An isolated thunderstorm developed over the southeastern South Plains of west Texas during the afternoon hours of the 16th. This storm produced large hail in the Post vicinity (Garza County).
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The episode as NWS LUB wrote it up.
An isolated thunderstorm developed over the southeastern South Plains of west Texas during the afternoon hours of the 16th. This storm produced large hail in the Post vicinity (Garza County).
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Lubbock, TX wrote its last area forecast discussion before the first event at Aug 16, 2:56 PM CST, 54 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LUBBOCK TX 356 PM CDT SUN AUG 16 2009 .SHORT TERM... A COLD FRONT RIPPED THROUGH THE AREA THIS MORNING WHICH HAS KEPT TEMPERATURES ACROSS THE NORTHWESTERN ZONES IN THE 80S. THE RUC HAS DEPICTED THE FRONTAL POSITION WELL TODAY. THE FRONT WILL THEN RETREAT BACK TOWARDS THE PANHANDLE THIS EVENING WITH SOUTHERLY WINDS RETURNING TO THE AREA. STORM CHANCES ARE MUCH LESS TODAY ACROSS THE FA AS THERE IS LITTLE TO NO MID AND UPPER LEVEL SUPPORT. HOWEVER...THERE IS SOME FRONTOGENESIS AND SURFACE CONVERGENCE ALONG THE FRONTAL BOUNDARY WHICH MAY HELP INITIATE SOME ISOLATED STORMS LATER THIS AFTERNOON. MU CAPES ARE ON THE ORDER OF 1500-2000 J/KG ACROSS NORTHEASTERN ZONES ALONG WITH BULK SHEAR VECTORS OF 25 TO 30 KNOTS. THERE IS SOME ELEVATED INSTABILITY BUT MUCH WEAKER. PRECIPITABLE WATER VALUES ARE STILL IN EXCESS OF 1.5 INCHES OFF THE CAPROCK AND WITH A LOW LEVEL JET OF 40+ KNOTS AGAIN THIS EVENING...SOME WEAK ORGANIZATION OF STORMS MAY BE POSSIBLE OFF THE CAPROCK. JDV && .LONG TERM... FRONT CONTINUES TO MIX NORTHWARD MONDAY NITE LEAVING THE AREA WITH SLY FLOW AT THE SURFACE AND SWLY FLOW ALOFT. LACK OF ANY DEFINING SURFACE FEATURES OR S/W ALOFT WILL ALSO LIKELY PRECLUDE PRECIPITATION DEVELOPMENT FOR MONDAY NIGHT. TUESDAY CONTINUES TO PRESENT PROBLEMS WITH REGARDS TO POPS AS MODELS HINT AT A WEAK S/W MOVING OVER THE AREA AND A WEAK LEE TROF ACROSS THE WRN ZONES. 12Z RUNS HAVE COOLED TEMPS ALOFT A TAD WITH THE PASSAGE OF THE S/W AND THIS MIGHT BE ENOUGH TO ALLOW A FEW STORMS TO FIRE ACROSS THE WRN ZONES. MODELS ALSO HAD A BAD HANDLE ON HOW FAR SOUTH THE COLD FRONT WOULD MAKE IT SUNDAY SO THERE IS AN OUTSIDE SHOT THE FRONTAL BOUNDARY COULD BE IN OUR NRN ZONES. OPTED TO PLACE POPS BACK IN THE FCST EVEN THOUGH MODELS WILL CONTINUE TO BOUNCE BETWEEN CONDITIONS FAVORABLE AND UNFAVORABLE FOR PRECIP DEVELOPMENT. FRONT MIXES NORTHWARD ON WEDNESDAY WITH TEMPS A FEW DEGREES WARMER BEFORE THE NEXT FRONT PUSHES IN FOR THURSDAY. MODELS CONTINUE TO SHOW GENERAL AGREEMENT WITH THE LOCATION/TIMING OF THE FRONT AND POP FCST LOOKS GOOD FOR NOW. BIGGEST CHANGE WAS THE 12Z MODELS HOLD OFF ON BUILDING THE RIDGE BACK OVER THE AREA FOR THE END OF THE FCST AND NOW KEEP US IN NWLY TO NLY FLOW. OPTED NOT TO CHANGE THINGS FROM THURSDAY THROUGH THE END OF THE FCST UNTIL MODELS START TO SETTLE DOWN AND AGREE ON A CONSISTENT SOLUTION. JORDAN && .PRELIMINARY POINT TEMPS/POPS... FRIONA 64 93 64 91 64 / 10 10 10 20 20 TULIA 67 94 65 92 68 / 20 10 10 20 20 PLAINVIEW 67 95 65 92 69 / 20 10 10 20 20 LEVELLAND 66 97 66 92 67 / 10 10 10 10 20 LUBBOCK 70 97 69 93 69 / 10 10 10 10 10 DENVER CITY 67 98 65 92 68 / 10 10 0 10 10 BROWNFIELD 67 98 68 93 68 / 10 10 0 10 10 CHILDRESS 73 100 72 98 71 / 20 10 10 20 20 SPUR 71 99 70 95 72 / 20 10 10 10 10 ASPERMONT 75 101 73 97 74 / 20 10 0 10 10 && .LUB WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LUBBOCK TX 555 AM CDT SUN AUG 16 2009 TXZ021>044-171100- PARMER-CASTRO-SWISHER-BRISCOE-HALL-CHILDRESS-BAILEY-LAMB-HALE- FLOYD-MOTLEY-COTTLE-COCHRAN-HOCKLEY-LUBBOCK-CROSBY-DICKENS-KING- YOAKUM-TERRY-LYNN-GARZA-KENT-STONEWALL- 555 AM CDT SUN AUG 16 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE EXTREME SOUTHERN TEXAS PANHANDLE...SOUTH PLAINS AND ROLLING PLAINS. .DAY ONE...TODAY AND TONIGHT CONVECTIVE THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS THIS AFTERNOON AND TONIGHT GENERALLY NORTH OF A BOVINA TO PADUCAH LINE AS A WEAK COLD FRONT MOVES INTO THE EXTREME SOUTHERN PANHANDLE. SOME OF THE THUNDERSTORMS WILL BE OF CAPABLE OF PRODUCING WIND GUSTS IN EXCESS OF 50 MPH. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED DUE TO THE ISOLATED NATURE OF POTENTIAL SEVERE WEATHER.
The Lubbock radar (KLBB), 72 km away, was scanning. The volume nearest the first event began at 21:49 UTC.
1 hail. Local standard time, as filed.
The local broadcast media relayed reports and accompanying photographs of three-quarter inch diameter hail south of Post.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2009Every state in 2009This day in weather historyWarnings in Texas, August 2009
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 190943.