Between two and three inches of rainfall fell over the city of Laredo causing flash flooding of low lying roads.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CRP wrote it up.
Between two and three inches of rainfall fell over the city of Laredo causing flash flooding of low lying roads.
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 Corpus Christi, TX wrote its last area forecast discussion before the first event at May 27, 10:20 PM CST, 1 hour 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 1120 PM CDT WED MAY 27 2009 .DISCUSSION...SEE THE AVIATION DISCUSSION BELOW FOR MORE DETAILS. && .AVIATION...ONGOING CONVECTION ACROSS THE RIO GRANDE PLAINS WL PRODUCE MVFR/IFR CONDITIONS ACROSS LAREDO FOR MUCH OF THE MORNING. THIS CONVECTION WL SLOWLY MOVE EWD THROUGH THURSDAY MORNING ACROSS SOUTH TX. HOWEVER...MOST OF THE CEILINGS ARE EXPECTED TO REMAIN ABV MVFR CRITERIA GIVEN THE DRIER AIRMASS IN PLACE DUE TO EARLIER CONVECTION IN THE DAY. BRIEF MVFR CONDITIONS ARE EXPECTED ACROSS THE NORTHEAST COASTAL BEND (VCT TAF SITE) BETWEEN 09Z AND 15Z THU AS LIGHT FOG DEVELOPS. BRIEF MVFR/IFR CONDITIONS WITHIN CONVECTION WL STILL BE POSSIBLE THROUGH 22Z THURSDAY. VFR CONDITIONS WL PREVAIL TMW NIGHT AS EVEN DRIER AND MORE STABLE CONDITIONS PUSH INTO THE AREA. && .PREV DISCUSSION... /ISSUED 838 PM CDT WED MAY 27 2009/ DISCUSSION...SEVERAL CLUSTERS OF STRONG TO SEVERE CONVECTION CONTINUE TO FIRE JUST TO THE NORTHWEST AND WEST OF THE RIO GRANDE PLAINS THIS EVENING. THIS CONVECTION IS BEING AIDED BY THE LEFT-FRONT QUAD OF A 70-80 KT JET STREAK MOVING THROUGH CENTRAL MEXICO AND SVRL CONVECTIVE OUTFLOWS MOVING THROUGH THIS RGN. THE LATEST LAPS DATA INDICATE SFC-BASED CAPES AVERAGING 2500-3500 J/KG WITH A WEAK CAP. EXPECT THESE CLUSTERS OF STORMS TO EVENTUALLY PROPAGATE INTO THE RIO GRANDE PLAINS DURING THE EVENING HOURS BASED UPON THE MEAN STEERING CURRENTS AND CONVECTION BUILDING TWDS THE HIGHER INSTABILITY WHICH EXIST ACROSS THIS RGN. BLV LARGE HAIL AND GUSTY WINDS WL BE THE MAIN THREAT ALONG WITH TORRENTIAL RAIN. BLV MOST OF THIS ACTIVITY WL LINGER THROUGH THE FIRST HALF OF TNT. ALTHOUGH...EXPECT CONVECTION TO EVEN LINGER AFTER MIDNIGHT ACROSS THIS RGN GIVEN THE DYNAMIC SUPPORT THAT EXISTS. FURTHER EAST...BLV THE AIRMASS WL BE TOO STABLE AND WORKED OVER FROM PREVIOUS STORMS FOR CONVECTION TO OCCUR TNT. WL THUS DROP POPS ACROSS THE ERN AREAS AND THE WATERS FOR TNT. MARINE...BUOY 42020 CONTINUES TO REPORT 6 FT SEAS WHICH WAS MOSTLY DUE TO EARLIER STRONG THUNDERSTORM WINDS. AS THE WINDS CONTINUE TO COME DOWN TNT...THE SEAS WL SLOWLY COME DOWN TOO. WITH THE OVERALL GRADIENT REMAINING QUITE WK...NO FLAGS ARE EXPECTED. && .PRELIMINARY POINT TEMPS/POPS... CORPUS CHRISTI 72 88 70 89 68 / 10 40 10 20 10 VICTORIA 68 88 67 91 65 / 10 30 10 10 10 LAREDO 76 94 75 94 73 / 40 40 20 20 10 ALICE 71 92 69 91 68 / 10 40 10 20 10 ROCKPORT 74 86 71 88 72 / 10 30 10 10 10 COTULLA 70 91 69 93 68 / 40 40 20 10 10 KINGSVILLE 72 92 68 90 68 / 10 40 10 20 10 NAVY CORPUS 76 87 72 86 72 / 10 40 10 20 10 && .CRP WATCHES/WARNINGS/ADVISORIES... TX...NONE. GM...NONE. && MB
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 329 PM CDT WED MAY 27 2009 GMZ230-235-250-255-270-275-TXZ229>234-239>247-281200- BAYS AND WATERWAYS FROM BAFFIN BAY TO PORT ARANSAS- BAYS AND WATERWAYS FROM PORT ARANSAS TO PORT OCONNOR- COASTAL WATERS BAFFIN BAY TO PORT ARANSAS OUT 20 NM- COASTAL WATERS PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT 20 NM- WATERS BAFFIN BAY TO PORT ARANSAS 20 TO 60 NM- WATERS PORT ARANSAS TO MATAGORDA SHIP CHANNEL 20 TO 60 NM- LA SALLE-MCMULLEN-LIVE OAK-BEE-GOLIAD-VICTORIA-WEBB-DUVAL- JIM WELLS-KLEBERG-NUECES-SAN PATRICIO-ARANSAS-REFUGIO-CALHOUN- 329 PM CDT WED MAY 27 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS AND THE MIDDLE TEXAS COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT AN OUTFLOW BOUNDARY FROM STRONG THUNDERSTORMS IN THE COASTAL BEND WILL CONTINUE TO DRIFT WEST ACROSS THE RIO GRANDE PLAINS AND VALLEY. THIS IN COMBINATION WITH SIERRA MADRE CONVECTION MOVING EAST OUT OF MEXICO DUE TO STRONG HEATING AND A WEAK UPPER LEVEL DISTURBANCE WILL PROVIDE SCATTERED THUNDERSTORMS ALONG THE RIO GRANDE VALLEY OVERNIGHT. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS PRODUCING LARGE HAIL AND DAMAGING WINDS ASSOCIATED WITH THIS ACTIVITY. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SCATTERED THUNDERSTORMS ARE EXPECTED ONCE AGAIN ON THURSDAY AS A WEAK UPPER LEVEL DISTURBANCE AND JET STREAM INTERACT WITH HIGH MOISTURE AND INSTABILITY ALONG A WEAK FRONTAL BOUNDARY AND THE SEA BREEZE. GIVEN ADEQUATE HEATING A FEW STORMS MAY BECOME SEVERE PRODUCING LARGE HAIL AND DAMAGING WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED. MJG
The Corpus Christi radar (KCRP), 197 km away, was scanning. The volume nearest the first event began at 05:40 UTC.
1 flash flood. Local standard time, as filed.
Flash flooding required various roads to be barricaded and four high water rescues in the city of Laredo.
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, May 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: 177004.