An isolated severe thunderstorm produced nickel size hail and damaging thunderstorm winds in the O'Donnell vicinity of southern Lynn County. Although tree damage was reported, no significant damages occurred.
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The episode as NWS LUB wrote it up.
An isolated severe thunderstorm produced nickel size hail and damaging thunderstorm winds in the O'Donnell vicinity of southern Lynn County. Although tree damage was reported, no significant damages occurred.
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 Jul 27, 2:26 PM CST, 2 hours 41 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LUBBOCK TX 326 PM CDT MON JUL 27 2009 .SHORT TERM... A MID LEVEL DISTURBANCE/DEFORMATION ZONE MOVING SOUTH THROUGH THE PANHANDLE THIS AFTERNOON WAS HELPING TRIGGER SCATTERED SHOWERS AND THUNDERSTORMS. THIS RAIN ACTIVITY IS EXPECTED TO CONTINUE INCREASING THROUGH LATE AFTERNOON...ESPECIALLY OVER THE SOUTHERN PANHANDLE AND NORTHERN SOUTH PLAINS. THE SHOWERS THAT FORM THIS AFTERNOON WILL LIKELY DIMINISH BY LATE EVENING AS SURFACE HEATING ENDS. HOWEVER...WITH UPPER STEERING WINDS REMAINING OUT OF THE NORTHWEST...THE SHOWERS WILL BE MOVING INTO THE SOURCE REGION OF THE MOISTURE AND COULD LINGER INTO THE OVERNIGHT HOURS. ADDITIONAL SHOWER AND THUNDERSTORM ACTIVITY IS EXPECTED TO BEGIN INCREASING LOCALLY TUESDAY AFTERNOON AS MOIST EASTERLY FLOW CONTINUES TO PUSH UPSLOPE INTO THE REGION WHILE UPPER LEVEL WINDS REMAIN OUT OF THE NORTHWEST. MILD DAYTIME TEMPERATURES ARE EXPECTED ONCE AGAIN TUESDAY. && .LONG TERM... TUESDAY NIGHT ANOTHER H5 SHORTWAVE WILL PUSH THRU THE CWA. BOTH GFS AND NAM ARE IN GOOD AGREEMENT TO WHERE THE ASSOCIATED MCS WILL DEVELOP...THEREFORE HAVE KEPT POPS UP CONSIDERING MOST OF THE CWA SHOULD SEE SOME PRECIP. BY MIDDAY WEDNESDAY MORE STORMS ARE EXPECTED TO DEVELOP IN THE PANHANDLES AHEAD OF A COLD FRONT THAT WILL PUSH THRU THE CWA ON THURSDAY. MOST OF THE STORMS ARE EXPECTED TO STAY IN THE PANHANDLES UNTIL 10Z THURSDAY WHEN THE FRONTAL BOUNDARY MAKES ITS WAY TO THE CWA. FROPA IS EXPECT AROUND 16Z ON THURSDAY FOR KLBB. BY 18Z THE FRONT WILL HAVE MADE ITS WAY THRU THE CWA...ALTHOUGH IS EXPECT TO BECOME A STATIONARY FRONT TO OUR SOUTH. THEREFORE I HAVE LEFT POPS NEAR THE SLGT RANGE TO ACCOUNT FOR ANY DEVELOPMENT THAT MAY OCCUR. FRIDAY NIGHT & INTO THE WEEKEND IS EXPECTED TO BE DRY EXCEPT MAY BE A FEW SHOWERS ON THE NORTHEAST MOST ZONES. THIS WILL ALLOW FOR A WARMING TREND WHICH SHOULD BRING TEMPS BACK TO NEAR NORMAL. BY THE END OF THE WEEK THE MODELS VARY GREATLY...THE GFS HAS THE LOW OFF THE WEST COAST PUSH IN LAND...SETTING UP THE RIDGE OVER NEW MEXICO. WHILE THE EUROPEAN HAS IT STAYING OFF THE COAST BUT MOVING MORE NORTH MAKING OUR FLOW PATTERN MORE WESTERLY. HAVE GONE WITH THE EURO...MAINLY DUE TO THE FACT THAT IT DOES NOT DRY THE CWA OUT AS MUCH AFTER FROPA. && .PRELIMINARY POINT TEMPS/POPS... FRIONA 65 87 64 90 63 / 30 30 60 60 50 TULIA 67 86 65 86 65 / 30 30 60 60 50 PLAINVIEW 68 88 65 86 66 / 30 30 60 60 40 LEVELLAND 68 90 65 86 67 / 30 30 60 50 40 LUBBOCK 67 90 65 86 67 / 20 30 50 60 40 DENVER CITY 67 92 67 88 69 / 30 30 50 40 30 BROWNFIELD 71 92 66 87 69 / 30 30 50 50 40 CHILDRESS 69 89 68 85 68 / 30 30 50 60 50 SPUR 70 91 68 87 69 / 20 30 50 60 50 ASPERMONT 72 93 72 88 72 / 20 30 50 60 50 && .LUB WATCHES/WARNINGS/ADVISORIES... NONE. && 04/40
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LUBBOCK TX 505 AM CDT MON JUL 27 2009 TXZ021>044-281015- PARMER-CASTRO-SWISHER-BRISCOE-HALL-CHILDRESS-BAILEY-LAMB-HALE- FLOYD-MOTLEY-COTTLE-COCHRAN-HOCKLEY-LUBBOCK-CROSBY-DICKENS-KING- YOAKUM-TERRY-LYNN-GARZA-KENT-STONEWALL- 505 AM CDT MON JUL 27 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE EXTREME SOUTHERN TEXAS PANHANDLE...SOUTH PLAINS AND ROLLING PLAINS. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SEVERAL CLUSTERS OF ORGANIZED STRONG OR EVEN SEVERE THUNDERSTORMS MAY DEVELOP FROM LATE TUESDAY THROUGH THE END OF THE WEEK UNDER A VERY MOIST AND INCREASINGLY UNSTABLE AIRMASS AND NORTHWEST FLOW ALOFT. BRIEF STRONG TO SEVERE WIND GUSTS AND ISOLATED LARGE HAIL WILL BE THE PRIMARY CONCERNS. STORM RUNOFF COULD BECOME EXCESSIVE IN A FEW AREAS BY REPEATED HEAVY RAINFALL AS A NEARLY STATIONARY FRONTAL BOUNDARY WILL BECOME PARALLEL TO THE UPPER LEVEL FLOW.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LUBBOCK TX 542 PM CDT MON JUL 27 2009 TXZ041-272315- LYNN TX- 542 PM CDT MON JUL 27 2009 ...STRONG THUNDERSTORM ACROSS LYNN COUNTY... AT 540 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 7 MILES WEST OF TAHOKA...MOVING EAST AT 10 MPH. SMALL HAIL AND BRIEF...STRONG WIND GUSTS ARE POSSIBLE NEAR THIS THUNDERSTORM. MOVE TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES. STAY AWAY FROM WINDOWS. STORM INTENSITY IS INCREASING AND SEVERE WEATHER MAY DEVELOP RAPIDLY. BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED. LAT...LON 3323 10163 3296 10175 3297 10206 3329 10198 TIME...MOT...LOC 2241Z 292DEG 9KT 3313 10190
The Lubbock radar (KLBB), 73 km away, was scanning. The volume nearest the first event began at 23:07 UTC.
1 hail, 1 thunderstorm wind. Local standard time, as filed.
The public and local newspaper articles reported nickel size hail in O'Donnell shortly after 17:00 CST.
Following a bout of large hail, extreme winds and torrential rainfall accompanied an apparent downburst over the O'Donnell vicinity. The Texas Tech University West Texas Mesonet site just north of the town recorded a brief but intense gust of 75 mph at 17:20 CST. Although no significant damage was reported, a large tree was blown down along Nassau Road.
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, July 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: 186604, 186605.