UT AND FAR SRN ID...

CORRECTED FOR GEN TSTM LINE

..ERN ID/NE NV/NRN UT...
LATEST WATER VAPOR IMAGERY SHOWS A DEEPENING UPPER-LEVEL LOW ACROSS
WRN ORE. THIS FEATURE WILL CONTINUE TO MOVE SEWD INCREASING
LARGE-SCALE ASCENT ACROSS THE REGION FROM NORTHWEST TO SOUTHEAST
THIS AFTERNOON AND EVENING. THIS WILL CONTINUE TO SUPPORT THE
DEVELOPMENT OF NUMEROUS THUNDERSTORMS ACROSS ERN NV...CNTRL UT
EXTENDING NWD ACROSS ERN ID AND NW WY.

SUBSTANTIAL VERTICAL SHEAR IS CURRENTLY PRESENT ACROSS THE REGION
SHOWN BY REGIONAL WSR-88D VWPS WITH 0-6 KM SHEAR VALUES RANGING FROM
60 KT IN SRN ID TO 30 KT IN ECNTRL ID AND NRN UT. THIS WILL BE
FAVORABLE FOR STORM ORGANIZATION WHERE SUFFICIENT INSTABILITY EXISTS
THIS AFTERNOON. OBJECTIVE ANALYSIS CURRENTLY SHOWS THE STRONGEST
INSTABILITY ACROSS ERN NV BUT FURTHER DESTABILIZATION SHOULD TAKE
PLACE ALONG AND EAST OF A SFC TROUGH EXTENDING NWD INTO SRN ID AND
ERN ACROSS NRN UT. LAPSE RATES ARE CURRENTLY VERY STEEP ESPECIALLY
AT LOW-LEVELS ACROSS MUCH OF THE REGION. THIS COMBINED WITH
INCREASING INSTABILITY AND THE MODERATE TO STRONG VERTICAL SHEAR
SHOULD BE SUFFICIENT FOR A THREAT FOR LARGE HAIL AND ISOLATED
DAMAGING WINDS LATE THIS AFTERNOON...REFERENCE MCD 1930.

..SE ORE...
WATER VAPOR IMAGERY CURRENTLY SHOWS AN UPPER-LEVEL LOW OVER WRN ORE.
THIS FEATURE WILL MOVE SEWD ACROSS SE ORE LATE THIS AFTERNOON WITH
NUMEROUS THUNDERSTORMS DEVELOPING NEAR AND JUST AHEAD OF THE
UPPER-LOW. ALTHOUGH LOW TO MID-LEVEL MOISTURE IS LIMITED...COLD AIR
ALOFT /500 MB TEMPS OF -16C/ IS PRESENT IN THE CORE OF THE
UPPER-LOW. IN ADDITION...OBJECTIVE ANALYSIS SHOWS VERY STEEP LOW TO
MID-LEVEL LAPSE RATES IN THE HARNEY BASIN OF SE ORE. THIS MAY BE
ENOUGH TO SUPPORT A MARGINAL THREAT FOR HAIL THIS AFTERNOON.

.BROYLES.. 09/04/2007

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MESO: Mesoscale Discussion 1930

ACUS11 KWNS 041950
SWOMCD
SPC MCD 041950
UTZ000-IDZ000-NVZ000-042045-

MESOSCALE DISCUSSION 1930
NWS STORM PREDICTION CENTER NORMAN OK
0250 PM CDT TUE SEP 04 2007

AREAS AFFECTED...NERN NV/NRN UT/S CNTRL AND SERN ID

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 041950Z - 042045Z

CONVECTION IS REDEVELOPING OVER THE HIGHER TERRAIN OF EAST CENTRAL
AND NERN NV...EXTREME NWRN UT...AND SOUTH CENTRAL ID. CONVECTIVE
TRENDS WILL BE MONITORED AND A WATCH MAY BE POSSIBLE NEXT 1-2 HOURS.

VISIBLE SATELLITE IMAGERY...RADAR...AND LIGHTNING NETWORK DATA ALL
INDICATE AN INCREASE IN DEEP CONVECTION ACROSS NRN PARTS OF THE
GREAT BASIN. ACTIVITY IS OCCURRING IN ADVANCE OF SEWD MOVING UPPER
LOW OVER WRN OREGON...WITHIN WRN EDGE OF RESIDUAL MOISTURE AXIS
ACROSS ERN NV/UT AND SRN ID. STRONG HEATING IN THE WAKE OF AN
EARLIER SHORT WAVE TROUGH MOVING ACROSS ERN UT HAS CONTRIBUTED TO
DESTABILIZATION WITH MAXIMUM MLCAPE OF 1000-1300 J/KG OVER NERN NV
AND NWRN UT. THIS HAS ALSO RESULTED IN THE DEVELOPMENT OF A DEEP
WELL-MIXED BOUNDARY LAYER WITH 30-40F SURFACE T-TD SPREADS. AS THE
LEADING EDGE OF STRONGER SWLY WINDS IN THE SERN QUADRANT OF THE
UPPER LOW ADVANCES ACROSS THE REGION...EFFECTIVE BULK SHEAR WILL
CONTINUE TO INCREASE WITH 35-45 KT CURRENTLY OVER THE DISCUSSION
AREA. THUNDERSTORMS ARE EXPECTED TO CONTINUE INCREASING DURING THE
AFTERNOON AND AREA WILL BE MONITORED FOR A POSSIBLE WATCH.

.WEISS/GUYER.. 09/04/2007

..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...SLC...PIH...BOI...LKN...

39581594 41661566 43421312 43131140 40231121 38911289

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 041939
SWODY1
SPC AC 041937

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0237 PM CDT TUE SEP 04 2007

VALID 042000Z - 051200Z

..THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF FAR NE NV...NW
UT AND FAR SRN ID...

..ERN ID/NE NV/NRN UT...
LATEST WATER VAPOR IMAGERY SHOWS A DEEPENING UPPER-LEVEL LOW ACROSS
WRN ORE. THIS FEATURE WILL CONTINUE TO MOVE SEWD INCREASING
LARGE-SCALE ASCENT ACROSS THE REGION FROM NORTHWEST TO SOUTHEAST
THIS AFTERNOON AND EVENING. THIS WILL CONTINUE TO SUPPORT THE
DEVELOPMENT OF NUMEROUS THUNDERSTORMS ACROSS ERN NV...CNTRL UT
EXTENDING NWD ACROSS ERN ID AND NW WY.

SUBSTANTIAL VERTICAL SHEAR IS CURRENTLY PRESENT ACROSS THE REGION
SHOWN BY REGIONAL WSR-88D VWPS WITH 0-6 KM SHEAR VALUES RANGING FROM
60 KT IN SRN ID TO 30 KT IN ECNTRL ID AND NRN UT. THIS WILL BE
FAVORABLE FOR STORM ORGANIZATION WHERE SUFFICIENT INSTABILITY EXISTS
THIS AFTERNOON. OBJECTIVE ANALYSIS CURRENTLY SHOWS THE STRONGEST
INSTABILITY ACROSS ERN NV BUT FURTHER DESTABILIZATION SHOULD TAKE
PLACE ALONG AND EAST OF A SFC TROUGH EXTENDING NWD INTO SRN ID AND
ERN ACROSS NRN UT. LAPSE RATES ARE CURRENTLY VERY STEEP ESPECIALLY
AT LOW-LEVELS ACROSS MUCH OF THE REGION. THIS COMBINED WITH
INCREASING INSTABILITY AND THE MODERATE TO STRONG VERTICAL SHEAR
SHOULD BE SUFFICIENT FOR A THREAT FOR LARGE HAIL AND ISOLATED
DAMAGING WINDS LATE THIS AFTERNOON...REFERENCE MCD 1930.

..SE ORE...
WATER VAPOR IMAGERY CURRENTLY SHOWS AN UPPER-LEVEL LOW OVER WRN ORE.
THIS FEATURE WILL MOVE SEWD ACROSS SE ORE LATE THIS AFTERNOON WITH
NUMEROUS THUNDERSTORMS DEVELOPING NEAR AND JUST AHEAD OF THE
UPPER-LOW. ALTHOUGH LOW TO MID-LEVEL MOISTURE IS LIMITED...COLD AIR
ALOFT /500 MB TEMPS OF -16C/ IS PRESENT IN THE CORE OF THE
UPPER-LOW. IN ADDITION...OBJECTIVE ANALYSIS SHOWS VERY STEEP LOW TO
MID-LEVEL LAPSE RATES IN THE HARNEY BASIN OF SE ORE. THIS MAY BE
ENOUGH TO SUPPORT A MARGINAL THREAT FOR HAIL THIS AFTERNOON.

.BROYLES.. 09/04/2007

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MESO: Mesoscale Discussion 1930

ACUS11 KWNS 041933
SWOMCD
SPC MCD 041933
UTZ000-IDZ000-NVZ000-042030-

MESOSCALE DISCUSSION 1930
NWS STORM PREDICTION CENTER NORMAN OK
0233 PM CDT TUE SEP 04 2007

AREAS AFFECTED...NERN NV/NRN UT/S CNTRL AND SERN ID

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 041933Z - 042030Z

CONVECTION IS REDEVELOPING OVER THE HIGHER TERRAIN OF EAST CENTRAL
AND NERN NV...EXTREME NWRN UT...AND SOUTH CENTRAL ID. CONVECTIVE
TRENDS WILL BE MONITORED AND A WATCH MAY BE POSSIBLE NEXT 1-2 HOURS.

VISIBLE SATELLITE IMAGERY...RADAR...AND LIGHTNING NETWORK DATA ALL
INDICATE AN INCREASE IN DEEP CONVECTION ACROSS NRN PARTS OF THE
GREAT BASIN. ACTIVITY IS OCCURRING IN ADVANCE OF SEWD MOVING UPPER
LOW OVER WRN OREGON...WITHIN WRN EDGE OF RESIDUAL MOISTURE AXIS
ACROSS ERN NV/UT AND SRN ID. STRONG HEATING IN THE WAKE OF AN
EARLIER SHORT WAVE TROUGH MOVING ACROSS ERN UT HAS CONTRIBUTED TO
DESTABILIZATION WITH MAXIMUM MLCAPE OF 1000-1300 J/KG OVER NERN NV
AND NWRN UT. THIS HAS ALSO RESULTED IN THE DEVELOPMENT OF A DEEP
WELL-MIXED BOUNDARY LAYER WITH 30-40F SURFACE T-TD SPREADS. AS THE
LEADING EDGE OF STRONGER SWLY WINDS IN THE SERN QUADRANT OF THE
UPPER LOW ADVANCES ACROSS THE REGION...EFFECTIVE BULK SHEAR WILL
CONTINUE TO INCREASE WITH 35-45 KT CURRENTLY OVER THE DISCUSSION
AREA. THUNDERSTORMS ARE EXPECTED TO CONTINUE INCREASING DURING THE
AFTERNOON AND AREA WILL BE MONITORED FOR A POSSIBLE WATCH.

.WEISS/GUYER.. 09/04/2007

..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...SLC...PIH...BOI...LKN...

39581594 41661566 43421312 43131140 40231121 38911289

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 041730
SWODY2
SPC AC 041728

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1228 PM CDT TUE SEP 04 2007

VALID 051200Z - 061200Z

..THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF NE UT...ERN ID
AND WRN WY...

..ERN ID/WRN WY/NE UT...
LATEST WATER VAPOR IMAGERY SHOWS A WELL-DEVELOPED UPPER-LEVEL TROUGH
CENTERED NEAR THE OREGON COAST. THIS FEATURE IS FORECAST TO DIG SEWD
INTO THE INTERMOUNTAIN WEST LATE TONIGHT AND WEDNESDAY WITH THE
LEADING EDGE OF LARGE-SCALE ASCENT SPREADING EWD ACROSS THE SLIGHT
RISK AREA. THE LIFT AHEAD OF THE TROUGH ALONG WITH SFC HEATING
SHOULD SUPPORT SCATTERED THUNDERSTORM DEVELOPMENT ACROSS THE REGION
WEDNESDAY AFTERNOON.

A 60 KT MID-LEVEL JET ASSOCIATED WITH THE UPPER-LEVEL TROUGH WILL
ROUND THE BASE OF THE UPPER-LEVEL TROUGH MOVING ACROSS NRN UT DURING
THE DAY. THIS WILL CREATE STRONG VERTICAL SHEAR PROFILES FAVORABLE
FOR ORGANIZED SEVERE STORMS WHERE INSTABILITY BECOMES MAXIMIZED
WEDNESDAY AFTERNOON. THE MAIN QUESTION IS WHERE THE INSTABILITY AXIS
WILL SET UP AHEAD OF THE APPROACHING TROUGH. MODEL CONSENSUS PLACES
THE STRONGEST INSTABILITY /SBCAPES 500-1000 J/KG/ FROM SALT LAKE
CITY EXTENDING NWD TO NEAR POCATELLO ID WITH DRIER AIR LOCATED SWWD
ACROSS WCNTRL UT AND COOLER SFC AIR LOCATED ACROSS ERN ID. ALTHOUGH
LOW TO MID-LEVEL MOISTURE SHOWN ON FORECAST SOUNDINGS WILL NOT BE
PARTICULARLY GREAT EVEN ALONG THE INSTABILITY AXIS...THE ENHANCED
LIFT...STRONG SHEAR AND COLD AIR ALOFT SHOULD STILL BE FAVORABLE FOR
LARGE HAIL. STORMS THAT FORM EWD ACROSS WRN WY WILL ALSO HAVE ACCESS
TO VERY STEEP LOW-LEVEL LAPSE RATES WHICH COULD ALSO SUPPORT AN
ISOLATED WIND DAMAGE THREAT.

..SE ND/NRN MN/NE SD...
A SLOW MOVING COLD FRONT IS FORECAST TO BE IN PLACE FROM NRN MN
EXTENDING SWWD INTO SERN ND. THIS BOUNDARY WILL BE THE FOCUS FOR
THUNDERSTORM DEVELOPMENT AS LOW-LEVEL CONVERGENCE INCREASES DURING
THE LATE AFTERNOON AND EARLY EVENING. THE GREATEST THUNDERSTORM
COVERAGE SHOULD EXIST ACROSS NRN MN WITH ISOLATED DEVELOPMENT
POSSIBLE ACROSS SE ND AND NE SD WHERE A CAPPING INVERSION WILL BE IN
PLACE. ALTHOUGH VERTICAL SHEAR PROFILES WILL NOT BE PARTICULARLY
STRONG...MODELS FORECAST ENOUGH INSTABILITY FOR A MARGINAL SEVERE
THREAT WEDNESDAY AFTERNOON. STEEP MID-LEVEL LAPSE RATES SHOWN ON
FORECAST SOUNDINGS MAY BE ENOUGH FOR HAIL AND UNIDIRECTIONAL
LOW-LEVEL FLOW PARALLEL TO THE BOUNDARY MAY SUPPORT STRONG GUSTY
WINDS WITH THE MORE ORGANIZED CELLS.

..CNTRL AND ERN TX/FAR NE LA...
THE LATEST WATER VAPOR IMAGERY SHOWS AN UPPER-LEVEL TROUGH LOCATED
ACROSS WEST TX AND THIS FEATURE IS FORECAST TO MOVE EWD ACROSS CNTRL
TX WEDNESDAY. ASCENT WITH THE TROUGH AND SFC HEATING SHOULD SUPPORT
THE DEVELOPMENT OF NUMEROUS THUNDERSTORMS DURING THE AFTERNOON. AT
THE SFC...A MOISTURE GRADIENT WILL REMAIN IN PLACE FROM DEL RIO TX
EXTENDING NEWD TO NEAR DALLAS WITH SFC DEWPOINTS IN THE LOWER 70S F
SEWD OF THIS LINE. IN ADDITION...A LOW-LEVEL JET IS FORECAST TO BE
LOCATED ACROSS CNTRL AND NE TX AND THIS FEATURE COMBINED WITH
LOW-LEVEL DIRECTIONAL SHEAR SHOWN ON FORECAST SOUNDINGS MAY SUPPORT
A MARGINAL SEVERE THREAT. A FEW MARGINALLY SEVERE WIND GUSTS MAY
OCCUR WHERE INSTABILITY BECOMES MAXIMIZED.

.BROYLES.. 09/04/2007

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KEWX [041659]: Preliminary Local Storm Report

NWUS54 KEWX 041659
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1159 AM CDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1110 AM FLOOD 3 ENE BRACKETTVILLE 29.33N 100.36W
09/04/2007 KINNEY TX LAW ENFORCEMENT

HIGHWAY FM694 AND FM334 WERE CLOSED FOR A TIME DUE TO
WATER OVER THE ROAD.

&&

$$

PM

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 041622
SWODY1
SPC AC 041620

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1120 AM CDT TUE SEP 04 2007

VALID 041630Z - 051200Z

..NO SVR TSTM AREAS FORECAST...

..ID/NV/UT...
MORNING SATELLITE IMAGERY SHOWS POWERFUL UPPER TROUGH DIGGING
SOUTHEASTWARD ACROSS ORE/NORTHERN CA. THIS SYSTEM WILL MOVE INTO NV
TONIGHT...WITH BAND OF MODERATELY STRONG MID LEVEL WINDS EXTENDING
ACROSS NV/UT AND INTO SOUTHERN ID BY EVENING. VISIBLY IMAGERY AND
RADAR SHOW WIDESPREAD CLOUDS AND SHOWERS THIS MORNING FROM NORTHEAST
NV INTO EASTERN ID. THIS WILL LIMIT DIABATIC HEATING THROUGH MUCH
OF THE DAY. HOWEVER...MID LEVEL DRYING IS INDICATED BY WATER VAPOR
IMAGERY OVER NORTHEAST NV. THIS DRYING WILL LIKELY SPREAD EASTWARD
BY LATE AFTERNOON AND HELP TO DIMINISH CLOUD COVER OVER PARTS OF THE
REGION. THOSE AREAS WHERE HEATING CAN OCCUR WILL BECOME AT LEAST
MARGINALLY UNSTABLE WITH STEEP LOW LEVEL LAPSE RATES AND RATHER
LARGE SURFACE T-TD SPREADS. SCATTERED AFTERNOON THUNDERSTORMS MAY
DEVELOP OVER PARTS OF NORTHERN NV/UT INTO EASTERN ID WITH A RISK OF
GUSTY WINDS AND HAIL. TIMING OF UPPER SYSTEM...MORNING CLOUDS...AND
LACK OF STRONG INSTABILITY SUGGEST THAT SEVERE THREAT WILL REMAIN
LIMITED IN COVERAGE AND INTENSITY. THUS WILL MAINTAIN ONLY LOW
SEVERE PROBABILITIES AT THIS TIME.

..EASTERN ORE...
RELATIVELY CLEAR SKIES ARE EVIDENT THIS MORNING OVER EASTERN ORE.
UPPER LOW IS FORECAST TO MOVE INTO THIS AREA BY AFTERNOON...
RESULTING IN STEEPENING MID LEVEL LAPSE RATES AND UPWARD FORCING FOR
VERTICAL MOTION. SCATTERED THUNDERSTORMS ARE LIKELY TO DEVELOP BY
MID-LATE AFTERNOON. FORECAST SOUNDINGS SUGGEST THE POTENTIAL FOR
PULSE STORMS CAPABLE OF HAIL AND GUSTY WINDS. THREAT SHOULD
DIMINISH QUICKLY AFTER SUNSET.

.HART/GUYER.. 09/04/2007

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KABR [041603]: Preliminary Local Storm Report

NWUS53 KABR 041603
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1102 AM CDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0600 PM HAIL FORT PIERRE 44.36N 100.38W
09/01/2007 E0.88 INCH STANLEY SD EMERGENCY MNGR

ALSO REPORT OF A CAMPER TIPPED OVER IN TOWN

&&

$$

ATG

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KMQT [041409]: Preliminary Local Storm Report

NWUS53 KMQT 041409
LSRMQT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
1009 AM EDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1008 AM HAIL 2 NE ONTONAGON 46.89N 89.28W
09/04/2007 E0.88 INCH ONTONAGON MI TRAINED SPOTTER

&&

$$

KFLEEGEL

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KMQT [041331]: Preliminary Local Storm Report

NWUS53 KMQT 041331
LSRMQT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
931 AM EDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0923 AM HAIL 5 W BARAGA 46.78N 88.60W
09/04/2007 E0.25 INCH BARAGA MI CO-OP OBSERVER

&&

$$

KFLEEGEL

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KEWX [041315]: Preliminary Local Storm Report

NWUS54 KEWX 041315
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
815 AM CDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0750 AM FLOOD EL INDIO 28.52N 100.32W
09/04/2007 MAVERICK TX LAW ENFORCEMENT

FM 1021 IS CLOSED, AS WELL AS OTHER ROADS, WHICH CAUSED
SEVRAL SCHOOLS TO BE CLOSED. REPORTS OF BETWEEN 5 TO 6
INCHES OF RAINFALL OVERNIGHT.

&&

$$

PM

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 041244
SWODY1
SPC AC 041241

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0741 AM CDT TUE SEP 04 2007

VALID 041300Z - 051200Z

..NO SVR TSTM AREAS FORECAST...

..NRN GREAT BASIN TODAY INTO EARLY TONIGHT...
A PRONOUNCED MID LEVEL SHORTWAVE TROUGH MOVING OVER THE PAC NW COAST
WILL CONTINUE PROGRESSING ESEWD TO NRN NV BY EARLY WEDNESDAY...WHILE
THE ACCOMPANYING BAROCLINIC ZONE DEVELOPS EWD FROM ORE/NRN CA ACROSS
NV/ID. DOWNSTREAM FROM THIS TROUGH...A LOW-MID LEVEL MOISTURE PLUME
/PW VALUES AOA 1 INCH/ WILL SPREAD NNEWD FROM ERN NV/WRN UT INTO SRN
ID. THIS MOISTURE...ALONG WITH SUFFICIENTLY STEEP LAPSE RATES AND
DAYTIME HEATING...WILL SUPPORT SCATTERED THUNDERSTORM DEVELOPMENT
TODAY FROM ERN NV/UT INTO S/SE ID. VERTICAL SHEAR WILL INCREASE
GRADUALLY DURING THE AFTERNOON OVER THIS AREA AS THE MID-UPPER
TROUGH APPROACHES FROM THE W...AND THE STRONGER STORMS MAY DEVELOP
SOME BOWING LINE SEGMENT OR SUPERCELL STRUCTURES WHICH WOULD LOCALLY
ENHANCE THE THREAT FOR DAMAGING WINDS AND MARGINALLY SEVERE HAIL.

FARTHER W...ADDITIONAL CONVECTION IS EXPECTED IN PROXIMITY TO THE
MID LEVEL TROUGH AND DEEP BAROCLINIC ZONE. THE MORE PROBABLE AREA
FOR DEVELOPMENT WILL BE ACROSS ERN ORE DURING THE LATE AFTERNOON AS
SURFACE HEATING COINCIDES WITH THE MID LEVEL THERMAL TROUGH TO
MAXIMIZE INSTABILITY. DEEP LAYER VERTICAL SHEAR MAY BE SUFFICIENT
FOR ORGANIZED STORM STRUCTURES ON THE CYCLONIC SIDE OF THE MID LEVEL
JET...THOUGH INSTABILITY WILL NOT BE PARTICULARLY STRONG AND THE
SEVERE STORM THREAT SHOULD REMAIN MARGINAL.

..UPPER MI AREA TODAY...
A BAND OF ELEVATED CONVECTION PERSISTS OVER UPPER MI AND NRN LOWER
MI THIS MORNING IN ASSOCIATION WITH LOW-LEVEL WAA/FRONTOGENESIS. A
NARROW BELT OF MOISTURE ALONG THE STALLED BAROCLINIC ZONE IS FEEDING
THIS CONVECTION...ALONG WITH THE REMNANTS OF AN ELEVATED MIXED LAYER
PLUME FROM THE NRN ROCKIES. INSTABILITY COULD BE SUFFICIENT FOR
MARGINALLY SEVERE HAIL...AND PERHAPS GUSTY OUTFLOW WINDS...WITH THE
STRONGER STORMS TODAY.

..SRN PLAINS/NW GULF COAST...
A BROAD/DEEP MOISTURE PLUME EXTENDS NWD FROM THE NW GULF COAST TO
OK/AR...TO THE E OF A MID LEVEL TROUGH OVER W TX. AN EMBEDDED
VORTICITY CENTER NEAR DRT WILL MOVE NNEWD AND HELP MAINTAIN A SWATH
OF WEAK CONVECTION/RAIN ACROSS CENTRAL TX...WHILE CLOUD BREAKS ALLOW
SUFFICIENT SURFACE HEATING FOR SCATTERED THUNDERSTORM DEVELOPMENT
FARTHER E DURING THE DAY ON THE PERIPHERY OF THE THICKER CLOUD
COVER.

.THOMPSON/GRAMS.. 09/04/2007

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KMQT [041232]: Preliminary Local Storm Report

NWUS53 KMQT 041232
LSRMQT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
832 AM EDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0810 AM HAIL CALUMET 47.25N 88.45W
09/04/2007 E0.75 INCH HOUGHTON MI PUBLIC

1/2 INCH TO 3/4 SIZE HAIL

&&

$$

PEARSON

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 040845
SWOD48
SPC AC 040844

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0344 AM CDT TUE SEP 04 2007

VALID 071200Z - 121200Z

..DISCUSSION...
PREDICTABILITY AMONG THE MEDIUM RANGE MODELS BEGINS TO DIMINISH
AFTER THURSDAY. THERE ARE INDICATIONS THAT THE INITIAL STRONG
MID-LEVEL IMPULSE MOVING OUT OF THE PLAINS AND INTO SERN CANADA WILL
BE FOLLOWED BY SEVERAL MORE WAVES. THIS WILL PROBABLY REINFORCE A
BROAD TROUGH ACROSS THE NRN HALF OF THE COUNTRY INTO NEXT
WEEKEND...BUT THE TIMING/AMPLITUDE OF SUCH FEATURES IS UNCERTAIN.
INITIAL SURGE OF CP AIR MASS WILL REACH THE MIDWEST AND CNTRL PLAINS
ON THURSDAY. TAIL-END OF THIS FRONT WILL LIKELY REDEVELOP NWD LATER
IN THE WEEK/WEEKEND AS JET ENERGY DIGS SEWD...BUT GIVEN TIMING
UNCERTAINTY OF EACH WAVE...DETERMINATION OF A REGIONAL SVR WX RISK
IS NOT JUSTIFIED AT THIS POINT.

.RACY.. 09/04/2007

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 040730
SWODY3
SPC AC 040729

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0229 AM CDT TUE SEP 04 2007

VALID 061200Z - 071200Z

..THERE IS A SLGT RISK OF SVR TSTMS ACROSS PORTIONS OF THE
CNTRL/NRN PLAINS...

..CNTRL/NRN PLAINS...
00Z ECMWF/NAM/GFS SUGGEST THAT MID-LEVEL WAVE MOVING INTO THE CNTRL
ROCKIES LATE ON WEDNESDAY WILL EJECT ENEWD AS A STRONGER ENTITY
TOWARD THE CNTRL/NRN PLAINS ON THURSDAY THAN PREVIOUSLY THOUGHT.
BASED ON CURRENT WATER VAPOR IMAGERY...THE STRONGER SOLUTIONS MAY
INDEED BE JUSTIFIED. SFC CYCLONE WILL LIKELY FORM AT THE
INTERSECTION OF A LEE-TROUGH AND W-E ORIENTED FRONT ACROSS CNTRL SD
EARLY THURSDAY...THEN DEVELOP NEWD ALONG THE FRONT DURING THE AFTN.

A NARROW PLUME OF RESIDUAL STEEP LAPSE RATES ALOFT WILL EXIST
IMMEDIATELY DOWNSTREAM FROM THE COLD FRONT/LEE TROUGH FROM CNTRL NEB
NEWD INTO NRN MN DURING THE AFTN...CONTRIBUTING TO MODEST
INSTABILITY. AS THE LARGER SCALE HEIGHT FALLS SPREAD EWD INTO THE
PLAINS...TSTMS WILL LIKELY FORM ALONG THE LEE TROUGH AND NEWD
ALONG/N OF THE FRONT THROUGH THURSDAY NIGHT. STRONGEST VERTICAL
SHEAR WILL EXIST IN THE COLDER AIR INITIALLY...BUT WILL IMPROVE WITH
TIME AS A 40-50 KT JET MAX ROUNDS THE BASE OF THE TROUGH TOWARD THE
WARM SECTOR THU NIGHT.

GIVEN THE STEEP LAPSE RATES...RATHER STRONG IMPULSE AND MODEST
INSTABILITY...THREAT FOR A FEW ORGANIZED SVR STORMS SEEMS PROBABLE.
ACTIVITY MAY EVOLVE INTO LINE SEGMENTS AND MOVE ENEWD FROM NEB AND
SD INTO PARTS OF WRN/NRN MN DURING THE EVENING. SRN EDGE OF THE
ACTIVITY MAY LINGER/DEVELOP EWD TOWARD THE MO RVR/ERN NEB OVERNIGHT
AS THE LOW-LEVEL FLOW RESPONDS TO THE MID-LEVEL JET MAX.

.RACY.. 09/04/2007

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 040557
SWODY2
SPC AC 040556

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1256 AM CDT TUE SEP 04 2007

VALID 051200Z - 061200Z

..THERE IS A SLGT RISK OF SVR TSTMS ACROSS PORTIONS OF THE NRN GRT
BASIN AND INTERMOUNTAIN W...

..NRN GRT BASIN/INTERMOUNTAIN W...
SPLIT FLOW IN THE WLYS WILL CONTINUE INTO MID-WEEK WITH THE PAC NW
TROUGH FCST TO DIG SEWD INTO THE NRN GRT BASIN BY WEDNESDAY AFTN.
THIS FEATURE WILL LIKELY BE PRECEDED BY A LEAD IMPULSE THAT WILL BE
IMPETUS FOR TUE NIGHT/EARLY WEDNESDAY CONVECTION OVER THE REGION.
THIS ACTIVITY SHOULD MOVE NEWD WEDNESDAY MORNING AS THE PRIMARY WARM
CONVEYOR SHIFTS EWD. IN ITS WAKE...AIR MASS WILL LIKELY RECOVER
WITH MODEST HEATING ALONG/AHEAD OF THE H7 FRONT FROM ERN ID SWD INTO
NRN/CNTRL UT. COMBINATION OF MID-LEVEL COLD AIR SPREADING EWD WITH
THE TROUGH ATOP THIS MOIST/WARM BOUNDARY LAYER WILL LIKELY
CONTRIBUTE TO AFTN DESTABILIZATION AND SUBSEQUENT TSTM DEVELOPMENT
AHEAD OF THE FRONT. ROUGHLY 45-50 KTS OF SWLY H5 FLOW ATOP SLY
LOW-LEVEL FLOW WILL BOOST BULK SHEAR SUFFICIENT FOR BRIEF SUPERCELL
STRUCTURES WITH HAIL. OTHERWISE...THE MAJORITY OF THE ACTIVITY WILL
LIKELY EVOLVE INTO LINE SEGMENTS WITH EMBEDDED BOWS/LEWPS FEATURING
DMGG WIND GUST POTENTIAL. ACTIVITY WILL MOVE QUICKLY ENEWD INTO WRN
WY WEDNESDAY EVENING WITH A GRADUAL DECREASE IN THE SVR THREATS.

..NRN MN WWD INTO THE DAKS...
A MID-LEVEL WAVE EMBEDDED WITHIN THE PRIMARY WLYS WILL SKIRT ACROSS
NWRN ONTARIO ON WEDNESDAY. A COLD FRONT WILL SETTLE SEWD BEHIND
THIS SYSTEM INTO PORTIONS OF NRN MN...SERN ND AND CNTRL SD BY 00Z
THU. PRE-FRONTAL WARM SECTOR IS EXPECTED TO BE CAPPED BY A STRONG
EML...ESPECIALLY WEST OF THE MISSOURI RVR. MODELS INDICATE A WEAK
PERTURBATION WITHIN THE SRN BRANCH MAY EJECT NEWD ACROSS THE DAKS
DURING PEAK HEATING. THIS MAY AID IN WEAKENING THE CAP SUFFICIENTLY
FOR LATE AFTN TSTM INITIATION FROM SERN ND/NERN SD INTO NRN MN ALONG
THE FRONT. GIVEN A STORM...500-1000 J/KG SBCAPES AND 30-35 KTS OF
WLY VERTICAL SHEAR MAY BE SUFFICIENT FOR ISOLD SVR HAIL/WIND GUSTS.
MORE ACTIVITY WILL DEVELOP LATER AT NIGHT UPSTREAM ACROSS THE HIGH
PLAINS AHEAD OF THE NRN INTERMOUNTAIN W TROUGH...GENERALLY ALONG/N
OF THE FRONT. THESE STORMS WILL LIKELY BE SUB-SEVERE OWING TO
COMPARATIVELY WEAKER POTENTIAL BUOYANCY.

..ERN TX NEWD INTO THE OZARKS...
CONSIDERABLE MODEL DIFFERENCES CONTINUE WITH THE HANDLING/STRENGTH
OF THE SRN PLAINS IMPULSE EXPECTED TO LIFT NEWD TUE AND WEDNESDAY.
A SURGE OF HIGH PRECIPITABLE WATER VALUES WILL CONTINUE ALONG/E OF
THIS TROUGH THROUGH MID-WEEK WITH CONSIDERABLE CONVECTION. VERTICAL
SHEAR SHOULD REMAIN WEAK AND LAPSE RATES POOR...THUS SUSTAINED
STRONG TSTMS ARE NOT LIKELY. IF LOW-LEVEL FLOW BECOMES STRONGER
THAN EXPECTED...THERE WOULD BE AN ISOLD TORNADO THREAT. POOR
PREDICTABILITY OF THE PATTERN...HOWEVER... WILL PRECLUDE AN
INTRODUCTION OF SVR PROBABILITIES ATTM.

.RACY.. 09/04/2007

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KHNX [040554]: Preliminary Local Storm Report

NWUS56 KHNX 040554
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
1054 PM PDT MON SEP 03 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0525 PM TSTM WND GST 1 E MOJAVE 35.05N 118.16W
09/03/2007 M83 MPH KERN CA OTHER FEDERAL

AT MOJAVE SPACEPORT WITH DATA FROM EDWARDS WEATHER SYSTEM
WIND TOWER

&&

$$

DUDLEY

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KMQT [040518]: Preliminary Local Storm Report

NWUS53 KMQT 040518
LSRMQT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
118 AM EDT TUE SEP 04 2007

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1245 AM TSTM WND DMG N WAKEFIELD 46.48N 89.93W
09/04/2007 GOGEBIC MI TRAINED SPOTTER

TOP HALF OF 8 TO 10 FEET TALL TREE KNOCKED OFF...4 INCH
DIAMETER BRANCHES ON A FEW VEHICLES ON STREET. BRIEF
POWER OUTAGE.

&&

$$

AJ

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 040503
SWODY1
SPC AC 040501

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1201 AM CDT TUE SEP 04 2007

VALID 041200Z - 051200Z

..NO SVR TSTM AREAS FORECAST...

..SYNOPSIS...
WHILE WEAK UPPER DISTURBANCES WILL CONTINUE TO AFFECT THE S CENTRAL
CONUS AND A LARGE-SCALE TROUGH WILL REMAIN OVER ERN CANADA AND NEW
ENGLAND...THE MAIN UPPER FEATURE WITH RESPECT TO THE THUNDERSTORM
FORECAST WILL BE THE TROUGH MOVING ACROSS THE PAC NW AND CA TOWARD
THE GREAT BASIN THROUGH THE FIRST HALF OF THE PERIOD.

A SURFACE BAROCLINIC ZONE ACCOMPANYING THIS WRN U.S. UPPER TROUGH
WILL ALSO MOVE ACROSS THE WEST...WHILE A MORE W-E FRONT PERSISTS
ACROSS THE N CENTRAL CONUS. ELSEWHERE...A LARGE HIGH WILL PREVAIL
OVER THE ERN THIRD OF THE CONUS THROUGH THE PERIOD.

..PORTIONS OF THE GREAT BASIN...
FLOW ALOFT IS FORECAST TO INCREASE FROM THE SW ACROSS THE GREAT
BASIN...AS UPPER JET SPREADS EWD ACROSS THIS REGION AHEAD OF
ADVANCING UPPER TROUGH. THOUGH INSTABILITY IS FORECAST TO REMAIN
MARGINAL /AOB 500 J/KG MIXED-LAYER CAPE FOR THE MOST PART/...DEGREE
OF SHEAR SUGGESTS THAT STORMS WHICH DO INITIATE IN ADVANCE OF THE
UPPER TROUGH/COLD FRONT MAY EXHIBIT SOME ORGANIZATION. THUS...WILL
MAINTAIN 5% PROBABILITY FOR ISOLATED DAMAGING WIND GUSTS OR MARGINAL
HAIL.

.GOSS/GRAMS.. 09/04/2007

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