A cold front moved through South Central Texas and caused isolated thunderstorms one of which produced severe winds.
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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 EWX wrote it up.
A cold front moved through South Central Texas and caused isolated thunderstorms one of which produced severe winds.
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 Austin/San Antonio, TX wrote its last area forecast discussion before the first event at Mar 20, 6:11 AM CST, 1 hour 39 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 711 AM CDT SAT MAR 20 2010 .AVIATION... THE MAIN STORY WILL BE WINDS FROM 290-340 DEGREES AT 25G35KT FOR ALL TAF SITES TODAY...AND TO A LESSER EXTENT REPEATED ON SUNDAY. EXPECT TSRA TO END BY 14 UTC AT THE I-35 SITES AND ALL PRECIP TO END BY 15-16 UTC. CIGS SHOULD IMPROVE TO MVFR BY MIDDAY. && .PREV DISCUSSION... /ISSUED 349 AM CDT SAT MAR 20 2010/ DISCUSSION... STRONG CONVECTION SKIRTING THE NWRN CWA ALONG THE LEADING EDGE OF THE COLD FRONT THIS MORNING. EXPECT THE CONVECTION TO RAPIDLY PROGRESS EASTWARD ACROSS THE CWA THIS MORNING WITH SOME LOCALLY HEAVY RAINFALL EAST OF I35 BEFORE NOON. ALTHOUGH NOT EXPECTING ANY SEVERE...A FEW STORMS ALONG THE LEADING EDGE WILL BE STRONG WITH POSSIBLE WIND GUSTS OF 40 TO 50 MPH...ALONG WITH SOME SMALL HAIL. CONVECTION TO END FROM THE WEST LATE MORNING/AFTERNOON WITH A FEW WRAP-AROUND SHOWERS ACROSS THE EASTERN COUNTIES INTO THE LATE AFTERNOON. HAVE ALREADY POSTED A WIND ADVISORY FOR GUSTY NORTH WINDS BEHIND THE FRONT FOR TODAY...AND WINDS WILL STAY UP TONIGHT AND HELP KEEP TEMPERATURES UP THRU MIXING. HOWEVER COLD AIR ADVECTION WILL STILL RESULT IN LOWS AROUND FREEZING IN PARTS OF THE HILL COUNTRY AND HAVE ALREADY POSTED A FREEZE WARNING FOR THE HILL COUNTRY TONIGHT. WITH THE DEEP UPPER LOW OVER THE LA/AR ON SUNDAY....WILL CONTINUE TO HAVE A STRONG NWLY FLOW ALOFT ACROSS TX...WHICH WILL ALSO KEEP DRY SURFACE WINDS OF 15 TO 25 MPH ACROSS THE AREA. BY SUNDAY EVENING HOWEVER...WINDS WILL QUICKLY DIMINISH AND MORE WIDESPREAD FREEZING TEMPERATURES ARE LIKELY AS THE COLD DRY SURFACE RIDGE SITS OVER S TX. BY MONDAY THE SURFACE RIDGE SLIDES EAST AND RETURN FLOW RESUMES BY THE AFTERNOON WITH WARMER TEMPERATURES AS A THE SHORT WAVE RIDGE PUSHES IN FROM THE WEST. GULF MOISTURE RETURNS LATE TUE INTO WED WITH RAIN CHANCES INCREASING AS A SERIES OF DISTURBANCES LIFT OUT OF NE MEXICO AND ACROSS S TX WED AND THU. THE MAIN UPPER TROF PUSHES EAST OF THE AREA LATE THU/FRI WITH A PACIFIC COLD FRONT BRINGING DRIER AIR TO THE REGION THU NIGHT/FRI. FIRE WEATHER... COMBINATION OF WETTING RAINS AND COLD AIR ADVECTION SHOULD KEEP FIRE WEATHER CONDITIONS BELOW CRITICAL LEVELS...BUT WILL MENTION NEAR ELEVATED ACROSS THE SWRN COUNTIES WHERE WETTING RAINS WILL BE MINIMAL. SUNDAY IS STILL LOOKING VERY DRY WITH NWLY WINDS INCREASING AGAIN AND THEREFORE WILL ISSUE A FIRE WEATHER WATCH FOR ALL OF THE AREA. BY MONDAY WINDS WILL BE MUCH LIGHT ALTHOUGH HUMIDITIES WILL AGAIN BE QUITE LOW INTO THE TEENS AND 20S. && .EWX WATCHES/WARNINGS/ADVISORIES... FIRE WEATHER WATCH FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR THE FOLLOWING COUNTIES: ATASCOSA...BANDERA...BASTROP...BEXAR... BLANCO...BURNET...CALDWELL...COMAL...DE WITT...DIMMIT...EDWARDS... FAYETTE...FRIO...GILLESPIE...GONZALES...GUADALUPE...HAYS...KARNES... KENDALL...KERR...KINNEY...LAVACA...LEE...LLANO...MAVERICK... MEDINA...REAL...TRAVIS...UVALDE...VAL VERDE...WILLIAMSON...WILSON... ZAVALA. WIND ADVISORY UNTIL 8 PM CDT THIS EVENING FOR THE FOLLOWING COUNTIES: ATASCOSA...BANDERA...BASTROP...BEXAR...BLANCO...BURNET... CALDWELL...COMAL...DE WITT...DIMMIT...EDWARDS...FAYETTE...FRIO... GILLESPIE...GONZALES...GUADALUPE...HAYS...KARNES...KENDALL...KERR... KINNEY...LAVACA...LEE...LLANO...MAVERICK...MEDINA...REAL...TRAVIS... UVALDE...VAL VERDE...WILLIAMSON...WILSON...ZAVALA. FREEZE WARNING FROM 1 AM TO 9 AM CDT SUNDAY FOR THE FOLLOWING COUNTIES: BANDERA...BLANCO...BURNET...EDWARDS...GILLESPIE... KENDALL...KERR...LLANO...REAL...VAL VERDE. && 01/26
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 435 AM CDT SAT MAR 20 2010 TXZ171>173-183>194-202>209-217>225-228-211100- LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA- GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE- MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA- FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT- 435 AM CDT SAT MAR 20 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT... A COLD FRONT WILL PUSH STRONG THUNDERSTORMS ACROSS THE AREA THIS MORNING...BUT THEY ARE NOT EXPECTED TO REACH SEVERE LEVELS. RAINFALL OF ONE TO TWO INCHES IS POSSIBLE. A WIND ADVISORY IS IN EFFECT FROM 6 AM THROUGH 8 PM FOR NORTH TO NORTHWEST WINDS OF 25 TO 35 MPH WITH HIGHER GUSTS. A FREEZE WARNING IS IN EFFECT FOR THE HILL COUNTRY TONIGHT...WITH LOW TEMPERATURES FALLING TO NEAR 30. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... A FIRE WEATHER WATCH IS IN EFFECT FOR SUNDAY AFTERNOON AS CONTINUED GUSTY WEST WINDS AND LOW RELATIVE HUMIDITY WILL PRODUCE NEAR CRITICAL CONDITIONS FOR WILDFIRE SPREAD. SUNDAY NIGHT WILL BE COLD AGAIN...WITH ANOTHER FREEZE LIKELY ACROSS THE HILL COUNTRY AND ALONG THE I-35 CORRIDOR. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
729 AM CDT SAT MAR 20 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HAIL 1 N SAN ANTONIO 29.43N 98.49W
03/20/2010 E0.25 INCH BEXAR TX PUBLIC
PEA SIZE HAIL JUST SOUTH OF THE SAN ANTONIO
INTERNATIONAL AIRPORT.
&&
EVENT NUMBER EWX1000092
MCDONALDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
738 AM CDT SAT MAR 20 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0733 AM HAIL 1 S BASTROP 30.10N 97.31W
03/20/2010 E0.25 INCH BASTROP TX EMERGENCY MNGR
PEA SIZE HAIL REPORTED IN DOWNTOWN BASTROP.
&&
EVENT NUMBER EWX1000093
MCDONALDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
741 AM CDT SAT MAR 20 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0701 AM HAIL 2 N SAN ANTONIO 29.45N 98.49W
03/20/2010 E0.50 INCH BEXAR TX ASOS
PEA TO MARBLE SIZE HAIL AT THE SAN ANTONIO
INTERNATIONAL AIRPORT.
&&
EVENT NUMBER EWX1000094
MCDONALDSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 741 AM CDT SAT MAR 20 2010 TXZ193-194-207>209-220>225-201345- ATASCOSA-BASTROP-CALDWELL-DEWITT-FAYETTE-GONZALES-GUADALUPE-KARNES- LAVACA-LEE-WILSON- 741 AM CDT SAT MAR 20 2010 ...SIGNIFICANT WEATHER ADVISORY FOR KARNES...EASTERN ATASCOSA... DEWITT...WILSON...LAVACA...GONZALES...SOUTHEASTERN GUADALUPE... EASTERN CALDWELL...FAYETTE...BASTROP AND LEE COUNTIES UNTIL 845 AM CDT... AT 730 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED SHOWERS AND STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES WEST OF TANGLEWOOD TO 5 MILES SOUTHEAST OF WYLDWOOD TO 5 MILES SOUTHWEST OF KINGSBURY TO 7 MILES WEST OF FLORESVILLE...AND MOVING SOUTHEAST AT 35 MPH. PEA SIZE HAIL WAS REPORTED IN SAN ANTONIO AND BASTROP WITH THIS LINE OF STORMS. HAIL AROUND ONE-QUARTER INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS LINE OF STORMS. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE... BASTROP... FLORESVILLE... LULING... LEXINGTON... POTH... STOCKDALE... SMITHVILLE... KOSCIUSKO... KARNES CITY... GIDDINGS... JDS
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
742 AM CDT SAT MAR 20 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 AM HAIL 1 S MCQUEENEY 29.58N 98.04W
03/20/2010 E0.25 INCH GUADALUPE TX FIRE DEPT/RESCUE
STRONG WINDS AND PEA SIZE HAIL REPORTED IN MC QUEENEY.
&&
EVENT NUMBER EWX1000095
MCDONALDSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 849 AM CDT SAT MAR 20 2010 TXZ209-223-201430- FAYETTE-GONZALES- 849 AM CDT SAT MAR 20 2010 ...SIGNIFICANT WEATHER ADVISORY FOR GONZALES AND FAYETTE COUNTIES UNTIL 930 AM CDT... AT 842 AM CDT...AN AREA OF SHOWERS AND THUNDERSTORMS ALONG A FAST MOVING COLD FRONT WAS FROM NORTH OF LA GRANGE TO SOUTH OF GONZALES... MOVING TO THE SOUTHEAST AT 35 MPH. THESE SHOWERS AND THUNDERSTORMS WILL AFFECT PARTS OF GONZALES AND FAYETTE COUNTIES THROUGH 915 TO 930 AM. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN...FREQUENT DANGEROUS LIGHTNING...AND HAIL AROUND PEA SIZE TO A QUARTER OF AN INCH IN DIAMETER. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... FLATONIA... LA GRANGE... MULDOON... COLONY... FLOY... WEST POINT... O QUINN... WICCHESTER... FREYBURG... PLUM... THE HEAVY RAIN MAY FLOOD LOW LYING AREAS SUCH AS DITCHES...LOW WATER CROSSINGS AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ACROSS FLOODED ROADWAYS.
The Austin/San Antonio radar (KEWX), 99 km away, was scanning. The volume nearest the first event began at 13:51 UTC.
1 thunderstorm wind. Local standard time, as filed.
A thunderstorm produced wind gusts of approximately 50 kts which downed several trees and knocked down power lines in Cuero and blocked some rural roads.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2010Every state in 2010This day in weather historyWarnings in Texas, March 2010
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: 219926.