KSLC [150128]: Preliminary Local Storm Report

NWUS55 KSLC 150128
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
726 PM MDT MON SEP 14 2009

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

0505 PM HAIL MORONI 39.53N 111.59W
09/14/2009 M0.75 INCH SANPETE UT TRAINED SPOTTER

0715 PM HAIL MOUNTAIN HOME 40.21N 110.75W
09/14/2009 M0.25 INCH DUCHESNE UT TRAINED SPOTTER

1000 PM NON-TSTM WND GST SNOWBASIN 41.19N 111.87W
09/13/2009 M69 MPH WEBER UT MESONET

SNOWBASIN-STRAW TOP - 8999 FT

0215 PM NON-TSTM WND GST SNOWBASIN 41.20N 111.88W
09/14/2009 M69 MPH WEBER UT MESONET

OGDEN PEAK - 9570 FT

0240 PM NON-TSTM WND GST DUGWAY 39.92N 112.94W
09/14/2009 M61 MPH TOOELE UT MESONET

SIMPSON SPRINGS - 4645 FT

0310 PM NON-TSTM WND GST DUGWAY 40.37N 113.00W
09/14/2009 M66 MPH TOOELE UT MESONET

UPPER CEDAR MTN - 7052 FT

1215 PM NON-TSTM WND GST DUGWAY 40.23N 112.73W
09/14/2009 M59 MPH TOOELE UT MESONET

ENGLISH VILLAGE - 4788 FT

1245 PM NON-TSTM WND GST VERNON 40.13N 112.38W
09/14/2009 M64 MPH TOOELE UT MESONET

VERNON HILL - 5761 FT

0355 PM NON-TSTM WND GST DUGWAY 40.30N 112.78W
09/14/2009 M60 MPH TOOELE UT MESONET

CEDAR MOUNTAIN - 4650 FT

0250 PM NON-TSTM WND GST DUGWAY 40.24N 113.09W
09/14/2009 M60 MPH TOOELE UT MESONET

PLAYA STATION - 4280 FT

&&

$$

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 150048
SWODY1
SPC AC 150045

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0745 PM CDT MON SEP 14 2009

VALID 150100Z - 151200Z

...NO SVR TSTM AREAS FORECAST...

...UT...

TSTMS HAVE WEAKENED OVER THE PAST COUPLE OF HOURS DUE TO GRADUAL
STABILIZATION OF AIR MASS. FORCING FOR ASCENT ASSOCIATED WITH SHORT
WAVE TROUGH ACTING ON RESIDUAL STEEP LAPSE RATES MAY SUSTAIN A FEW
STRONG STORMS THIS EVENING WITH THE POTENTIAL FOR GUSTY WINDS AND
SOME HAIL. HOWEVER...THREAT FOR MORE ORGANIZED SEVERE WEATHER
APPEARS TO HAVE DIMINISHED.

...CNTRL GULF COAST...

SURFACE LOW CURRENTLY W OF POE IS FORECAST TO MOVE LITTLE TONIGHT
WHILE ASSOCIATED SURFACE BOUNDARY REMAINS QUASI-STATIONARY...
EXTENDING NNEWD THROUGH ERN AR INTO THE MO BOOTHEEL. VORTICITY LOBE
ROTATING AROUND PARENT UPPER SYSTEM HAS CONTRIBUTED TO RECENT
INTENSIFICATION OF STORMS OVER SRN AND CNTRL PARTS OF MS. 00Z JAN
SOUNDING IS QUITE REPRESENTATIVE OF AMBIENT THERMODYNAMIC AND
KINEMATIC ENVIRONMENT...FEATURING MLCAPE OF AROUND 2000 J/KG AND 30
KT OF DEEP-LAYER SHEAR.

GIVEN THE MOIST...UNCAPPED AIR MASS...SAMPLED WIND PROFILE IS
MARGINALLY SUFFICIENT FOR WEAK SUPERCELL STRUCTURES WHICH HAVE BEEN
OBSERVED OVER THE PAST HOUR. AS SUCH...A LOW PROBABILITY THREAT FOR
A BRIEF TORNADO OR STRONG WIND GUST WILL EXIST OVERNIGHT.
HOWEVER...THE RATHER WEAK LOW-LEVEL SHEAR SHOULD LIMIT GREATER
SUPERCELL/TORNADO POTENTIAL.

..MEAD.. 09/15/2009

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WATCHES: Severe Thunderstorm Watch - Number 741

WWUS20 KWNS 150003
SEL1
SPC WW 150003
UTZ000-150000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 741
NWS STORM PREDICTION CENTER NORMAN OK
603 PM MDT MON SEP 14 2009

THE NWS STORM PREDICTION CENTER HAS CANCELLED
SEVERE THUNDERSTORM WATCH NUMBER 741 ISSUED AT 1120 AM MDT FOR PORTIONS OF

UTAH

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KTFX [142304]: Preliminary Local Storm Report

NWUS55 KTFX 142304
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
504 PM MDT MON SEP 14 2009

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

0315 PM HAIL 5 E WISDOM 45.62N 113.34W
09/14/2009 E0.25 INCH BEAVERHEAD MT OTHER FEDERAL

SOME LIGHT RAIN AND PEA SIZE HAIL.

&&

$$

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MESO: Mesoscale Discussion 2016

ACUS11 KWNS 142302
SWOMCD
SPC MCD 142302
UTZ000-150000-

MESOSCALE DISCUSSION 2016
NWS STORM PREDICTION CENTER NORMAN OK
0602 PM CDT MON SEP 14 2009

AREAS AFFECTED...UT

CONCERNING...SEVERE THUNDERSTORM WATCH 741...

VALID 142302Z - 150000Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 741
CONTINUES.

SVR TSTM WATCH 741 IS SET TO EXPIRE AT 00Z. LOCAL WFO EXTENSION OF
THE WW MAY BE POSSIBLE.

WATER VAPOR IMAGERY SHOWS A POTENT PV-ANOMALY ROTATING NEWD ACROSS
THE SALT FLATS/DESERTS OF NWRN UT AND IS AIDING IN THE RECENT
INTENSIFICATION OF TSTMS OVER THE GREAT SALT LAKE. THIS NARROW LINE
OF STRONG CONVECTION WILL TRANSLATE ENE ACROSS THE I-15 CORRIDOR AND
INTO THE NRN WASATCH FRONT/MOUNTAINS AND THE CACHE VLY THROUGH 00Z.
SOME WEAKENING IS LIKELY AS THE ACTIVITY BECOMES REMOVED FROM THE
SLIGHTLY STRONGER BUOYANCY NOTED INVOF THE GREAT SALT LAKE.
BUT...STRONG/SVR WINDS COULD OCCUR.

MEANWHILE...WARM CONVEYOR ASSOCD WITH THE NV UPR SYSTEM CONTINUES TO
SPREAD SLOWLY EWD ACROSS THE ERN UINTA BASIN...SAN RAFAEL SWELL AND
CNTRL MOUNTAINS. EMBEDDED WITHIN THIS ENHANCED SLY MID-LVL FLOW
WERE SEVERAL SUSTAINED ROTATING CELLS CAPABLE OF LARGE HAIL AND DMGG
WIND GUSTS. THIS ACTIVITY WILL PROBABLY WEAKEN GRADUALLY THROUGH
EARLY THIS EVE BEFORE REACHING THE CO/WY BORDERS AS THE PRIMARY
FORCING FOR ASCENT ROTATES NWD TOWARD WRN WY/ERN ID.

..RACY.. 09/14/2009

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

ATTN...WFO...SLC...

LAT...LON 38521323 40221255 41811322 41771134 40921121 40671030
39701019 38581042 37961065 37691118 37781306 38521323

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KPUB [142234]: Preliminary Local Storm Report

NWUS55 KPUB 142234
LSRPUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
434 PM MDT MON SEP 14 2009

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

0433 PM HAIL 6 NNE COLORADO SPRINGS 38.92N 104.77W
09/14/2009 M1.00 INCH EL PASO CO TRAINED SPOTTER

&&

$$

MN

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KPIH [142226]: Preliminary Local Storm Report

NWUS55 KPIH 142226
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
426 PM MDT MON SEP 14 2009

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

0410 PM TSTM WND GST 20 E HOWE 43.78N 112.60W
09/14/2009 M64 MPH JEFFERSON ID MESONET

SAND DUNES NOAA ARL FRD MESONET WIND 53 MPH GUSTING TO 64
MPH

&&

$$

VPRESTON

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KSLC [142223]: Preliminary Local Storm Report

NWUS55 KSLC 142223
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
423 PM MDT MON SEP 14 2009

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

0420 PM HAIL HUNTINGTON 39.33N 110.96W
09/14/2009 M1.00 INCH EMERY UT TRAINED SPOTTER

&&

$$

MCONGER

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KPUB [142216]: Preliminary Local Storm Report

NWUS55 KPUB 142216
LSRPUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
416 PM MDT MON SEP 14 2009

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

0410 PM HAIL 9 NNE COLORADO SPRINGS 38.95N 104.76W
09/14/2009 M0.75 INCH EL PASO CO TRAINED SPOTTER

&&

$$

MN

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KPIH [142209]: Preliminary Local Storm Report

NWUS55 KPIH 142209
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
409 PM MDT MON SEP 14 2009

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

0405 PM TSTM WND GST RIGBY 43.67N 111.92W
09/14/2009 M40 MPH JEFFERSON ID TRAINED SPOTTER

TRAINED SPOTTER NOTED SHELF CLOUD MOVING THROUGH RIGBY
WITH WIND GUSTS TO 40 MPH AND DUST REDUCING VISIBILITY TO
1 MILE.

&&

$$

VPRESTON

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KPIH [142204]: Preliminary Local Storm Report

NWUS55 KPIH 142204
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
404 PM MDT MON SEP 14 2009

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

0355 PM TSTM WND GST 20 W IDAHO FALLS 43.49N 112.43W
09/14/2009 M58 MPH BONNEVILLE ID MESONET

KETTLE BUTTE NOAA ARL FRD MESONET REPORTED GUSTS OVER 58
MPH

&&

$$

VPRESTON

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KPIH [142149]: Preliminary Local Storm Report

NWUS55 KPIH 142149
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
346 PM MDT MON SEP 14 2009

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

0315 PM TSTM WND GST TABER 43.32N 112.63W
09/14/2009 M60 MPH BINGHAM ID MESONET

WINDS MEASURED AT TABER ARL FRD SITE

&&

$$

JKEYES

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KGGW [142142]: Preliminary Local Storm Report

NWUS55 KGGW 142142
LSRGGW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
342 PM MDT MON SEP 14 2009

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

0830 PM HAIL 12 N LINDSAY 47.39N 105.15W
09/13/2009 E1.00 INCH DAWSON MT PUBLIC

HAIL DAMAGED HEADS ON WHEAT CROP.

&&

$$

AJZ

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KPIH [142140]: Preliminary Local Storm Report

NWUS55 KPIH 142140
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
340 PM MDT MON SEP 14 2009

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

0337 PM HEAVY RAIN 4 NW CHUBBUCK 42.96N 112.52W
09/14/2009 U0.00 INCH BANNOCK ID FIRE DEPT/RESCUE

WEST SIPHON ROAD AREA -STANDING WATER FROM HEAVY RAINS.

&&

$$

VPRESTON

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KCHS [142123]: Preliminary Local Storm Report

NWUS52 KCHS 142123
LSRCHS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
523 PM EDT MON SEP 14 2009

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

0454 PM HIGH ASTR TIDES CHARLESTON 32.78N 79.94W
09/14/2009 CHARLESTON SC PUBLIC

CHARLESTON PILOT BOAT OFFICE REPORTS SOME STANDING SALT
WATER IN THEIR PARKING LOT ON CONCORD STREET. NOS TIDE
GAGE IN CHARLESTON HARBOR REACHED 7.18 FT MLLW DURING THE
HIGH TIDE AT THIS TIME.

&&

$$

33

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KSLC [142118]: Preliminary Local Storm Report...corrected

NWUS55 KSLC 142118
LSRSLC

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
318 PM MDT MON SEP 14 2009

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

0200 PM TSTM WND DMG LAYTON 41.08N 111.96W
09/14/2009 DAVIS UT BROADCAST MEDIA

TREES BLOWN DOWN

&&

$$

MCONGER

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KPIH [142116]: Preliminary Local Storm Report

NWUS55 KPIH 142116
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
316 PM MDT MON SEP 14 2009

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

0314 PM TSTM WND GST 5 S TABER 43.25N 112.63W
09/14/2009 E40 MPH BINGHAM ID TRAINED SPOTTER

ESTIMATED WIND GUSTS BETWEEN 30 AND 40 MPH. POWER IS ALSO
OUT AS OF REPORT TIME AND HAD BEEN OUT FOR ABOUT 10
MINUTES.

&&

$$

JKEYES

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KSLC [142110]: Preliminary Local Storm Report

NWUS55 KSLC 142110
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
310 PM MDT MON SEP 14 2009

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

0115 PM TSTM WND DMG 6 NNW GRANTSVILLE 40.67N 112.51W
09/14/2009 TOOELE UT DEPT OF HIGHWAYS

SEMI-TRAILER BLOWN OVER AT MP 85 ON I-80

0115 PM TSTM WND DMG 2 E DELLE 40.77N 112.74W
09/14/2009 TOOELE UT DEPT OF HIGHWAYS

SEMI-TRAILER BLOWN OVER AT MP 72 ON I-80

0230 PM TSTM WND DMG LAYTON 41.08N 111.96W
09/14/2009 DAVIS UT BROADCAST MEDIA

TREES BLOWN DOWN

&&

$$

MCONGER

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KSHV [142108]: Preliminary Local Storm Report

NWUS54 KSHV 142108
LSRSHV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
408 PM CDT MON SEP 14 2009

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

0230 PM FLASH FLOOD 3 E WINNSBORO 32.96N 95.24W
09/14/2009 WOOD TX LAW ENFORCEMENT

A WATER RESCUE WAS CONDUCTED ALONG CR 4583 DUE TO A CAR
WASHED OFF THE ROAD.

&&

$$

18

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KSHV [142058]: Preliminary Local Storm Report

NWUS54 KSHV 142058
LSRSHV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
358 PM CDT MON SEP 14 2009

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

0340 PM FLASH FLOOD 10 NE JEFFERSON 32.86N 94.23W
09/14/2009 MARION TX LAW ENFORCEMENT

MARION SHERIFFS COUNTY REPORTS PART OF HWY 49 CLOSED DUE
TO HIGH WATER NEAR SMITHLAND.

&&

$$

18

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MESO: Mesoscale Discussion 2015

ACUS11 KWNS 142049
SWOMCD
SPC MCD 142048
UTZ000-WYZ000-142215-

MESOSCALE DISCUSSION 2015
NWS STORM PREDICTION CENTER NORMAN OK
0348 PM CDT MON SEP 14 2009

AREAS AFFECTED...UT

CONCERNING...SEVERE THUNDERSTORM WATCH 741...

VALID 142048Z - 142215Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 741
CONTINUES.

SEVERE TSTM WATCH 741 CONTINUES UNTIL 00Z...WITH A PERSISTENT RISK
OF SEVERE WINDS/HAIL ACROSS PORTIONS OF UT.

MULTIPLE NORTH-SOUTH ORIENTED CONVECTIVE CLUSTERS CONTINUE TO
PROGRESS EASTWARD TOWARD/ACROSS THE I-15 CORRIDOR IN UT AHEAD OF AN
EASTWARD PROGRESSING UPPER TROUGH OVER NV. DERIVED WIND PROFILE DATA
FROM REGIONAL WSR-88D/S REFLECT AN INCREASE IN DEEP LAYER/NEARLY
UNIDIRECTIONAL SOUTHERLY FLOW SINCE THIS MORNING...WHICH WILL
CONTINUE TO FAVOR QUASI-ORGANIZED/ENE MOVING CONVECTIVE LINES
CAPABLE OF SEVERE WIND GUSTS AND HAIL. THE SEVERE THREAT SHOULD
GRADUALLY WANE ACROSS NORTHERN UT AS STORMS MOVE INTO THE HIGHER
TERRAIN...WHILE A SEVERE THREAT WILL LIKELY CONTINUE OVER THE NEXT
FEW HOURS ACROSS PORTIONS OF CENTRAL/SOUTHERN UT IN AN ENVIRONMENT
CHARACTERIZED BY MUCAPE UP TO 1000 J/KG AND MODERATELY STRONG SHEAR.

..GUYER.. 09/14/2009

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

ATTN...WFO...GJT...SLC...

LAT...LON 41771272 41611118 40591013 38071005 37221111 37351289
37991361 39941372 40971343 41771272

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KMEG [142047]: Preliminary Local Storm Report

NWUS54 KMEG 142047
LSRMEG

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
347 PM CDT MON SEP 14 2009

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

0301 PM FLASH FLOOD CHARLESTON 34.01N 90.06W
09/14/2009 TALLAHATCHIE MS LAW ENFORCEMENT

ROADS NEARLY IMPASSABLE ON THE EAST SIDE OF TOWN IN THE
DEPOT SUBDIVISION...CARS AT A STAND STILL.

&&

$$

DSV

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 141946
SWODY1
SPC AC 141943

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0243 PM CDT MON SEP 14 2009

VALID 142000Z - 151200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER MUCH OF UT...

...UT...

THE CURRENT FORECAST APPEARS ON TRACK. STRONG TO SEVERE STORMS ARE
DEVELOPING ACROSS UT WITHIN ZONE OF DEEP LIFT AND UPPER DIVERGENCE
ATTENDING THE EWD MOVING SHORTWAVE TROUGH. COOL TEMPERATURES ALOFT
WITH -12 TO -13C AT 500 MB...STEEP LAPSE RATES...AND DEEPLY MIXED
BOUNDARY LAYERS ARE PROMOTING A RISK FOR ISOLATED LARGE HAIL AND
STRONG TO DAMAGING WIND GUSTS. SEVERE THREAT SHOULD DIMINISH EARLY
THIS EVENING AS THE BOUNDARY LAYER BEGINS TO STABILIZE.

...GULF COASTAL STATES...

EARLY THIS EVENING A FRONTAL BOUNDARY EXTENDS FROM THE NRN GULF OF
MEXICO NWWD TO A WEAK SURFACE LOW OVER THE LOWER MS VALLEY. LARGE
CLUSTER OF STORMS CONTINUE WITHIN PLUME OF DEEP SUBTROPICAL MOISTURE
FROM THE FL PANHANDLE NWD THROUGH AL. FARTHER WEST MORE ISOLATED
DEVELOPMENT IS OCCURING WITHIN DRY SLOT AND ZONE OF POSSIBLE UPPER
LEVEL SUBSIDENCE. IN BOTH THESE REGIONS CONSIDERABLE LOW LEVEL
VEERING EXISTS IN VICINITY OF THE FRONT...BUT LOW LEVEL AND DEEP
LAYER SHEAR REMAIN WEAK . STRONG DIABATIC HEATING HAS DESTABILIZED
THE BOUNDARY LAYER IN DRY SLOT REGION. HOWEVER...WEAK MID LEVEL
LAPSE RATES...WARM AIR ALOFT AND WEAK VERTICAL SHEAR WILL CONTINUE
TO BE A LIMITING FACTOR FOR A MORE ROBUSTS SEVERE THREAT.

..DIAL.. 09/14/2009

.PREV DISCUSSION... /ISSUED 1102 AM CDT MON SEP 14 2009/

...UT...
UPPER TROUGH HAS MOVED INLAND OVER CA THIS AM AND BY 12Z TUE
FORECASTED TO BE A CLOSED LOW CENTRAL UT. MOISTURE HAS SPREAD NEWD
AHEAD OF THE TROUGH THRU THE INTERMOUNTAIN REGION OVERNIGHT. THE
LARGE SCALE ASCENT AND COOL AIR ALOFT/STEEP LAPSE RATES/ WITH
APPROACHING TROUGH HAVE INITIATED THUNDERSTORMS VICINITY UT/NV
BORDER THIS AM. HEATING COMBINED WITH THE AVAILABLE MOISTURE...WILL
LEAD TO AN INCREASE IN INSTABILITY ACROSS MUCH OF UT BY MID
AFTERNOON WITH MLCAPES RANGING UPWARD FROM 500-1000 J/KG. WITH DEEP
LAYER SHEAR TO 30KT...SURFACE BASED STORMS WILL INCREASE DURING THE
AFTERNOON...POSSIBLY DEVELOP CLUSTERS AND SHORT LINES. WITH A
DEEPLY MIXED BOUNDARY LAYER...GUSTY WINDS...BRIEFLY SEVERE WILL
DEVELOP E AND NE ACROSS CENTRAL/UT THIS AFTERNOON. IN ADDITION HAIL
WILL BE LIKELY WITH STRONGEST UPDRAFTS GIVEN THE COOL AIR ALOFT AND
STEEP LAPSE RATES...THEREFORE HAVE INTRODUCED A LOW END SLIGHT RISK
FOR THIS AFTERNOON/EVENING.

...CENTRAL GULF COAST STATES...
A TROPICAL AIR MASS RESIDES ACROSS LOWER MS VALLEY IN ADVANCE OF THE
WEAK SURFACE/UPPER LOW CURRENTLY OVER ERN TX. SVR/TOR POTENTIAL AS
OVER THE WEEKEND WILL BE LIMITED BY THE RELATIVELY WEAKLY SHEARED
ENVIRONMENT. HOWEVER TODAY THERE WILL BE MORE HEATING EWD ACROSS LA
AND SRN MS...LEADING TO THE THREAT FOR DISCRETE STORM DEVELOPMENT
AND POSSIBLY WEAK ROTATION.

HAVE CONTINUED A MARGINAL RISK OF BRIEF TORNADOES AND WET MICRO
BURSTS...BUT WITH THE MARGINAL SHEAR...DO NOT EXPECT STORMS TO BE
ORGANIZED OR OF LONG DURATION.

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KGGW [141938]: Preliminary Local Storm Report

NWUS55 KGGW 141938
LSRGGW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
138 PM MDT MON SEP 14 2009

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

0530 PM HAIL CROW ROCK 46.91N 106.07W
09/13/2009 E1.00 INCH PRAIRIE MT PUBLIC

STORM PRODUCED QUARTER SIZE HAIL AND DAMAGED A PICK UP
TRUCK ON THE PROPERTY.

0910 PM HAIL 5 S LINDSAY 47.15N 105.15W
09/13/2009 E1.00 INCH DAWSON MT TRAINED SPOTTER

HAIL STONES CAUSED DENTS ON AN EXPOSED CAMPER. RAINFALL
WAS MEASURED AT 1.4 INCHES. RUN OFF FROM RAIN FILLED
DITCHES AND ALMOST FILLED A DAM ON THE PROPERTY.

0925 PM HAIL 7 N LINDSAY 47.32N 105.15W
09/13/2009 E1.50 INCH DAWSON MT AIRPLANE PILOT

NEARLY 2 INCHES OF RAIN MIXED WITH WALNUT SIZED
HAILSTONES AND SMALLER.

1000 PM HAIL 7 N LINDSAY 47.32N 105.15W
09/13/2009 E1.50 INCH DAWSON MT AIRPLANE PILOT

MIXTURE OF HAILSTONES WALNUT SIZED AND SMALLER.

1005 PM HAIL 8 NNE BLOOMFIELD 47.52N 104.85W
09/13/2009 E1.75 INCH DAWSON MT TRAINED SPOTTER

HAIL FELL FOR ABOUT 5 MINUTES. RAINFALL TOTALLED 0.30
INCHES.

&&

$$

ASCHNETZ

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KSLC [141910]: Preliminary Local Storm Report

NWUS55 KSLC 141910
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
110 PM MDT MON SEP 14 2009

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

1245 PM TSTM WND GST 4 NE VERNON 40.13N 112.39W
09/14/2009 M64.00 MPH TOOELE UT MESONET

VERNON HILL

&&

$$

GMERRILL

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KSHV [141910]: Preliminary Local Storm Report

NWUS54 KSHV 141910
LSRSHV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
209 PM CDT MON SEP 14 2009

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

0917 AM FLASH FLOOD GILMER 32.73N 94.95W
09/14/2009 UPSHUR TX AMATEUR RADIO

SEVERAL BUSINESSES ARE FLOODED ON MICHIEL ST BETWEEN
TITUS AND US 271 IN THE CITY OF GILMER.

&&

$$

18

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KSLC [141845]: Preliminary Local Storm Report

NWUS55 KSLC 141845
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1245 PM MDT MON SEP 14 2009

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

1015 AM TSTM WND GST WENDOVER 40.74N 114.02W
09/14/2009 M60 MPH TOOELE UT AWOS

1215 PM TSTM WND GST 1 ESE DUGWAY 40.23N 112.73W
09/14/2009 M59 MPH TOOELE UT MESONET

ENGLISH VILLAGE MESONET

&&

$$

GMERRILL

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KEWX [141843]: Preliminary Local Storm Report

NWUS54 KEWX 141843
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
143 PM CDT MON SEP 14 2009

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

0635 PM FLASH FLOOD 3 SSE ANDERSON MILL 30.42N 97.79W
09/12/2009 TRAVIS TX CITY OFFICIAL

CITY OFFICIALS INDICATE PORTIONS OF SPICEWOOD SPRINGS
ROAD REMAIN CLOSED DUE TO FLASH FLOODING.

&&

EVENT NUMBER EWX0900094

$$

PAY

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KEWX [141840]: Preliminary Local Storm Report

NWUS54 KEWX 141840
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
139 PM CDT MON SEP 14 2009

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

0542 PM FLASH FLOOD JARRELL 30.82N 97.60W
09/11/2009 WILLIAMSON TX LAW ENFORCEMENT

LOCAL LAW ENFORCEMENT INDICATE MANY ROADS ACROSS THE
JARRELL AREA REMAIN FLOODED.

&&

EVENT NUMBER EWX0900093

$$

PAY

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KEWX [141836]: Preliminary Local Storm Report

NWUS54 KEWX 141836
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
136 PM CDT MON SEP 14 2009

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

0900 PM FLASH FLOOD 4 S CAMP WOOD 29.62N 100.01W
09/09/2009 UVALDE TX EMERGENCY MNGR

THERE WERE INDICATIONS THAT A PORTION OF HIGHWAY 55
SOUTH OF CAMP WOOD HAD WATER OVER THE ROAD.

&&

EVENT NUMBER EWX0900092

$$

PAY

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KKEY [141818]: Preliminary Local Storm Report

NWUS52 KKEY 141818
LSRKEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
218 PM EDT MON SEP 14 2009

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

0155 PM WATER SPOUT 2 S KEY COLONY BEACH 24.69N 81.02W
09/14/2009 GMZ053 FL TRAINED SPOTTER

A TRAINED SPOTTER REPORTED 2 WATERSPOUTS 2 MILES SOUTH OF
KEY COLONY BEACH. THE WATERSPOUTS WERE OBSERVED ALL THE
WAY DOWN TO THE WATER BEFORE DISSIPATING SHORTLY AFTER.

&&

$$

WHOVORKA

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 141723
SWODY2
SPC AC 141721

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1221 PM CDT MON SEP 14 2009

VALID 151200Z - 161200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...

BLOCKING PATTERN WILL PERSIST TUESDAY WITH A MEAN RIDGE FLANKED BY
UPPER TROUGHS OVER THE ERN PACIFIC AND SERN CANADA. UNDERCUTTING THE
RIDGE WILL BE SEVERAL SMALLER SCALE UPPER LOWS. THE UPPER LOW NOW
APPROACHING THE GREAT BASIN WILL CLOSE OFF AND STALL OVER UT AS IT
BECOMES DETACHED FROM BELT OF STRONGER WLYS. WEAKER CLOSED UPPER LOW
WILL PERSIST OVER THE LOWER MS VALLEY AREA.

...UT...

STEEP LAPSE RATES WILL DEVELOP WHERE SUFFICIENT DIABATIC HEATING
OCCURS BENEATH THE COLD MID LEVEL TEMPERATURES ASSOCIATED WITH UPPER
LOW CIRCULATION. OUTSIDE OF ANY ONGOING THUNDERSTORMS AND
CLOUDS...DIABATIC WARMING OF THE BOUNDARY LAYER WILL RESULT IN
MARGINAL INSTABILITY WITH MLCAPE AOB 500 J/KG. MOST LIKELY ZONE OF
DESTABILIZATION WILL BE OVER CNTRL/SRN UT NEAR DRY SLOT REGION ALONG
SRN PERIPHERY OF UPPER TROUGH. SCATTERED STORMS WILL LIKELY
REDEVELOP DURING THE AFTERNOON. STEEP LAPSE RATES AND COLD AIR ALOFT
COULD SUPPORT A THREAT FOR HAIL. ISOLATED STRONG WIND GUSTS COULD
ALSO ACCOMPANY THE STRONGER ACTIVITY. HOWEVER...THE THERMODYNAMIC
ENVIRONMENT IS NOT EXPECTED TO BECOME SUFFICIENT FOR MORE THAN 5%
SEVERE PROBABILITIES.

...GULF COASTAL REGION...

UPPER LOW OVER THE LOWER MS VALLEY IS FORECAST TO MOVE LITTLE THIS
PERIOD. FRONTAL BOUNDARY WILL PERSIST ALONG THE GULF COASTAL REGION
AND EXTEND WWD TO A WEAK SURFACE LOW OVER THE LOWER MS VALLEY. WV
IMAGERY CURRENTLY INDICATES THAT DRY AIR ALOFT IS BEING ENTRAINED
ALONG SRN PERIPHERY OF UPPER LOW OVER THE NWRN GULF...AND THIS WILL
IMPROVE THE CHANCE FOR BOUNDARY LAYER DESTABILIZATION AS LOW CLOUDS
MIX OUT. HOWEVER...INSTABILITY WILL REMAIN MARGINAL DUE TO WARM AIR
ALOFT AND WEAK LAPSE RATES. FORECAST WIND PROFILES SHOW CONSIDERABLE
VEERING IN THE LOWEST 1 KM IN VICINITY OF THE FRONT. HOWEVER...ONLY
WEAK WIND SPEEDS ASSOCIATED WITH UPPER LOW CIRCULATION WILL LIMIT
HODOGRAPH SIZE. THIS ALONG WITH THE MARGINAL THERMODYNAMIC
ENVIRONMENT SUGGEST ANY SEVERE THREAT IN THIS REGION SHOULD REMAIN
LIMITED.

..DIAL.. 09/14/2009

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WATCHES: Severe Thunderstorm Watch Number 741

WWUS20 KWNS 141717
SEL1
SPC WW 141717
UTZ000-150000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 741
NWS STORM PREDICTION CENTER NORMAN OK
1120 AM MDT MON SEP 14 2009

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

MUCH OF UTAH

EFFECTIVE THIS MONDAY MORNING AND EVENING FROM 1120 AM UNTIL 600
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 80
STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH
NORTHWEST OF OGDEN UTAH TO 30 MILES EAST SOUTHEAST OF BRYCE
CANYON UTAH. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).

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...STRONG/SEVERE THUNDERSTORMS DEVELOPING WRN UT AHEAD OF
UPPER TROUGH. WITH HEATING/STEEPENING LAPSE RATES AND MLCAPES
CLIMBING TO NEAR 1000 J/KG...STORMS WILL CONTINUE INCREASING IN
COVERAGE/INTENSITY THRU THE AFTERNOON AS THEY DEVELOP NEWD.
CLUSTERS AND SHORT LINE SEGMENTS WILL INCREASE THREAT OF DAMAGING
WINDS ALONG WITH THE LARGE HAIL CONCERN WITH ANY STRONG UPDRAFT.

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 22030.

...HALES

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KBMX [141712]: Preliminary Local Storm Report

NWUS54 KBMX 141712
LSRBMX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1212 PM CDT MON SEP 14 2009

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

1130 AM FLASH FLOOD CAMP HILL 32.80N 85.65W
09/14/2009 TALLAPOOSA AL EMERGENCY MNGR

SEVERAL ROADS AROUND CAMP HILL HAD TO BE BARRICADED DUE
TO WATER FLOWING ACROSS THEM. THESE ROADS INCLUDED AL-50
AND CR-89.

&&

$$

61

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KSLC [141707]: Preliminary Local Storm Report...corrected

NWUS55 KSLC 141707 CCA
LSRSLC

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1106 AM MDT MON SEP 15 2009

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

1040 AM TSTM WND GST NW TOOELE 40.73N -114.03W
09/15/2009 M60 MPH WENDOVER WENDOVER ASOS

$$

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KSLC [141643]: Preliminary Local Storm Report

NWUS55 KSLC 141643
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1030 AM MDT MON SEP 15 2009

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

1040 AM NON-TSTM WND GST NW TOOELE 40.73N -114.03W
09/15/2009 M60 MPH WENDOVER WENDOVER ASOS

$$

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MESO: Mesoscale Discussion 2014

ACUS11 KWNS 141609
SWOMCD
SPC MCD 141608
UTZ000-141815-

MESOSCALE DISCUSSION 2014
NWS STORM PREDICTION CENTER NORMAN OK
1108 AM CDT MON SEP 14 2009

AREAS AFFECTED...UT

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 141608Z - 141815Z

SEVERE POTENTIAL WILL LIKELY CONTINUE TO GRADUALLY INCREASE INTO THE
AFTERNOON...ESPECIALLY ACROSS SOUTHERN/WESTERN PORTIONS OF UT. A
CATEGORICAL SLIGHT RISK HAS BEEN INTRODUCED WITH THE 1630Z DAY 1
CONVECTIVE OUTLOOK.

SLIGHTLY NEGATIVE TILT UPPER TROUGH CURRENTLY NEARING THE CA/NV
BORDER VICINITY WILL CONTINUE TO SPREAD EASTWARD OVER NV
TODAY...WITH AMPLE LARGE SCALE FORCING FOR ASCENT/UPPER JET EXIT
REGION EXPECTED TO CONTRIBUTE TO AN UPSWING IN DEEP CONVECTIVE
COVERAGE ACROSS UT THROUGH THE AFTERNOON. WITH PW VALUES AS MUCH AS
0.75-0.85 INCHES...STEEP LAPSE RATE ENVIRONMENT AND AMPLE HEATING
ACROSS MUCH OF UT WILL YIELD MUCAPE AS HIGH AS 1000 J/KG. MODERATELY
STRONG...BUT BACKING...MID LEVEL FLOW AND 30-35 KT EFFECTIVE BULK
SHEAR WILL LIKELY RESULT IN A TENDENCY FOR QUASI-ORGANIZED
MULTICELLULAR CLUSTERS/LINES...WITH THE STRONGEST STORMS CAPABLE OF
SEVERE HAIL/GUSTY WINDS. PORTIONS OF UT HAVE BEEN UPGRADED TO A
CATEGORICAL SLIGHT RISK...ALTHOUGH THE NEED FOR A WATCH LATER TODAY
IS STILL UNCLEAR AT THIS JUNCTURE.

..GUYER.. 09/14/2009

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

ATTN...WFO...SLC...

LAT...LON 40551386 41191255 39911103 37721067 37321185 37611364
40551386

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 141605
SWODY1
SPC AC 141602

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1102 AM CDT MON SEP 14 2009

VALID 141630Z - 151200Z

...THERE IS A SLGT RISK OF SVR TSTMS FOR A LARGE PART OF UTAH...

...UT...
UPPER TROUGH HAS MOVED INLAND OVER CA THIS AM AND BY 12Z TUE
FORECASTED TO BE A CLOSED LOW CENTRAL UT. MOISTURE HAS SPREAD NEWD
AHEAD OF THE TROUGH THRU THE INTERMOUNTAIN REGION OVERNIGHT. THE
LARGE SCALE ASCENT AND COOL AIR ALOFT/STEEP LAPSE RATES/ WITH
APPROACHING TROUGH HAVE INITIATED THUNDERSTORMS VICINITY UT/NV
BORDER THIS AM. HEATING COMBINED WITH THE AVAILABLE MOISTURE...WILL
LEAD TO AN INCREASE IN INSTABILITY ACROSS MUCH OF UT BY MID
AFTERNOON WITH MLCAPES RANGING UPWARD FROM 500-1000 J/KG. WITH DEEP
LAYER SHEAR TO 30KT...SURFACE BASED STORMS WILL INCREASE DURING THE
AFTERNOON...POSSIBLY DEVELOP CLUSTERS AND SHORT LINES. WITH A
DEEPLY MIXED BOUNDARY LAYER...GUSTY WINDS...BRIEFLY SEVERE WILL
DEVELOP E AND NE ACROSS CENTRAL/UT THIS AFTERNOON. IN ADDITION HAIL
WILL BE LIKELY WITH STRONGEST UPDRAFTS GIVEN THE COOL AIR ALOFT AND
STEEP LAPSE RATES...THEREFORE HAVE INTRODUCED A LOW END SLIGHT RISK
FOR THIS AFTERNOON/EVENING.

...CENTRAL GULF COAST STATES...
A TROPICAL AIR MASS RESIDES ACROSS LOWER MS VALLEY IN ADVANCE OF THE
WEAK SURFACE/UPPER LOW CURRENTLY OVER ERN TX. SVR/TOR POTENTIAL AS
OVER THE WEEKEND WILL BE LIMITED BY THE RELATIVELY WEAKLY SHEARED
ENVIRONMENT. HOWEVER TODAY THERE WILL BE MORE HEATING EWD ACROSS LA
AND SRN MS...LEADING TO THE THREAT FOR DISCRETE STORM DEVELOPMENT
AND POSSIBLY WEAK ROTATION.

HAVE CONTINUED A MARGINAL RISK OF BRIEF TORNADOES AND WET MICRO
BURSTS...BUT WITH THE MARGINAL SHEAR...DO NOT EXPECT STORMS TO BE
ORGANIZED OR OF LONG DURATION.

..HALES/GARNER.. 09/14/2009

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KSHV [141428]: Preliminary Local Storm Report

NWUS54 KSHV 141428
LSRSHV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
928 AM CDT MON SEP 14 2009

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

0730 AM FLASH FLOOD GILMER 32.73N 94.95W
09/14/2009 UPSHUR TX LAW ENFORCEMENT

UPSHUR COUNTY SHERIFFS OFFICE REPORTS STALLED CARS ON
SEVERAL COUNTY ROADS DUE TO HIGH WATER. WATER IS ALSO
ENTERING HOMES. A SHED WAS WASHED FROM A YARD ONTO A
ROADWAY.

&&

$$

18

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 140524
SWODY1
SPC AC 140521

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1221 AM CDT MON SEP 14 2009

VALID 141200Z - 151200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...

MOBILE SHORT WAVE TROUGH CURRENTLY MOVING ONTO THE CA COAST WILL
PROGRESS EWD THROUGH THE SIERRA NEVADA BEFORE DECELERATING AND
EVOLVING INTO A CLOSED CIRCULATION OVER THE GREAT BASIN. AS THIS
OCCURS...QUASI-STATIONARY DEEP-LAYER CYCLONE OVER TX WILL BEGIN TO
SLOWLY DRIFT EWD/NEWD.

...CNTRL GULF STATES...

SYNOPTIC PATTERN SIMILAR TO THAT OF THIS PAST WEEKEND WILL PERSIST
THROUGH THE PERIOD...FEATURING THE SLOW EWD MOVEMENT OF A SURFACE
LOW FROM E TX INTO LA. ASSOCIATED WARM FRONT WILL CONCURRENTLY
PIVOT NWWD THROUGH NRN PARTS OF MS/AL AND WRN TN TO VICINITY OF THE
MS RIVER. WARM SECTOR AIR MASS WILL CONTINUE TO BE CHARACTERIZED BY
BOUNDARY LAYER DEWPOINTS IN THE LOW/MID 70S AND PW VALUES AOA 2
INCHES. MIDLEVEL LAPSE RATES WILL REMAIN WEAK...BUT POCKETS OF
STRONGER HEATING COUPLED WITH THE ABUNDANT MOISTURE WILL CONTRIBUTE
TO MODERATE AFTERNOON INSTABILITY WITH MLCAPE OF 1000-2000 J/KG.

VORTICITY MAXIMA ROTATING AROUND PARENT UPPER LOW WILL LIKELY FOSTER
NUMEROUS DIURNAL TSTMS WITHIN SYSTEM WARM SECTOR...SOME OF WHICH MAY
BRIEFLY APPROACH SEVERE LEVELS. VERTICAL SHEAR /BOTH IN THE LOW
LEVELS AND THROUGH A DEEP LAYER/ WILL REMAIN SOMEWHAT MARGINAL FOR
STORM ORGANIZATION/ROTATION. NONETHELESS...A LOW PROBABILITY THREAT
FOR A BRIEF TORNADO AND/OR STRONG WIND GUSTS WILL EXIST WITH ANY
LONGER-LIVED STORMS.

...GREAT BASIN...

AIR MASS IS NOT FORECAST TO BE PARTICULARLY MOIST /PW VALUES AROUND
.75 INCH/...BUT THE PRESENCE OF STEEP LOW TO MIDLEVEL LAPSE RATES
WILL LARGELY CONTRIBUTE TO WEAK CONVECTIVE INSTABILITY LATER TODAY.
TSTMS ARE EXPECTED TO INCREASE IN COVERAGE THIS AFTERNOON AS FORCING
FOR ASCENT ASSOCIATED WITH SHORT WAVE TROUGH ACTS ON DESTABILIZING
ENVIRONMENT. A FEW OF THE STRONGER STORMS WILL BE CAPABLE OF SOME
HAIL AND GUSTY WINDS...THOUGH THE WEAK CONVECTIVE INSTABILITY SHOULD
LIMIT A MORE ORGANIZED SEVERE THREAT.

..MEAD/JEWELL.. 09/14/2009

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KGGW [140427]: Preliminary Local Storm Report

NWUS55 KGGW 140427
LSRGGW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
1027 PM MDT SUN SEP 13 2009

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

1016 PM HAIL FRAZER 48.06N 106.04W
09/13/2009 E1.00 INCH VALLEY MT PUBLIC

&&

$$

VALONE

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WATCHES: Severe Thunderstorm Watch - Number 740

WWUS20 KWNS 140403
SEL0
SPC WW 140403
MTZ000-140400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 740
NWS STORM PREDICTION CENTER NORMAN OK
1003 PM MDT SUN SEP 13 2009

THE NWS STORM PREDICTION CENTER HAS CANCELLED
SEVERE THUNDERSTORM WATCH NUMBER 740 ISSUED AT 235 PM MDT FOR PORTIONS OF

MONTANA

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