Alert archive / Texas / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 309, NWS Midland/Odessa, TX
NWS Midland/Odessa, TX issued this severe thunderstorm warning at Aug 11, 2009, 5:45 PM CDT for Crane County, Pecos County, Ward County, Texas. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 11, 2009, 5:45 PM CDT (22:45 UTC)
- Expired
- Aug 11, 2009, 6:30 PM CDT
- In force
- 45 min
- Issued by
- NWS Midland/Odessa, TX
- Area
- Storm-based polygon
Counties Crane County, TX, Pecos County, TX, Ward County, TX
The radar
The Midland/Odessa radar (KMAF), 96 km from the middle of the area, began a volume at 22:46 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 10.8 hours before the alert went out and 96 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 620 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 1522 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Midland/Odessa, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 11, 2:42 PM CDT, 3 hours 3 minutes earlier.
Area forecast discussion, Aug 11, 2:42 PM CDT, 3 hours 3 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX 242 PM CDT TUE AUG 11 2009 .DISCUSSION... SHOWERS AND THUNDERSTORMS ARE DEVELOPING ACROSS WEST TEXAS AND SOUTHEASTERN NEW MEXICO THIS AFTERNOON DUE TO THREE SEPARATE TRIGGERING MECHANISMS. ISOLATED CONVECTION OUT WEST IS DUE TO TERRAIN...STRONG THUNDERSTORMS ACROSS OUR NORTHERN CWA ARE DUE TO A QUASI STATIONARY FRONT...AND CONVECTION IN THE EASTERN PERMIAN BASIN IS DEVELOPING ALONG A 850MB THETA E AXIS. PRECIPITABLE WATER IS MODEST AT 1.25-1.5 INCHES SO SLOW MOVING STORMS WILL HAVE SOME POTENTIAL TO PRODUCE LOCALIZED MINOR FLOODING. 88D VWP SHOWS EASTERLY WINDS AT 10 KTS THROUGH THE LOWEST 7KM SO THE SEVERE THREAT WILL BE MINIMAL WITH SUCH WEAK SHEAR. AM EXPECTING THE TERRAIN CONVECTION TO DISSIPATE FIRST TONIGHT...WITH THE STORMS HOLDING ON LONGEST WHERE THE FRONT AND THETA E RIDGE AXIS INTERSECT IN THE NORTHEASTERN PERMIAN BASIN. THE FRONT WILL SLOWLY SAG SOUTH TOMORROW CONTINUING TO PROVIDE A FOCUS FOR CONVECTION. I MAY HAVE UNDERDONE POPS WED FROM THE DAVIS MOUNTAINS TO THE LOWER TRANS PECOS REGION AND THE MID SHIFT WILL HAVE TO TAKE A CLOSE LOOK AT THIS TONIGHT. THE FRONT WILL NOT HAVE MUCH OF AN EFFECT ON TEMPS AND WILL LIFT BACK NORTH ON THURSDAY. THE UPPER RIDGE CURRENTLY OVER NEW MEXICO WILL SHIFT EAST AS A DEEP WEST COAST TROUGH DEVELOPS. MODELS ARE IN DECENT AGREEMENT ON THIS BUT THERE ARE SOME AREAS OF UNCERTAINTY. COOLED TEMPS DOWN ON FRIDAY DUE TO THE 12Z GFS SHOWING A LEADING UPPER TROUGH MOVING ACROSS THE AREA...INCREASING CLOUDS AND PRECIP...AND WITH LESS SUBSIDENCE SHOULD KEEP TEMPS COOLER. HOWEVER THERE ARE SOME INDICATIONS THAT THE GFS MAY BE FAST...OR IT MAY NOT HAPPEN AT ALL. SOMETHING ELSE THE GFS IS SHOWING IS AN UPPER TROUGH APPROACHING FROM THE EAST AROUND THE SOUTHEAST U.S. HIGH MOVING INTO THE BIG BEND REGION ON SUNDAY. IF THIS WERE TO HAPPEN WE COULD SEE POPS INCREASE AGAIN...BUT THE GFS IS NOTORIOUS FOR ITS POOR HANDLING OF SUCH SYSTEMS AND THUS CONFIDENCE IS LOW FOR THIS MODEL SOLUTION LATE IN THE FORECAST PERIOD. HENNIG && .PRELIMINARY POINT TEMPS/POPS... BIG SPRING TX 73 94 70 95 / 40 20 20 10 CARLSBAD NM 69 94 70 99 / 30 20 10 10 DRYDEN TX 74 99 74 96 / 20 20 20 10 FORT STOCKTON TX 72 97 72 98 / 30 20 20 10 GUADALUPE PASS TX 66 94 65 94 / 30 20 10 20 HOBBS NM 71 97 70 99 / 40 20 10 10 MARFA TX 59 88 60 90 / 30 20 10 20 MIDLAND INTL AIRPORT TX 72 95 71 97 / 30 20 20 10 ODESSA TX 73 95 72 96 / 30 20 20 10 WINK TX 74 102 75 102 / 20 20 20 10 && .MAF WATCHES/WARNINGS/ADVISORIES... NM...NONE. TX...NONE. && 44/10
Hazardous weather outlook, Aug 11, 1:49 PM CDT, 3 hours 56 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX 149 PM CDT TUE AUG 11 2009 NMZ027>029-033-034-TXZ045>048-050>053-057>063-067>070-074-075- 079>082-258-121900- GUADALUPE MOUNTAINS OF EDDY COUNTY-EDDY COUNTY PLAINS- NORTHERN LEA COUNTY-CENTRAL LEA COUNTY-SOUTHERN LEA COUNTY-GAINES- DAWSON-BORDEN-SCURRY-ANDREWS-MARTIN-HOWARD-MITCHELL- VAN HORN AND HIGHWAY 54 CORRIDOR-REEVES COUNTY AND UPPER TRANS PECOS- LOVING-WINKLER-ECTOR-MIDLAND-GLASSCOCK-WARD-CRANE-UPTON-REAGAN- DAVIS/APACHE MOUNTAINS AREA-PECOS-PRESIDIO VALLEY-MARFA PLATEAU- BIG BEND AREA-TERRELL-GUADALUPE MOUNTAINS- 149 PM CDT TUE AUG 11 2009 /1249 PM MDT TUE AUG 11 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST NEW MEXICO...SOUTHWEST TEXAS AND WEST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE WILL BE A CHANCE OF THUNDERSTORMS THIS AFTERNOON AND EVENING...MAINLY OVER SOUTHEAST NEW MEXICO AND THE WESTERN LOW ROLLING PLAINS. ANY THUNDERSTORMS THAT DO DEVELOP WILL BE ACCOMPANIED BY FREQUENT LIGHTNING...SMALL HAIL...GUSTY WINDS...AND HEAVY RAINFALL. OTHERWISE...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE WILL BE A SLIGHT CHANCE OF THUNDERSTORMS INTO THE WEEKEND...MAINLY OVER THE MOUNTAINS OF WEST TEXAS AND SOUTHEAST NEW MEXICO. ANY STORMS THAT DO DEVELOP WILL BE ACCOMPANIED BY FREQUENT LIGHTNING...SMALL HAIL...GUSTY WINDS...AND BRIEF HEAVY RAINFALL. OTHERWISE...THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. THIS PRODUCT...ALONG WITH OTHER WATCHES...WARNINGS...ADVISORIES... AND STATEMENTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN MIDLAND CAN BE FOUND ON THE INTERNET AT /LOWER CASE/ HTTP://WEATHER.GOV/MIDLAND 44
In the hours before
Special weather statement, Aug 11, 4:27 PM CDT, 1 hour 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX 427 PM CDT TUE AUG 11 2009 TXZ075-112215- PECOS- 427 PM CDT TUE AUG 11 2009 ...SIGNIFICANT WEATHER ALERT... THIS SIGNIFICANT WEATHER ALERT IS FOR SOUTH CENTRAL PECOS COUNTY. A STRONG THUNDERSTORM WAS LOCATED OVER SOUTH CENTRAL PECOS COUNTY AT 426 PM CDT...AND WAS NEARLY STATIONARY. ADDITIONAL STRONG THUNDERSTORMS WERE LOCATED ALONG HIGHWAY 285 SOUTHEAST OF FORT STOCKTON. GUSTY WINDS...SMALL HAIL...HEAVY RAINFALL AND DEADLY LIGHTNING ARE POSSIBLE WITH THESE STORMS.
Special weather statement, Aug 11, 4:30 PM CDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX 430 PM CDT TUE AUG 11 2009 TXZ052-112200- HOWARD- 430 PM CDT TUE AUG 11 2009 ...SIGNIFICANT WEATHER ALERT... THIS SIGNIFICANT WEATHER ALERT IS FOR SOUTHERN HOWARD COUNTY. AT 428 PM CDT...AN INTENSIFYING THUNDERSTORM WAS LOCATED NEAR BIG SPRING AT 428 PM CDT. THE STORM WAS NEARLY STATIONARY. SMALL HAIL UP TO THE SIZE OF MARBLES...WIND GUSTS NEAR 50 MPH...VERY HEAVY RAINFALL...AND DEADLY CLOUD TO GROUND LIGHTNING ARE POSSIBLE WITH THIS STORM. PEOPLE IN SOUTHERN HOWARD COUNTY...INCLUDING THE CITY OF BIG SPRING...SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR WARNINGS AND REMAIN ALERT FOR THREATENING WEATHER CONDITIONS.
Local storm report, Aug 11, 4:45 PM CDT, 1 hour before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
445 PM CDT TUE AUG 11 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0421 PM TSTM WND DMG COLORADO CITY 32.40N 100.86W
08/11/2009 MITCHELL TX LAW ENFORCEMENT
ROOF REPORTED BLOWN OFF A BUILDING AND TREES DOWN IN
COLORADO CITY.
&&
CHRIS.DANIELSSpecial weather statement, Aug 11, 4:57 PM CDT, 48 minutes before
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</html>Local storm report, Aug 11, 5:13 PM CDT, 32 minutes before
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</html>Special weather statement, Aug 11, 5:22 PM CDT, 23 minutes before
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</html>The office that day
Everything else NWS Midland/Odessa, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 4:25 PM CDT | Severe Thunderstorm Warning | MAF | Mitchell | 50 min |
| Aug 11, 4:30 PM CDT | Areal Flood Advisory | MAF | Mitchell | 3 hr |
| Aug 11, 4:45 PM CDT | Areal Flood Advisory | MAF | Howard | 105 min |
| Aug 11, 4:47 PM CDT | Flash Flood Warning | MAF | Mitchell | 3 hr |
| Aug 11, 6:11 PM CDT | Areal Flood Advisory | MAF | Brewster, Pecos, Terrell | 3 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2009Every severe thunderstorm warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.