KFGZ [050357]: Preliminary Local Storm Report

NWUS55 KFGZ 050357
LSRFGZ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
856 PM MST SAT AUG 04 2007

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

0735 PM FLOOD ST. JOHNS 34.51N 109.38W
08/04/2007 APACHE AZ LAW ENFORCEMENT

WATER 1-2 FEET DEEP AT 24W AND 15N STREETS.

0345 PM FLASH FLOOD DILKON 35.38N 110.32W
08/04/2007 NAVAJO AZ LAW ENFORCEMENT

FLASH FLOODING ALONG NAVAJO ROUTE 15 NEAR MP 69.

0545 PM FLOOD WHITE CONE 35.61N 110.07W
08/04/2007 NAVAJO AZ LAW ENFORCEMENT

WATER ACROSS INDIAN ROUTE 6 BETWEEN WHITE CONE AND INDIAN
WELLS AT MP 22. TIME OF EVENT UNKNOWN.

&&

$$

DB

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KFSD [050330]: Preliminary Local Storm Report

NWUS53 KFSD 050330
LSRFSD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1029 PM CDT SAT AUG 04 2007

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

1015 PM FLASH FLOOD STORM LAKE 42.65N 95.20W
08/04/2007 BUENA VISTA IA TRAINED SPOTTER

URBAN FLOODING OF STREETS REPORTED IN CITY OF STORM LAKE.
SPECIFICALLY LAKE AVENUE BETWEEN 9TH AND 10TH STREET
COVERED WITH WATER.

&&

$$

DMORIN

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KTWC [050256]: Preliminary Local Storm Report

NWUS55 KTWC 050256
LSRTWC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON AZ
756 PM MST SAT AUG 04 2007

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

0200 PM FLASH FLOOD 8 N TUCSON 32.35N 110.94W
08/04/2007 PIMA AZ BROADCAST MEDIA

*** 1 FATAL *** LARGE WALL OF WATER DOWN SABINO
CANYON...22 PEOPLE WERE STRANDED ON HIGHER GROUND...1
DEATH...1 MISSING.

&&

$$

WJM

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WATCHES: Severe Thunderstorm Watch - Number 562

WWUS20 KWNS 050255
SEL2
SPC WW 050255
IAZ000-NEZ000-SDZ000-050400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 562
NWS STORM PREDICTION CENTER NORMAN OK
955 PM CDT SAT AUG 4 2007

THE NWS STORM PREDICTION CENTER HAS CANCELLED
SEVERE THUNDERSTORM WATCH NUMBER 562 ISSUED AT 355 PM CDT FOR PORTIONS OF

IOWA
NEBRASKA
SOUTH DAKOTA

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WATCHES: Severe Thunderstorm Watch - Number 563

WWUS20 KWNS 050237
SEL3
SPC WW 050237
NEZ000-050400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 563
NWS STORM PREDICTION CENTER NORMAN OK
937 PM CDT SAT AUG 4 2007

THE NWS STORM PREDICTION CENTER HAS CANCELLED
SEVERE THUNDERSTORM WATCH NUMBER 563 ISSUED AT 545 PM CDT FOR PORTIONS OF

NEBRASKA

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MESO: Mesoscale Discussion 1650

ACUS11 KWNS 050222
SWOMCD
SPC MCD 050222
IAZ000-050315-

MESOSCALE DISCUSSION 1650
NWS STORM PREDICTION CENTER NORMAN OK
0922 PM CDT SAT AUG 04 2007

AREAS AFFECTED...PORTIONS OF WRN AND CENTRAL IA

CONCERNING...TORNADO WATCH 564...

VALID 050222Z - 050315Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 564 CONTINUES.

SURFACE LOW WAS LOCATED IN EXTREME SERN SD...WITH A WARM FRONT
STRETCHING SEWD ACROSS IA...FROM NORTH OF SUX TO NEAR OTM. A BAND OF
STRONG STORMS WERE LOCATED EAST OF THE LOW AND NEAR THE WARM FRONT
EAST OF SUX TO FOD. ALTHOUGH THE LOW/MID LEVEL SHEAR REMAINS
FAVORABLE FOR SUPERCELLS AND POSSIBLY EVEN A TORNADO...BOUNDARY
LAYER COOLING HAS RESULTED IN THE STORMS TO BE SLIGHTLY DECOUPLED
FROM THE BOUNDARY LAYER. A LOW THREAT OF SEVERE STORMS WILL EXIST
WITH ANY STORMS THAT DEVELOP IN THE STRONGLY SHEARED ENVIRONMENT...
THOUGH THE THREAT WILL BE LOW UNLESS A STORM IS ABLE TO TAP INTO THE
MOIST BOUNDARY LAYER.

.IMY.. 08/05/2007

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

ATTN...WFO...DMX...FSD...OAX...

41479242 41459504 42819611 42969599 43259459 42439337

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MESO: Mesoscale Discussion 1649

ACUS11 KWNS 050207
SWOMCD
SPC MCD 050207
IAZ000-NEZ000-SDZ000-050300-

MESOSCALE DISCUSSION 1649
NWS STORM PREDICTION CENTER NORMAN OK
0907 PM CDT SAT AUG 04 2007

AREAS AFFECTED...CENTRAL/ERN NEB AND EXTREME WRN IA

CONCERNING...SEVERE THUNDERSTORM WATCH 562...563...

VALID 050207Z - 050300Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
562...563...CONTINUES.

A SURFACE LOW WAS LOCATED IN EXTREME SERN SD...WITH A COLD FRONT
EXTENDING SWWD INTO CENTRAL/WRN NEB. THUNDERSTORMS WERE LOCATED
ALONG THE FRONT FROM NEAR SUX TO BBW. THE STORMS HAD WEAKENED DURING
THE PAST HOUR OR SO AS THE BOUNDARY LAYER HAS GRADUALLY
COOLED/STABILIZED. ALTHOUGH STORMS ARE EXPECTED TO CONTINUE SLOWLY
WEAKENING...ISOLATED STORMS WITH MARGINALLY SEVERE HAIL/WIND DAMAGE
WILL BE POSSIBLE FOR THE NEXT HOUR OR SO.

.IMY.. 08/05/2007

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

ATTN...WFO...DMX...FSD...OAX...GID...LBF...

40650112 41549972 42009826 42399714 42509646 42329594
41909561 41209537 41129714 40289997

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KOAX [050115]: Preliminary Local Storm Report

NWUS53 KOAX 050115
LSROAX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
815 PM CDT SAT AUG 04 2007

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

0750 PM HAIL 2 SE OAKDALE 42.05N 97.94W
08/04/2007 E0.75 INCH ANTELOPE NE PUBLIC

&&

$$

DEWALD

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KABQ [050051]: Preliminary Local Storm Report

NWUS55 KABQ 050051
LSRABQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
651 PM MDT SAT AUG 04 2007

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

0637 PM FLASH FLOOD ZUNI PUEBLO 35.07N 108.85W
08/04/2007 MCKINLEY NM FIRE DEPT/RESCUE

1 TO 2 FT OF WATER REPORTED IN FOUR HOMES.

&&

$$

SHY

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 050048
SWODY1
SPC AC 050045

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0745 PM CDT SAT AUG 04 2007

VALID 050100Z - 051200Z

..THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF ERN
NEB...EXTREME SERN SD...IA...AND EXTREME SRN MN...

..CNTRL PLAINS TO MIDWEST...
TYPICALLY HOT AND VERY UNSTABLE AIR MASS COVERS MUCH OF THE PLAINS
THIS EVENING BENEATH GENERALLY WEAK TO MODEST WLY FLOW ALOFT. A
SURFACE LOW WAS LOCATED OVER NWRN IA WITH A TROUGH/WIND SHIFT
BOUNDARY EXTENDING SWWD FROM THE SURFACE LOW ACROSS NEB...NWRN
KS...AND INTO SERN CO. A WELL-DEFINED WARM/STATIONARY BOUNDARY
EXTENDS SEWD FROM THE LOW IN IA ACROSS THE MS VALLEY TO IL...AND
THEN TO THE LOWER OH VALLEY. DESPITE WARM THERMODYNAMIC PROFILES
/MID LEVEL LAPSE RATES AOB 7 C PER KM/...PERSISTENT AND DEEPENING
BOUNDARY LAYER CONVERGENCE NEAR THE VARIOUS WIND SHIFT BOUNDARIES
AND FRONTS...AND NEAR THE SURFACE LOW...HAS ALLOWED SCATTERED
INTENSE TSTM DEVELOPMENT TO OCCUR. EFFECTIVE BULK SHEAR ACROSS MUCH
OF THE PLAINS WAS WITHIN A MARGINALLY FAVORABLE RANGE /25-35KT/ TO
SUSTAIN UPDRAFT ROTATION. PRONOUNCED 0-1KM SRH OF OVER 300
M2/S2...AND A LOWER LFC...EXIST INVOF SFC LOW AND ALONG THE WARM
FRONT OVER IA. ACTIVITY WEST OF THE MO RIVER VALLEY SHOULD CONTINUE
TO POSE A THREAT OF WIDELY SCATTERED SEVERE HAIL AND DAMAGING WINDS
BUT LACK OF STRONGER LARGE SCALE FORCING MAY LEAD TO A GRADUAL
DEMISE OF STORM INTENSITY WITHIN A FEW HOURS AFTER DARK TONIGHT.

EAST OF THE MO RIVER...ACROSS IA...A FEW SUPERCELL STORMS WITH
POTENTIAL FOR STRONG LOW LEVEL ROTATION MAY CONTINUE TO EVOLVE. ANY
CELL NEAR THE SURFACE LOW...OR TRACKING NEAR/ALONG THE WARM FRONTAL
ZONE...WILL HAVE TORNADIC POTENTIAL...IN ADDITION TO SEVERE HAIL AND
WIND...GIVEN THE COMBINATION OF SHEAR AND HIGH BOUNDARY LAYER RH.
EVENTUALLY...THIS CONVECTION MAY CONGEAL INTO AN MCS WHICH WILL
MAINTAIN THE CHANCE FOR ISOLATED STRONG...AND INCREASINGLY ELEVATED
TSTMS...FROM NERN IA ACROSS SERN MN AND INTO SRN WI THROUGH EARLY
SUNDAY MORNING. ISOLATED HAIL AND PERHAPS DAMAGING WINDS MIGHT OCCUR
IF THE MCS CAN PERSIST AND SPREAD EAST.

FARTHER SOUTHEAST...CLUSTERS OF INTENSE MULTICELL STORMS ARE
CONTINUING WITHIN STRONGLY UNSTABLE REGIME ALONG THE STATIONARY
BOUNDARY ACROSS SRN IL/IND. COLD POOL FROM ONGOING CONVECTION WILL
LIKELY MAINTAIN THERMAL CONTRAST ACROSS THE FRONTAL ZONE TONIGHT.
LIFT MAY STRENGTHEN ACROSS THIS BOUNDARY AS LOW LEVEL JET VEERS AND
INTENSIFIES OVERNIGHT WITH THE CHANCE FOR ISOLATED STRONG STORMS
CONTINUING OVER PARTS OF THE MIDWEST...ON THE EDGE OF THE STRONGER
CAP...THROUGH LATE NIGHT/EARLY SUNDAY.

..NRN ROCKIES INTO HIGH PLAINS...
LOW AMPLITUDE MID LEVEL IMPULSE EMANATING FROM LARGER SCALE BROAD
TROUGH ACROSS THE ERN PACIFIC/NORTHWEST...COUPLED WITH OROGRAPHIC
FORCING AND WEAK DESTABILIZATION...APPEARS TO HAVE SPURRED
HIGH-BASED AND FAST MOVING STORMS FROM ERN ID TO WY/MT THIS EVENING.
IN ADDITION...STRONG HEATING WITHIN LEE/THERMAL TROUGH ACROSS THE
WRN DAKOTAS HAS RESULTED IN ISOLATED STORM INITIATION IN THIS
REGION. GIVEN LARGE DIURNAL/DIABATIC COMPONENT TO THIS ONGOING
CONVECTION...EXPECT ANY SEVERE WIND POTENTIAL FROM THIS ACTIVITY TO
DECREASE OVER THE NEXT COUPLE OF HOURS.

.CARBIN.. 08/05/2007

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WATCHES: Tornado Watch Number 564

WWUS20 KWNS 050040
SEL4
SPC WW 050040
IAZ000-050400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 564
NWS STORM PREDICTION CENTER NORMAN OK
740 PM CDT SAT AUG 4 2007

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

NORTHWEST INTO CENTRAL IOWA

EFFECTIVE THIS SATURDAY EVENING FROM 740 PM UNTIL 1100 PM CDT.

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

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 10 MILES NORTH OF STORM LAKE
IOWA TO 15 MILES EAST SOUTHEAST OF DES MOINES IOWA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU4).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

OTHER WATCH INFORMATION...CONTINUE...WW 562...WW 563...

DISCUSSION...THUNDERSTORMS INCREASING OVER NWRN IA EARLY THIS
EVENING INVOF SURFACE LOW. SHEAR REMAINS QUITE STRONG ACROSS THIS
REGION... ESPECIALLY SEWD ALONG WARM FRONT INTO CENTRAL IA. GIVEN
PERSISTENT MODERATE TO STRONG INSTABILITY...STORMS SHOULD CONTINUE
MOVING SSEWD IN THE FORM OR DISCRETE SUPERCELLS THIS EVENING.
ENHANCED LOW LEVEL SHEAR AND VERY MOIST BOUNDARY LAYER WILL SUPPORT
A RISK OF TORNADOES INTO THIS AREA.

AVIATION...TORNADOES AND 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
500. MEAN STORM MOTION VECTOR 32020.

..EVANS

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KLBF [050036]: Preliminary Local Storm Report

NWUS53 KLBF 050036
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
736 PM CDT SAT AUG 04 2007

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

0727 PM TSTM WND GST 5 SW ANSELMO 41.57N 99.93W
08/04/2007 E60.00 MPH CUSTER NE PUBLIC

PEA SIZED HAIL ACCOMPANIED THE 60 MPH WIND.

&&

$$

BTAYLOR

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KGSP [050023]: Preliminary Local Storm Report

NWUS52 KGSP 050023
LSRGSP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
822 PM EDT SAT AUG 04 2007

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

0730 PM HAIL 2 SSW LONGVIEW 35.70N 81.40W
08/04/2007 E0.75 INCH CATAWBA NC PUBLIC

&&

$$

MCAVOY

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KRIW [050009]: Preliminary Local Storm Report

NWUS55 KRIW 050009
LSRRIW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
609 PM MDT SAT AUG 04 2007

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

0406 PM TSTM WND DMG NORRIS JCT 44.73N 110.70W
08/04/2007 PARK WY PARK/FOREST SRVC

TREES DOWNED. POWER OUT IN AREA.

0406 PM TSTM WND DMG 2 N GRANT VILLAGE 44.42N 110.56W
08/04/2007 TETON WY PARK/FOREST SRVC

REPORT OF TREES DOWN TOWARD WEST THUMB.

0407 PM TSTM WND DMG 1 SE CANYON 44.72N 110.48W
08/04/2007 PARK WY PARK/FOREST SRVC

LARGE TREE DOWN ACROSS NORTH RIM DRIVE

0420 PM NON-TSTM WND DMG NORTHEAST ENTRANCE 44.98N 110.06W
08/04/2007 PARK WY PARK/FOREST SRVC

6 TREES DOWN

&&

$$

DSB

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KBYZ [042349]: Preliminary Local Storm Report

NWUS55 KBYZ 042349
LSRBYZ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
549 PM MDT SAT AUG 04 2007

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

0520 PM TSTM WND GST 1 NE PARK CITY 45.64N 108.90W
08/04/2007 E60 MPH STILLWATER MT CO-OP OBSERVER

&&

$$

SOLUM

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KBYZ [042349]: Preliminary Local Storm Report

NWUS55 KBYZ 042349
LSRBYZ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
549 PM MDT SAT AUG 04 2007

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

0450 PM TSTM WND GST 4 S RAPELJE 45.91N 109.27W
08/04/2007 M65 MPH STILLWATER MT CO-OP OBSERVER

&&

$$

HOOLEY

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KMRX [042336]: Preliminary Local Storm Report

NWUS54 KMRX 042336
LSRMRX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
735 PM EDT SAT AUG 04 2007

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

0600 PM TSTM WND DMG ROSEDALE 36.17N 84.35W
08/03/2007 ANDERSON TN LAW ENFORCEMENT

TWO TREES DOWN NEAR ROSEDALE. REPORTED BY DISPATCH.

0600 PM HAIL ROSEDALE 36.17N 84.35W
08/03/2007 E0.88 INCH ANDERSON TN LAW ENFORCEMENT

NICKLE SIZE HAIL NEAR ROSEDALE. REPORTED BY DISPATCH.

0630 PM TSTM WND DMG 5 SW HAYESVILLE 35.00N 83.88W
08/03/2007 CLAY NC LAW ENFORCEMENT

1 TREE DOWN AT PINE LOG/5 MILES SOUTHWEST OF HAYESVILLE.
REPORTED BY DISPATCH.

&&

$$

GRC

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KGLD [042322]: Preliminary Local Storm Report

NWUS53 KGLD 042322
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
522 PM MDT SAT AUG 04 2007

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

0510 PM HAIL 4 SE BEARDSLEY 39.77N 101.18W
08/04/2007 E0.75 INCH RAWLINS KS PUBLIC

ESTIMATED 50 MPH WIND GUSTS AS WELL.

&&

$$

JDK

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KLBF [042314]: Preliminary Local Storm Report

NWUS53 KLBF 042314
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
613 PM CDT SAT AUG 04 2007

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

0540 PM HAIL 7 WNW ALMERIA 41.87N 99.67W
08/04/2007 E1.00 INCH LOUP NE PUBLIC

&&

$$

BHIRSCH

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MESO: Mesoscale Discussion 1648

ACUS11 KWNS 042309
SWOMCD
SPC MCD 042309
MOZ000-IAZ000-NEZ000-SDZ000-050015-

MESOSCALE DISCUSSION 1648
NWS STORM PREDICTION CENTER NORMAN OK
0609 PM CDT SAT AUG 04 2007

AREAS AFFECTED...IA AND ERN NEB

CONCERNING...SEVERE THUNDERSTORM WATCH 562...

VALID 042309Z - 050015Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 562
CONTINUES.

THUNDERSTORMS ARE EXPECTED TO DEVELOP SHORTLY ACROSS THE WW AREA
SHORTLY...ESPECIALLY ACROSS NERN NEB/NWRN IA...WHERE SURFACE LOW
PRESSURE WAS LOCATED. DESPITE WARM TEMPERATURES ALOFT...STRONG
INSTABILITY/SHEAR WILL BE FAVORABLE FOR RAPID DEVELOPMENT OF
SUPERCELLS. SEVERE HAIL AND DAMAGING WINDS WILL BE THE MAIN THREAT.

HOWEVER...VERY STRONG LOW LEVEL SHEAR WAS PRESENT ALONG A WARM FRONT
THAT STRETCHED NW-SE ACROSS IA FROM NEAR SPW TO OTM. IF STORMS CAN
DEVELOP AND BE CO-LOCATED NEAR THIS WARM FRONT...THE STORMS WOULD
MOVE ESEWD AND ENCOUNTER 25-30 KT 1 KM SHEAR AND 3KM SRH AROUND 300
M2/S2. THE MAIN QUESTION IS WHETHER STORMS WILL BE ABLE TO DEVELOP
DUE TO A STRONG CAPPING INVERSION. HOWEVER...IF STORMS FORM NEAR THE
WARM FRONT...PORTIONS OF THE SEVERE THUNDERSTORM WATCH...MAINLY
PORTIONS OF IA...MAY NEED AN UPGRADE TO A TORNADO WATCH.

.IMY.. 08/04/2007

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

ATTN...WFO...DVN...DMX...EAX...FSD...OAX...LBF...

40579629 42759850 43129459 40499168

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KUNR [042248]: Preliminary Local Storm Report

NWUS53 KUNR 042248
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
448 PM MDT SAT AUG 04 2007

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

0410 PM HAIL 2 N PRINGLE 43.64N 103.59W
08/04/2007 E1.00 INCH CUSTER SD PUBLIC

&&

$$

WETENKAMP

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WATCHES: Severe Thunderstorm Watch Number 563

WWUS20 KWNS 042245
SEL3
SPC WW 042245
NEZ000-050400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 563
NWS STORM PREDICTION CENTER NORMAN OK
545 PM CDT SAT AUG 4 2007

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

CENTRAL NEBRASKA

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 545 PM UNTIL
1100 PM CDT.

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 50
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES SOUTH
SOUTHWEST OF NORTH PLATTE NEBRASKA TO 55 MILES EAST OF BURWELL
NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

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.

OTHER WATCH INFORMATION...CONTINUE...WW 562...

DISCUSSION...INTENSE THUNDERSTORMS EXPECTED TO CONTINUE/DEVELOP
INVOF SURFACE COLD FRONT SAGGING SWD INTO CENTRAL NEB THIS EVENING.
AIR MASS IS VERY UNSTABLE AND MODERATELY SHEARED. DESPITE WARM AIR
ALOFT...DEGREE OF INSTABILITY...LOW LEVEL CONVERGENCE AND SUFFICIENT
SHEAR FOR ROTATING UPDRAFTS ALL FAVOR THREATS OF LARGE HAIL/DAMAGING
WINDS WITH THE STRONGER STORMS.

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 600. MEAN STORM
MOTION VECTOR 33015.

..EVANS

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KPIH [042229]: Preliminary Local Storm Report

NWUS55 KPIH 042229
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS ID
429 PM MDT SAT AUG 04 2007

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

0337 PM TSTM WND GST POCATELLO ARPT 42.92N 112.60W
08/04/2007 M65.00 MPH POWER ID ASOS

0352 PM TSTM WND DMG 1 NNW POCATELLO 42.90N 112.48W
08/04/2007 BANNOCK ID TRAINED SPOTTER

6 INCH LIMBS DOWN

0418 PM TSTM WND DMG 3 ENE POCATELLO 42.89N 112.41W
08/04/2007 BANNOCK ID TRAINED SPOTTER

POWER LINES DOWN, MULTIPLE FIRES, WIDESPREAD POWER OUTAGE
FROM AMERICAN FALLS AND UP THRU BINGHAM COUNTY.

&&

$$

MRIEDY

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KUNR [042223]: Preliminary Local Storm Report

NWUS53 KUNR 042223
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
422 PM MDT SAT AUG 04 2007

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

0410 PM HAIL PRINGLE 43.61N 103.59W
08/04/2007 E0.88 INCH CUSTER SD PUBLIC

&&

$$

WETENKAMP

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KTFX [042213]: Preliminary Local Storm Report

NWUS55 KTFX 042213
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
413 PM MDT SAT AUG 04 2007

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

0302 PM TSTM WND GST RED ROCK 44.90N 112.01W
08/04/2007 M59.00 MPH MADISON MT MESONET

RED ROCK RAWS

&&

$$

MPJ

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KBMX [042210]: Preliminary Local Storm Report

NWUS54 KBMX 042210
LSRBMX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
510 PM CDT SAT AUG 04 2007

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

0430 PM NON-TSTM WND GST 5 E BIRMINGHAM 33.53N 86.72W
08/04/2007 U0.00 MPH JEFFERSON AL TRAINED SPOTTER

A DUST DEVIL WAS REPORTED NEAR EASTWOOD MALL. IT HAD AN
ESTIMATED HEIGHT OF 250 FEET AND LAST SEVERAL MINUTES.

&&

$$

SUNGER

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MESO: Mesoscale Discussion 1647

ACUS11 KWNS 042206
SWOMCD
SPC MCD 042206
NEZ000-KSZ000-COZ000-050000-

MESOSCALE DISCUSSION 1647
NWS STORM PREDICTION CENTER NORMAN OK
0506 PM CDT SAT AUG 04 2007

AREAS AFFECTED...CENTRAL/SWRN NEB...FAR NWRN KS...NERN CO

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 042206Z - 050000Z

TSTMS ARE EXPECTED TO DEVELOP ALONG A SLOWLY MOVING BOUNDARY
ORIENTED NE-SW FROM CENTRAL/SWRN NEB INTO FAR NERN CO/NWRN KS IN THE
NEXT 1-2 HOURS. MODEST SHEAR AND INSTABILITY WILL SUPPORT AT LEAST
AN ISOLATED SVR THREAT. HOWEVER WW IS UNLIKELY.

VIS SAT IMAGERY SHOWS A LINE OF TCU EXTENDING FROM GARFIELD COUNTY
IN NCENTRAL NEB SWWD TO LBF TO NEAR GLD. THIS CONVECTION WAS LOCATED
ALONG A SLOW MOVING SFC TROUGH/WEAK COLD FRONTAL BOUNDARY. AIRMASS
OVER THE REGION AHEAD OF THE FRONT WAS MODERATELY UNSTABLE WITH
MLCAPE VALUES FROM 1500-2000 J/KG. PER REGIONAL PROFILER/VWP
DATA...VERTICAL SHEAR WAS ADEQUATE FOR SOME STORM
ROTATION/ORGANIZATION OVER NRN PORTIONS /CENTRAL NEB/ WHERE 30 KTS
OF MID LVL FLOW EXISTS. THUS ISOLATED LARGE HAIL AND DMGG WINDS WILL
BE POSSIBLE WITH ANY TSTMS ACROSS CENTRAL NEB. FURTHER SOUTH ACROSS
SWRN NEB/FAR NERN CO/NWRN KS...WEAKER MID LEVEL WINDS /AROUND 20
KTS/ WILL TEND TO LIMIT UPDRAFT ORGANIZATION. HOWEVER...30 DEG SFC
T/TD SPREAD COMBINED WITH THE INSTABILITY MAY SUPPORT ISOLATED DMGG
DOWNBURST WIND POTENTIAL.

.CROSBIE.. 08/04/2007

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

ATTN...WFO...OAX...GID...LBF...GLD...BOU...

42009858 42099932 41929993 41580086 41180154 40830202
40310228 39600231 39400222 39370170 39540119 39950057
40329979 40699926 41109881 41609824

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KTFX [042156]: Preliminary Local Storm Report

NWUS55 KTFX 042156
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
356 PM MDT SAT AUG 04 2007

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

0200 PM TSTM WND DMG 3 NW LIMA 44.67N 112.63W
08/04/2007 BEAVERHEAD MT PUBLIC

WINDS ESIMATED TO BE 70 MPH DESTROYED A LARGE WORK SHED
NEAR LIMA.

0200 PM TSTM WND GST 4 NE LIMA 44.68N 112.53W
08/04/2007 M57.00 MPH BEAVERHEAD MT MESONET

ANTELOPE RAWS

&&

$$

SAUCIER

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