Tornadoes and Flash Flooding in Texas, March 19 to 20, 2012

Name: Tornadoes and Flash Flooding in Texas, March 19 to 20, 2012
Start: 2012-03-19T14:10
End: 2012-03-20T18:30
Location: Texas

March 19 to 20, 2012 · NWS EWX · 72 events in 23 counties and zones

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 1
Injuries: 4
Property damage: $502,000
Crop damage: None recorded
Events: 72

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.

What happened

The episode as NWS EWX wrote it up.

A deep upper level trough of low pressure and strong cold front moved into an area of deep boundary layer moisture. The system initially produced supercell thunderstorms which produced several tornadoes and large hail. There storms then transitioned into a quasi-linear convective system that produced heavy rainfall and flooding.

What forecasters said that day

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 19, 11:49 AM CST, 2 hours 21 minutes earlier.

Area forecast discussion, Mar 19, 11:49 AM CST, 2 hours 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1249 PM CDT MON MAR 19 2012

.AVIATION...
A PACIFIC FRONT WILL SLOWLY MOVE ACROSS SOUTH CENTRAL TEXAS THIS
AFTERNOON THROUGH TUESDAY MORNING. SHRA/TSRA CAN BE EXPECTED ALONG
THE FRONT WITH ISOLD TO SCT SHRA/TSRA AHEAD OF THE FRONT. GS/GR
AND DOWNBURST WINDS TO 50 TO 60 KTS ARE POSSIBLE IN AND NEAR THE
STRONGER TSRA. THE SHRA/TSRA WILL MOVE EAST OF OUR AREA LATE
TUESDAY MORNING. ANOTHER UPPER LEVEL DISTURBANCE WILL MOVE INTO
THE AREA LATER TUESDAY AFTERNOON TO GENERATE ANOTHER ROUND OF
SHRA/TSRA. AREAS OF MVFR TO LOW END VFR CIGS CAN BE EXPECTED ALONG
AND AHEAD OF THE FRONT WITH VFR CIGS AFTER THE FRONTAL PASSAGE.
AREAS OF IFR/MVFR VSBYS CAN BE EXPECTED IN THE HEAVIER SHRA/TSRA.
SELY WINDS 10 TO 22 KTS WITH GUSTS TO 32 KTS WILL PREVAIL AHEAD OF
THE FRONT AND NW TO N WINDS 5 TO 15 KTS WITH GUSTS TO 25 KTS WILL
PREVAIL BEHIND THE FRONT.

&&

.PREV DISCUSSION... /ISSUED 1158 AM CDT MON MAR 19 2012/

UPDATE...
..SEVERE WEATHER THREAT TO IMPACT SOUTH CENTRAL TEXAS THIS
AFTERNOON INTO THE EVENING HOURS...INCLUDING LARGE HAIL AND
DAMAGING GUSTS WINDS AND EVEN ISOLATED TORNADOES...WITH HEAVY
RAINS AND HIGH RISK OF FLASH FLOODING LATE TONIGHT INTO TUESDAY
MORNING...

A VIGOROUS UPPER LEVEL TROUGH OVER THE SOUTHWEST REGION IS
PROGGED TO MOVE EASTWARD THIS AFTERNOON AND EVENING AND OVER THE
WESTERN PORTION OF TEXAS. AT THE SURFACE...A PACIFIC COLD FRONT...
WHICH EXTENDS FROM OZONA NORTHEASTWARD TO SAN ANGELO TO ABILENE
TO OKLAHOMA CITY... IS EXPECTED TO MOVE ACROSS THE NORTHWESTERN
PORTION OF SOUTH CENTRAL TEXAS THIS EVENING CONTINUING ACROSS THE
REMAINDER OF SOUTH CENTRAL TEXAS OVERNIGHT AND TUESDAY MORNING.

AHEAD OF THE FRONTAL BOUNDARY...A MOIST AIRMASS AND UNSTABLE
CONDITIONS WILL PROMOTE SHOWERS AND THUNDERSTORMS TO DEVELOP IN
THE WARM SECTOR OF THE APPROACHING SYSTEM BY THIS AFTERNOON
CONTINUING THROUGH THIS EVENING. AT THAT TIME...DAYTIME HEATING
AND AVAILABLE MOISTURE WILL COMBINE WITH DEVELOPING STORMS TO BECOME
STRONG TO SEVERE IN NATURE WITH MAIN THREATS BEING LARGE HAIL AND
DAMAGING GUSTS WINDS AND ISOLATED TORNADOES. TIME FRAME FOR THESE
STORMS TO STRIKE OUR AREA COULD RUN FROM 6 PM THIS EVENING THROUGH
MIDNIGHT NORTH OF A FREDERICKSBURG TO SAN ANTONIO TO SEGUIN TO
BASTROP TO LEXINGTON LINE (WORD OF CAUTION...STRONG TO SEVERE
STORMS COULD STILL DEVELOP AND AFFECT AREAS NO INCLUDED IN THIS
DELINEATED AREA).

A SECOND ROUND OF SHOWERS AND STORMS WILL OCCUR AROUND 8 OR 9 PM
AS THE FRONTAL BOUNDARY MAKE ITS WAY ACROSS SOUTH CENTRAL
TEXAS...WITH MODERATE TO HEAVY RAINS AND STORMS ALONG AND EAST OF
THE SYSTEM. IT LOOKS LIKE THE I35 CORRIDOR WILL BE AFFECTED THE
MOST AROUND 10 PM THIS EVENING TO ABOUT 4 AM TUESDAY...WITH LINGERING
LIGHTEN STORMS THROUGH 7 AM OR 8 AM TUESDAY MORNING.

HEAVY RAINS AND FLASH FLOOD RISK BEGINS AT 6 PM THIS EVENING AS
STORMS AFFECT SOME AREAS WITH HEAVIEST RAINS AND FLASH FLASH
POTENTIAL OVER THE I 35 CORRIDOR INCLUDING THE SAN ANTONIO AND
AUSTIN METROPOLITAN AREAS COULD OCCUR FROM 10 PM THIS EVENING TO 4
AM EARLY TUESDAY MORNING. STORM RAINFALL TOTALS FOR THE NEXT 24
HOURS RANGE FROM ONE TO TWO INCHES OVER THE WESTERN HALF OF SOUTH
CENTRAL TEXAS WITH LESSER AMOUNTS OVER THE RIO GRANDE PLAINS WITH
TWO TO FIVE INCHES ALONG AND EAST OF HIGHWAY 281 WITH UP TO SEVEN
INCHES ACROSS ISOLATED AREAS.

NOW IS THE TIME TO CHECK YOUR SEVERE WEATHER PLAN AND PROCEDURES
AS THE STORM SYSTEM STILL HOURS AWAY BEFORE HEADING OUR WAY.

A FRIENDLY REMAINDER...FLASH FLOOD WATCH IS IN EFFECT FROM 6 PM
THIS EVENING THROUGH LATE TUESDAY MORNING ALONG AND EAST OF A
LINE FROM CASTELL TO KERRVILLE TO HONDO TO PEARSALL.

PREV DISCUSSION... /ISSUED 613 AM CDT MON MAR 19 2012/

AVIATION...
AN APPROACHING STRONG BROAD UPPER TROUGH AND COLD FRONT TO THE
WEST WILL INTERACT WITH VERY WARM MOIST GULF AIR ACROSS SOUTH
TEXAS. THE COMBINATION WILL RESULT IN SCATTERED TO NUMEROUS
SHRA/TSRA ACROSS S CENTRAL TX FOR THE NEXT 24 HOURS. SOME OF THE
STORMS WILL BE SEVERE THIS AFTERNOON WITH VERY LARGE HAIL AND
CONVECTIVE WIND GUSTS IN EXCESS OF 50 KNOTS.  MVFR CIGS PREVAILING
THIS MORNING AND TONIGHT...EXCEPT LIFTING TO VFR MOST AREAS THIS
AFTERNOON. IFR-LIFR CONDITIONS POSSIBLE IN THE SHRA+/TSRA+. S-SELY
WINDS OF 10-20 KNOTS PREVAILING...WITH GUSTS TO 25 KNOT. WINDS
SHIFTING TO NWLY 15-20 KNOTS BEHIND THE COLD FRONT/SQUALL LINE
BETWEEN 03Z-06Z THIS EVENING...AND KSSF KSAT KAUS BETWEEN 06Z-09Z
TUESDAY MORNING.

PREV DISCUSSION... /ISSUED 409 AM CDT MON MAR 19 2012/

DISCUSSION...
A DEEP UPPER LEVEL TROF CAN BE SEEN ON WV SAT IMAGERY MOVING
THROUGH THE WESTERN US THIS MORNING. 06Z SFC ANALYSIS A COLD FRONT
EXTENDING FROM A LOW OVER EASTERN MT DOWN THROUGH THE TX PANHANDLE
AND ACROSS W TX. THERE IS A SQUALL LINE AHEAD OF THE FRONT FROM
WESTERN OK TO NEAR MIDLAND. THIS SYSTEM WILL PROPAGATE EASTWARD
TODAY AND TUE AND BRING SIGNIFICANT WEATHER TO SOUTH CENTRAL
TEXAS. AS THE UPPER TROF MOVES TOWARD THE EAST IT WILL FORCE
CONVECTION ACROSS OUR CWA. MODELS ARE IN GOOD AGREEMENT ON SHORT
TERM MOVEMENT OF THE SYSTEM. ATMOSPHERE WILL BECOME MORE UNSTABLE
THROUGH THE DAY TODAY AND LOW LEVEL MOISTURE IS ALREADY IN PLACE.
MODEL CAPE FORECASTS ARE AS HIGH AS 2500 J/KG. IN ADDITION AS THE
TROF APPROACHES VERTICAL WIND SHEAR WILL INCREASE. SEVERE
THUNDERSTORMS ARE LIKELY THIS AFTERNOON AND EVENING AND SPC HAS
INCLUDED MOST OF OUR CWA IN A SLIGHT RISK AREA AND THE
NORTHEASTERN QUARTER OF THE AREA IN A MODERATE RISK. THE FULL
SPECTRUM OF SEVERE...TORNADOES...DAMAGING WIND...AND LARGE
HAIL...IS POSSIBLE. TIMING IS STILL UNCERTAIN...BUT 1PM TIL
MIDNIGHT LOOKS LIKELY. IN ADDITION TO THE SEVERE THREAT FLASH
FLOODING IS POSSIBLE AND WILL CONTINUE THE FLASH FLOOD WATCH FOR
TONIGHT THROUGH TUE MORNING. PW WILL GENERALLY BE BETWEEN ONE AND
ONE AND ONE HALF INCHES ACROSS THE EASTERN HALF OF THE AREA
TONIGHT AND TUE UNTIL NOON. HPC HAS OUR EASTERN HALF IN LOW TO MDT
RISK OF EXCESSIVE RAINFALL. WE SHOULD SEE RAINFALL TOTALS OF ONE
HALF TO TWO INCHES WESTERN HALF AND TWO TO FIVE INCHES EASTERN
HALF WITH ISOLATED AMOUNTS UP TO SEVEN INCHES. THE MAIN EVENT
SHOULD BE OVER BY TUE EVENING...BUT SHOWERS COULD LINGER UNTIL WED
MORNING. ONCE THIS SYSTEM PASSES...AN UPPER LEVEL WILL BUILD IN
AND DOMINATE THROUGH THE END OF THE PERIOD.

&&

.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY              81  59  72  53  69 /  60  90  60  40  20
AUSTIN BERGSTROM INTL AIRPORT  81  60  72  51  69 /  50  90  60  40  20
NEW BRAUNFELS MUNI AIRPORT     80  59  72  50  69 /  50  90  50  40  20
BURNET MUNI AIRPORT            79  55  69  49  66 /  50  90  50  40  20
DEL RIO INTL AIRPORT           86  56  70  46  71 /  30  60  10  20  10
GEORGETOWN MUNI AIRPORT        78  56  69  51  66 /  60  90  50  40  20
HONDO MUNI AIRPORT             84  57  74  47  70 /  40  80  30  30  20
SAN MARCOS MUNI AIRPORT        80  60  71  52  69 /  50  90  50  40  20
LA GRANGE - FAYETTE REGIONAL   79  66  72  54  71 /  50  80  70  40  20
SAN ANTONIO INTL AIRPORT       82  60  73  51  70 /  50  90  40  40  20
STINSON MUNI AIRPORT           83  61  73  52  70 /  40  80  40  40  20

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH FROM 6 PM CDT THIS EVENING THROUGH TUESDAY
MORNING FOR THE FOLLOWING COUNTIES: ATASCOSA...BANDERA...BASTROP...
BEXAR...BLANCO...BURNET...CALDWELL...COMAL...DE WITT...FAYETTE...
FRIO...GILLESPIE...GONZALES...GUADALUPE...HAYS...KARNES...KENDALL...
KERR...LAVACA...LEE...LLANO...MEDINA...TRAVIS...WILLIAMSON...WILSON.

&&

MESOSCALE/AVIATION...04
SYNOPTIC/GRIDS...17
PUBLIC SERVICE/DATA COLLECTION...30

Hazardous weather outlook, Mar 19, 4:41 AM CST, 9 hours 29 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
541 AM CDT MON MAR 19 2012

TXZ183>185-202-203-217-218-228-201000-
VAL VERDE-EDWARDS-REAL-KINNEY-UVALDE-MAVERICK-ZAVALA-DIMMIT-
541 AM CDT MON MAR 19 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

THERE IS A SLIGHT TO MODERATE RISK OF SEVERE THUNDERSTORMS THIS
AFTERNOON INTO TONIGHT AS AN INTENSE UPPER LEVEL STORM SYSTEM AND
COLD FRONT APPROACH FROM THE WEST. VERY LARGE HAIL...DAMAGING
WINDS AND TORNADOES ARE POSSIBLE. LOCALLY HEAVY RAINFALL TOTALS
NEAR 2 INCHES CAN BE EXPECTED.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAIN WILL BE
DECREASING FROM THE WEST TUESDAY MORNING.

OTHERWISE NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE REQUIRED THIS AFTERNOON INTO TUESDAY
MORNING.

TXZ171>173-186>194-204>209-219>225-201000-
LLANO-BURNET-WILLIAMSON-KERR-BANDERA-GILLESPIE-KENDALL-BLANCO-
HAYS-TRAVIS-BASTROP-LEE-MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-
FAYETTE-FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-
541 AM CDT MON MAR 19 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
INTO TONIGHT AS AN INTENSE UPPER LEVEL STORM SYSTEM AND COLD
FRONT APPROACH FROM THE WEST. VERY LARGE HAIL...DAMAGING WINDS AND
TORNADOES ARE POSSIBLE. A FLASH FLOOD WATCH IN EFFECT TONIGHT.
LOCALLY HEAVY RAINFALL TOTALS OF 5-7 INCHES ARE POSSIBLE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

A FLASH FLOOD WATCH IS IN EFFECT THROUGH NOON TUESDAY. SHOWERS AND
THUNDERSTORMS WILL BE DECREASING FROM THE WEST LATE TUESDAY.

OTHERWISE NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE REQUIRED THIS AFTERNOON INTO TUESDAY
MORNING.

In the hours before

Special weather statement, Mar 19, 1:25 PM CST, 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
225 PM CDT MON MAR 19 2012

TXZ183-192015-
VAL VERDE-
225 PM CDT MON MAR 19 2012

...SIGNIFICANT WEATHER ADVISORY FOR VAL VERDE COUNTY UNTIL 315 PM
CDT...

AT 223 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 17 MILES SOUTHWEST OF JUNO...MOVING NORTHEAST AT
30 MPH.

HAIL UP TO THE SIZE OF NICKELS IS EXPECTED WITH THIS STORM...ALONG
WITH FREQUENT DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  JUNO...
  BAKERS CROSSING...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

The radar

The Laughlin AFB radar (KDFX), 129 km away, was scanning. The volume nearest the first event began at 20:11 UTC.

Open the radar archive at this moment

Event by event

37 flash flood, 28 hail, 6 tornado, 1 funnel cloud. Local standard time, as filed.

Hail, Val Verde

When: March 19, 2:10 PM CST
Where: Val Verde County, 12.2 mi NE of Juno
Measured: 1 in hail
Reported by: CoCoRaHS
Coordinates: 30.270, -100.970

Hail, Uvalde

When: March 19, 4:32 PM CST
Where: Uvalde County, 4.15 mi S of Knippa
Measured: 1.75 in hail
Reported by: Emergency Manager
Coordinates: 29.240, -99.630

Hail, Uvalde

When: March 19, 5:12 PM CST
Where: Uvalde County, 3 mi E of Utopia
Measured: 1.75 in hail
Reported by: COOP Observer
Coordinates: 29.620, -99.480

A thunderstorm produced hail from quarter to golf ball size in Utopia.

Hail, Frio

When: March 19, 5:25 PM CST
Where: Frio County, 3.19 mi NE of Dilley
Measured: 1.75 in hail
Reported by: Public
Coordinates: 28.700, -99.130

Hail, Real

When: March 19, 5:35 PM CST
Where: Real County, 1.51 mi NNW of Leakey
Measured: 1.75 in hail
Reported by: Law Enforcement
Coordinates: 29.750, -99.760

Hail, Frio

When: March 19, 5:39 PM CST
Where: Frio County, 6.44 mi ESE of Frio Town
Measured: 1.75 in hail
Reported by: Public
Coordinates: 28.970, -99.230

Hail, Frio

When: March 19, 5:46 PM CST
Where: Frio County, 1.51 mi SSW of Pearsall
Measured: 1.75 in hail
Property damage: $2,000
Reported by: Public
Coordinates: 28.860, -99.090

A thunderstorm produced golf ball size hail which damaged a pickup truck on FM1582 near Pearsall.

Hail, Kerr

When: March 19, 5:54 PM CST
Where: Kerr County, 3.45 mi N of Mountain Home
Measured: 1 in hail
Reported by: Public
Coordinates: 30.220, -99.370

Hail, Real

When: March 19, 6:00 PM CST
Where: Real County, 1.51 mi NNW of Leakey
Measured: 1.75 in hail
Reported by: Department of Highways
Coordinates: 29.750, -99.760

Hail, Bandera

When: March 19, 6:12 PM CST
Where: Bandera County, 14.04 mi WNW of Vanderpool
Measured: 1.75 in hail
Reported by: Park/Forest Service
Coordinates: 29.840, -99.590

Hail, Gillespie

When: March 19, 6:15 PM CST
Where: Gillespie County, 3.16 mi SW of Harper
Measured: 0.75 in hail
Reported by: CoCoRaHS
Coordinates: 30.270, -99.290

Hail, Frio

When: March 19, 6:26 PM CST
Where: Frio County, Dilley
Measured: 1.75 in hail
Reported by: Public
Coordinates: 28.670, -99.170

Tornado, Medina

When: March 19, 6:50 PM CST to 7:00 PM CST
Where: Medina County, 1.21 mi NW of Devine Muni Arpt to 3.25 mi NNW of Devine
Rating: EF2
Path length: 3.5 mi
Path width: 440 yd
Reported by: NWS Storm Survey
Coordinates: 29.144, -98.942

A supercell thunderstorm moved through southeastern Medina County and into southwestern Bexar County and produced three tornadoes. The first tornado touched down in Devine, the second in Natalia, and the third in Bexar County. The tornadoes in Medina County destroyed 14 homes, caused major damage on 11 others, and minor damage on seven. Ten people were injured by these storms in Medina County.

Hail, Real

When: March 19, 7:00 PM CST
Where: Real County, 1.51 mi NNW of Leakey
Measured: 1.75 in hail
Reported by: Department of Highways
Coordinates: 29.750, -99.760

A thunderstorm produced pea to golf ball size hail near Leakey.

Tornado, Medina

When: March 19, 7:05 PM CST to 7:20 PM CST
Where: Medina County, 1.75 mi E of Natalia to 1.33 mi W of Pearson
Rating: EF1
Path length: 7 mi
Path width: 50 yd
Reported by: NWS Storm Survey
Coordinates: 29.182, -98.841

Hail, Kerr

When: March 19, 7:10 PM CST
Where: Kerr County, 2.76 mi S of Camp Scenic
Measured: 1.75 in hail
Reported by: CoCoRaHS
Coordinates: 30.080, -99.280

A thunderstorm produced quarter to golf ball size hail between Hunt and Ingram.

Hail, Kerr

When: March 19, 7:15 PM CST
Where: Kerr County, 6.47 mi SSW of Ingram
Measured: 1.75 in hail
Reported by: Broadcast Media
Coordinates: 29.990, -99.260

A thunderstorm produced golf ball size hail near Upper Turtle Creek southwest of Kerrville.

Hail, Kerr

When: March 19, 7:15 PM CST
Where: Kerr County, 3.89 mi SSW of Hunt
Measured: 2.75 in hail
Reported by: CoCoRaHS
Coordinates: 30.020, -99.360

A thunderstorm produced hail from ping pong ball to baseball size south of Hunt.

Tornado, Bexar

When: March 19, 7:22 PM CST to 7:32 PM CST
Where: Bexar County, 2.54 mi SW of Atascosa to 4.49 mi NW of Atascosa
Rating: EF2
Path length: 5 mi
Path width: 100 yd
Injuries: 4 direct, 0 indirect
Reported by: NWS Storm Survey
Coordinates: 29.245, -98.761

A supercell thunderstorm moved through southeastern Medina County and into southwestern Bexar County and produced three tornadoes. The first tornado touched down in Devine, the second in Natalia, and the third in Bexar County. The tornado in Bexar County destroyed eight homes (four single family and four mobile), caused major damage on five others, and minor damage on two more. Four people were injured by these storms in Bexar County.

Hail, Kerr

When: March 19, 7:28 PM CST
Where: Kerr County, 0.6 mi W of Ingram
Measured: 1 in hail
Reported by: COOP Observer
Coordinates: 30.080, -99.240

Hail, Kerr

When: March 19, 7:29 PM CST
Where: Kerr County, 2.49 mi ENE of Hunt
Measured: 1.75 in hail
Reported by: Public
Coordinates: 30.080, -99.290

Hail, Kerr

When: March 19, 7:30 PM CST
Where: Kerr County, 0.91 mi SW of Ingram
Measured: 1.75 in hail
Reported by: COOP Observer
Coordinates: 30.070, -99.240

Hail, Uvalde

When: March 19, 8:05 PM CST
Where: Uvalde County, 3.45 mi S of Concan
Measured: 1.25 in hail
Reported by: Emergency Manager
Coordinates: 29.470, -99.730

Hail, Uvalde

When: March 19, 8:20 PM CST
Where: Uvalde County, Utopia
Measured: 2.5 in hail
Reported by: Emergency Manager
Coordinates: 29.620, -99.530

Hail, Bandera

When: March 19, 9:00 PM CST
Where: Bandera County, 13.58 mi NW of Vanderpool
Measured: 1.75 in hail
Reported by: COOP Observer
Coordinates: 29.880, -99.550

Hail, Uvalde

When: March 19, 9:00 PM CST
Where: Uvalde County, 2.4 mi W of Utopia
Measured: 1.75 in hail
Reported by: NWS Employee
Coordinates: 29.620, -99.570

A thunderstorm produced hail from pea to golf ball size west of Utopia.

Flash Flood, Gillespie

When: March 19, 9:00 PM CST
Where: Gillespie County, 4.78 mi SSW of Tivydale to 7.3 mi NNW of Tivydale
Cause: Heavy Rain
Property damage: $500,000
Reported by: CoCoRaHS
Coordinates: 30.170, -99.190

Thunderstorms produced heavy rain that caused flash flooding. This closed roads south of Tivydale.

Flash Flood, Kerr

When: March 19, 9:30 PM CST
Where: Kerr County, 1.92 mi WNW of Kerrville to 2.71 mi ENE of Ingram
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 30.060, -99.160

Thunderstorms produced heavy rain that caused flash flooding of low water crossings and closed FM1338 from Highway 27 north to the Gillespie County line.

Hail, Gillespie

When: March 19, 9:34 PM CST
Where: Gillespie County, 3.01 mi NNW of Coin City
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 30.240, -98.840

Hail, Kerr

When: March 19, 9:34 PM CST to 9:40 PM CST
Where: Kerr County, 3.85 mi WNW of Camp Verde
Measured: 1.75 in hail
Reported by: Public
Coordinates: 29.900, -99.160

Thunderstorms produced hail from pea to golf ball size. Hail fell for about an hour and was mostly pea to dime size.

Hail, Gillespie

When: March 19, 9:41 PM CST
Where: Gillespie County, 0.91 mi SE of Stonewall
Measured: 1.75 in hail
Reported by: Public
Coordinates: 30.240, -98.660

A broadcast media partner relayed a report of golf ball size hail in Stonewall.

Hail, Gillespie

When: March 19, 9:41 PM CST
Where: Gillespie County, 4.2 mi NW of Blumenthal
Measured: 2 in hail
Reported by: Trained Spotter
Coordinates: 30.270, -98.770

Flash Flood, Kerr

When: March 19, 10:20 PM CST
Where: Kerr County, 0.6 mi W of Ingram to 0.72 mi SSW of Ingram
Cause: Heavy Rain
Reported by: Fire Department/Rescue
Coordinates: 30.080, -99.240

Thunderstorms produced heavy rain that caused flash flooding and closed Highway 39 from Ingram to Hunt and several other low water crossings in the county.

Flash Flood, Bandera

When: March 19, 10:57 PM CST
Where: Bandera County, 3.3 mi WSW of Medina Circle R Arpt to 9.37 mi S of Medina A Bar A Arpt
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 29.800, -99.320

Thunderstorms produced heavy rain that caused flash flooding of low water crossings and closed FM337 from Medina to Vanderpool.

Flash Flood, Kerr

When: March 19, 11:01 PM CST
Where: Kerr County, 4.53 mi SW of (Erv)schreiner Fld K to 2.62 mi SW of Legion
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 29.940, -99.140

Thunderstorms produced heavy rain that caused flash flooding of low water crossings and closed Ranch Road 2771 near Kerrville.

Flash Flood, Kerr

When: March 19, 11:15 PM CST
Where: Kerr County, 6.34 mi WNW of Camp Verde to 6.03 mi WNW of Camp Verde
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 29.910, -99.200

Thunderstorms produced heavy rain that caused flash flooding of low water crossings and closed Highway 16 south of FM1273 between Kerrville and Medina.

Flash Flood, Burnet

When: March 19, 11:30 PM CST
Where: Burnet County, 5.74 mi WNW of Fariland to 8.31 mi WNW of Fariland
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 30.660, -98.370

Thunderstorms produced heavy rain that caused flash flooding of low water crossings and closed FM2342 from Park Road 4 to Camp Buckner.

Tornado, Bexar

When: March 19, 11:55 PM CST to 11:57 PM CST
Where: Bexar County, 1.5 mi NE of Longhorn to 1.58 mi ENE of Longhorn
Rating: EF0
Path length: 0.75 mi
Path width: 10 yd
Reported by: NWS Storm Survey
Coordinates: 29.535, -98.412

Minor damage near the San Antonio post office on Perrin Beitel Rd was caused by a small tornado that formed along the leading edge of a large cluster of storms pushing east in the early morning hours of March 20 (CDT). This cluster of storms interacted with an outflow boundary causing a few brief tornadoes. In addition to the damage at the post office, one home sustained major damage and 10 others were left with minor damage. Seventy-three other homes were affected by the tornado with other property damage; either debris on the property or damage to fences and plants.

Tornado, Bexar

When: March 19, 11:59 PM CST to March 20, 12:00 AM CST
Where: Bexar County, 1.26 mi N of Kirby
Rating: EF0
Path length: 0.25 mi
Path width: 10 yd
Reported by: NWS Storm Survey
Coordinates: 29.488, -98.377

A second small tornado formed along the leading edge of a large cluster of storms pushing east through northeastern San Antonio in the early morning hours of March 20 (CDT). One home on Castle Hunt Dr. received minor damage and 25 other homes on Castle Hunt Dr. and Castle Run were affected either with debris on the property or damage to fences or plants.

Flash Flood, Bandera

When: March 20, 12:00 AM CST
Where: Bandera County, 0.69 mi S of Bandera to 2.46 mi SSW of Bandera
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 29.710, -99.070

Thunderstorms produced heavy rain that caused flash flooding and closed Highway 173 between Bandera and Devine.

Flash Flood, Bandera

When: March 20, 12:06 AM CST
Where: Bandera County, 3 mi W of Tarpley to 4.5 mi SW of Vanderpool
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 29.630, -99.330

Thunderstorms produced heavy rain that caused flash flooding of low water crossings and closed FM470 from Tarpley to Utopia.

Flash Flood, Burnet

When: March 20, 12:10 AM CST
Where: Burnet County, 2.03 mi N of Lake Victor to 4.96 mi WNW of Lake Victor
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 30.929, -98.199

Thunderstorms produced heavy rain that caused flash flooding of low water crossings and closed FM2340 east of US281 north of Burnet.

Flash Flood, Bandera

When: March 20, 12:10 AM CST
Where: Bandera County, 1.38 mi ENE of Medina Circle R Arpt to 2.17 mi NE of Bluff
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 29.830, -99.250

Thunderstorms produced heavy rain that caused flash flooding and closed Highway 16 from the Kerr County line south to FM2828 near Medina.

Hail, Dimmit

When: March 20, 12:20 AM CST
Where: Dimmit County, 0.61 mi W of Carrizo Spgs
Measured: 1 in hail
Reported by: CoCoRaHS
Coordinates: 28.520, -99.860

Flash Flood, Bandera

When: March 20, 12:24 AM CST
Where: Bandera County, 12.72 mi SW of Vanderpool to 10.11 mi W of Vanderpool
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 29.640, -99.550

Thunderstorms produced heavy rain that caused flash flooding of low water crossings and closed Ranch Road 187 from Vanderpool south to Ranch Road 470.

Flash Flood, Burnet

When: March 20, 12:30 AM CST
Where: Burnet County, 1.26 mi SSW of Marble Falls to 0.54 mi SW of Marble Falls
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 30.553, -98.278

Thunderstorms produced heavy rain that caused flash flooding of low water crossings closing FM2147 east of US281.

Flash Flood, Burnet

When: March 20, 12:32 AM CST
Where: Burnet County, 0.91 mi NW of Bertram to 1.58 mi NW of Bertram
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 30.760, -98.060

Thunderstorms produced heavy rain that caused flash flooding of low crossings closing FM1174 north of Highway 29 outside of Bertram.

Flash Flood, Burnet

When: March 20, 12:41 AM CST
Where: Burnet County, 2.16 mi SSE of Buchanan Lake to 2.8 mi SSE of Lake Victor
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 30.790, -98.220

Thunderstorms produced heavy rain that caused flash flooding of low water crossings closing FM963 from Burnet north to Bethel.

Flash Flood, Burnet

When: March 20, 12:42 AM CST
Where: Burnet County, 1.37 mi ENE of Bertram to 2.1 mi WSW of Mahomet
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 30.760, -98.030

Thunderstorms produced heavy rain that caused flash flooding of low water crossings closing FM243 from Highway 29 to US183 between Bertram and Mahomet.

Flash Flood, Llano

When: March 20, 12:55 AM CST
Where: Llano County, 6.37 mi WNW of Oxford to 8.02 mi WSW of Oxford
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 30.650, -98.790

Thunderstorms produced heavy rain that caused flash flooding of low water crossings closing Ranch Road 2323 between Flag Creek and Hickory Creek southwest of Llano.

Flash Flood, Burnet

When: March 20, 1:00 AM CST
Where: Burnet County, 1.91 mi ENE of Buchanan Lake to 4.28 mi N of Burnet Craddock Arpt
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 30.830, -98.200

Thunderstorms produced heavy rain that caused flash flooding closing numerous roads in Burnet including FM963.

Flash Flood, Kendall

When: March 20, 1:00 AM CST
Where: Kendall County, 1.83 mi NE of Boerne to 2.34 mi ENE of Boerne
Cause: Heavy Rain
Reported by: CoCoRaHS
Coordinates: 29.800, -98.710

Thunderstorms produced heavy rain that caused flash flooding of some residential streets in Boerne.

Flash Flood, Caldwell

When: March 20, 1:00 AM CST
Where: Caldwell County, 1.51 mi NNW of Maxwell to 3.05 mi N of Maxwell
Cause: Heavy Rain
Reported by: CoCoRaHS
Coordinates: 29.900, -97.790

Thunderstorms produced heavy rain that caused flash flooding of several roads and bridges in the vicinity of Misty Lane (CR229) between San Marcos and Lockhart.

Flash Flood, Travis

When: March 20, 1:07 AM CST
Where: Travis County, 0.52 mi WNW of Oak Hill to 0.74 mi NW of Oak Hill
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 30.233, -97.858

Thunderstorms produced heavy rain that caused flash flooding of multiple roads in Austin including Joe Tanner Lane and Spicewood Springs Road.

Flash Flood, Bexar

When: March 20, 1:12 AM CST
Where: Bexar County, 2.03 mi N of Fratt to 2.39 mi N of Fratt
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 29.549, -98.571

Thunderstorms produced heavy rain that caused flash flooding of numerous roads in San Antonio including Vance Jackson Road at Sunburst Lane, Orsinger Lane at Sandstone Drive, and Sleepy Hollow at Sunburst Lane.

Flash Flood, Llano

When: March 20, 1:30 AM CST
Where: Llano County, 1.78 mi E of Llano Muni Arpt to 2.24 mi NNW of Lone Grove
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 30.780, -98.640

Thunderstorms produced heavy rain that caused flash flooding of low water crossings closing Ranch Road 2241 from Highway 29 to Bluffton Store.

Funnel Cloud, De Witt

When: March 20, 2:00 AM CST
Where: De Witt County, 2.75 mi SW of Nordheim
Reported by: Law Enforcement
Coordinates: 28.890, -97.630

A law enforcement officer spotted a funnel cloud near Meyersville.

Flash Flood, Burnet

When: March 20, 2:04 AM CST
Where: Burnet County, 1.19 mi E of Mahomet to 0.54 mi ESE of Mahomet
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 30.820, -97.930

Thunderstorms produced heavy rain and flash flooding that led to a swift water rescue in northeastern Burnet County near Mahomet.

Flash Flood, Guadalupe

When: March 20, 2:30 AM CST
Where: Guadalupe County, 4.09 mi SSW of New Berlin to 1.27 mi N of Seguin
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 29.418, -98.131

Thunderstorms produced heavy rain that caused flash flooding closing numerous roads in Guadalupe County including Weir Ln, Highway 123 at Cordova Rd, Zuehl Crossing at Cibolo Creek, and Redwood Rd.

Flash Flood, Llano

When: March 20, 3:00 AM CST
Where: Llano County, 4.16 mi W of Kingsland Williamsar to 4 mi W of Kingsland Williamsar
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 30.680, -98.490

Thunderstorms produced heavy rain that caused flash flooding closing FM3404 (Slab Rd) in Kingsland.

Flash Flood, Burnet

When: March 20, 3:00 AM CST
Where: Burnet County, 1.91 mi WSW of Fariland to 2.1 mi WSW of Fariland
Cause: Heavy Rain
Reported by: CoCoRaHS
Coordinates: 30.620, -98.310

Thunderstorms produced heavy rain that caused flash flooding closing Toby Dr just off FM1980 northwest of Marble Falls.

Flash Flood, Bastrop

When: March 20, 3:00 AM CST
Where: Bastrop County, 0.91 mi NE of Bastrop to 3.83 mi W of Bastrop
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 30.130, -97.310

Thunderstorms produced heavy rain that caused flash flooding of numerous low water crossings around Bastrop.

Tornado, Karnes

When: March 20, 3:05 AM CST to 3:06 AM CST
Where: Karnes County, 1.07 mi W of Runge to 0.93 mi W of Runge
Rating: EF0
Path length: 0.25 mi
Path width: 30 yd
Reported by: NWS Storm Survey
Coordinates: 28.881, -97.718

A small weak EF0 tornado formed along the leading edge of a large cluster of storms in Runge, crossing a few neighborhood streets. Most damage was confined to house roofs, outbuildings, and trees.

Flash Flood, Comal

When: March 20, 3:18 AM CST
Where: Comal County, 2.05 mi SW of New Braunfels Mun Ar to 4.46 mi N of Gruene
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 29.679, -98.055

Thunderstorms produced heavy rain that caused flash flooding closing numerous roads across New Braunfels.

Flash Flood, Gonzales

When: March 20, 3:30 AM CST
Where: Gonzales County, 0.69 mi S of Saturn to 1.08 mi ESE of Waelder
Cause: Heavy Rain
Reported by: CoCoRaHS
Coordinates: 29.520, -97.380

Thunderstorms produced heavy rain that caused flash flooding closing FM532 and FM1680. Denton Creek was spilling out of its banks.

Flash Flood, Lee

When: March 20, 3:45 AM CST
Where: Lee County, 1.92 mi WSW of Tanglewood to 4.24 mi NW of Blue
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 30.490, -97.010

Thunderstorms produced heavy rain that caused flash flooding closing several low water crossings in Lee County.

Flash Flood, Bastrop

When: March 20, 4:00 AM CST
Where: Bastrop County, 0.69 mi N of Cedar Creek to 2.45 mi NNW of Cedar Creek
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 30.090, -97.500

Thunderstorms produced heavy rain that caused flash flooding closing Jenkins Rd and FM535 near Cedar Creek.

Flash Flood, Bastrop

When: March 20, 5:45 AM CST
Where: Bastrop County, 7.3 mi ESE of Smithville to 2.68 mi NE of Elgin
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 29.970, -97.053

Thunderstorms produced heavy rain that caused flash flooding closing Potato Smith Rd in Elgin, Caldwell Ln in Smithville, and several other low water crossings in the county.

Flash Flood, Guadalupe

When: March 20, 6:55 AM CST
Where: Guadalupe County, 2.83 mi NNE of Clear Spg to 2.3 mi N of Clear Spg
Cause: Heavy Rain
Reported by: NWS Employee
Coordinates: 29.710, -98.060

Thunderstorms produced heavy rain that caused flash flooding of a low water crossing closing Saur Ln in New Braunfels.

Flash Flood, Gonzales

When: March 20, 6:57 AM CST
Where: Gonzales County, 2.25 mi N of Dilworth to 1.94 mi N of Dilworth
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 29.552, -97.297

Thunderstorms produced heavy rain that caused flash flooding of low water crossings closing FM532 at Peach Creek.

Flash Flood, Lavaca

When: March 20, 7:25 AM CST
Where: Lavaca County, 1.05 mi SSE of Moravia to 0.89 mi ESE of Kamensky
Cause: Heavy Rain
Reported by: Department of Highways
Coordinates: 29.566, -96.973

Thunderstorms produced heavy rain that caused flash flooding of low water crossings closing FM957 north of Highway 77 out of Hallettsville.

Flash Flood, Lee

When: March 20, 6:30 PM CST
Where: Lee County, 1.13 mi S of Fedor to 1.01 mi S of Fedor
Cause: Heavy Rain
Deaths: 1 direct, 0 indirect
Reported by: Law Enforcement
Coordinates: 30.304, -97.052

Thunderstorms produced heavy rain that caused flash flooding of FM 1624 at West Yegua Creek near Fedor where a vehicle was swept off the road by flood waters. The driver of the vehicle was found dead.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Age	Sex	Where	Kind
Flash Flood, Lee	2012-03-20	45	Female	Vehicle/Towed Trailer	Direct

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Tornado: A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Funnel Cloud: A rotating column of cloud extending from a thunderstorm that did not reach the ground.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Texas in 2012 Every state in 2012 This day in weather history The tornado archive for Texas, 2012 Warnings in Texas, March 2012

Sources

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: 366800, 366823, 367662, 367663, 367664, 367665, 367666, 367667, 367668, 367669, 367670, 367672, 368119, 367673, 368118, 367674, 367675, 367676, 367954, 367677, 367678, 367679, 367680, 367681, 367682, 367683, 367685, 367688, 367689, 367690, 367691, 367692, 367693, 367694, 367695, 367702, 367705, 368120, 368121, 367723, and more.