Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 15, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 19, 2002, 8:33 PM CST for Bastrop County, Caldwell County, Travis County, Texas. It was in force for 57 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 19, 2002, 8:33 PM CST (02:33 UTC)
- Expired
- Mar 19, 2002, 9:30 PM CST
- In force
- 57 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties Bastrop County, TX, Caldwell County, TX, Travis County, TX
The radar
The Austin/San Antonio radar (KEWX), 52 km from the middle of the area, began a volume at 02:35 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 19, 8:45 PM CST | Thunderstorm Wind | Countywide, TX | Trees were blown down in an west-southwest to east-northeast direction by the derecho that had begun in eastern Bexar County and had consistently continued through Guadalupe County. Only very minor, spotty damage was reported to roofs of homes and windows of |
| Mar 19, 9:00 PM CST | Thunderstorm Wind | Countywide, TX | The widespread derecho continued to blow down trees in an west-southwest to east-northeast direction, continuing the damage sustained from eastern Bexar County through Guadalupe and Caldwell Counties. Only spotty damage was indicated to roofs of homes and win |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 19, 7:45 PM CST | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 2.6 hours before the alert went out and 264 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 932 J/kg
- Mixed-layer CIN
- -500 J/kg
- Mixed-layer LCL
- 1142 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS54 KEWX 200233
SVRSAT
TXC021-055-453-200330-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
833 PM CST TUE MAR 19 2002
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
TRAVIS
BASTROP
CALDWELL
* UNTIL 930 PM CST
* AT 833 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 10 MILES SOUTH OF ONION CREEK...OR ABOUT 11
MILES NORTHEAST OF SAN MARCOS...MOVING NORTHEAST AT 35 MPH.
* THE SEVERE THUNDERSTORM WILL BE...
5 MILES SOUTHEAST OF GARFIELD AT 900 PM
OVER WYLDWOOD AT 905 PM
7 MILES NORTHWEST OF BASTROP AT 915 PM
NATIONAL WEATHER DOPPLER RADAR ESTIMATES WINDS OF 60 TO 70 MPH WITH
THIS STORM
A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A
PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM IF A TORNADO IS SPOTTED.
LAT...LON 3019 9793 3004 9773 2990 9786 2972 9769
3009 9721 3046 9762What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Mar 19, 8:21 PM CST, 12 minutes earlier.
Area forecast discussion, Mar 19, 8:21 PM CST, 12 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
821 PM CST TUE MAR 19 2002
SEVERE WEATHER ONGOING ACROSS PARTS OF THE CWA AT THIS TIME. HAVE
SENT AN UPDATE TO REFLECT THE NEW SEVERE THUNDERSTORM WATCH UNTIL
MIDNIGHT. OTHERWISE...LITTLE OR NO CHANGE TO ONGOING FORECAST.
CP/MF/NR/MB/DC/JB.
.EWX...TORNADO WATCH CENTRAL AND WEST UNTIL 03Z
SEVERE THUNDERSTORM WATCH EAST UNTIL 06ZIn the hours before
Special weather statement, Mar 19, 3:00 PM CST, 5 hours 33 minutes before
TXZ171>173-183>194-202>209-217>225-228-192300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 300 PM CST TUE MAR 19 2002 ...A SEVERE THUNDERSTORMS WATCH IS IN EFFECT UNTIL 6PM THIS EVENING FOR PORTIONS OF THE HILL COUNTRY AND RIO GRANDE PLAINS REGION... THE NATIONAL WEATHER SERVICE FORECAST FOR THIS AFTERNOON AND TONIGHT HAS A GOOD CHANCE OF THUNDERSTORMS...SOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS. A SEVERE THUNDERSTORMS WATCH IS IN EFFECT FOR THE FOLLOWING COUNTIES...BANDERA...EDWARDS...GILLESPIE...KERR...KINNEY...LLANO... MAVERICK...REAL...UVALDE...VAL VERDE. THIS INCLUDES THE CITIES OF...BANDERA...BRACKETTVILLE...DEL RIO... EAGLE PASS...FREDERICKSBURG...KERRVILLE...LEAKEY...LLANO... ROCKSPRINGS...UVALDE AN APPROACHING UPPER-LEVEL TROUGH OF LOW PRESSURE...COUPLED WITH ABUNDANT LOW-LEVEL MOISTURE...WILL TRIGGER SCATTERED THUNDERSTORMS THAT WILL CONTINUE THROUGH THE NIGHT. SOME OF THE STORMS COULD BECOME SEVERE...ESPECIALLY ACROSS THE HILL COUNTRY AND ADJACENT AREAS OF SOUTH CENTRAL TEXAS...WITH LARGE HAIL...DAMAGING WINDS...FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL OCCURRING. ALTHOUGH THE MAIN FOCUS FOR SEVERE WEATHER WILL BE TO THE NORTH OF SOUTH CENTRAL TEXAS...SPOTTER NETWORKS MAY NEED TO BE ACTIVATED IF CONDITIONS WARRANT. A COLD FRONT WILL PUSH INTO AND THROUGH THE REGION THIS EVENING... WITH COOLER AND DRIER AIR SPREADING OVER THE HILL COUNTRY AND SOUTH CENTRAL TEXAS WEDNESDAY. FOR INFORMATION ON WEATHER THREATS IN SURROUNDING AREAS...PLEASE REFER TO OUTLOOKS FROM OFFICES IN MIDLAND/ODESSA...SAN ANGELO... FORT WORTH...HOUSTON/GALVESTON AND CORPUS CHRISTI.
Special weather statement, Mar 19, 4:00 PM CST, 4 hours 33 minutes before
TXZ171>173-183>194-202>209-217>225-228-200000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 400 PM CST TUE MAR 19 2002 ...A TORNADO WATCH IS IN EFFECT UNTIL 9PM THIS EVENING FOR ALL OF THE TEXAS HILL COUNTRY AND MOST OF SOUTH CENTRAL TEXAS... THE NATIONAL WEATHER SERVICE FORECAST FOR TONIGHT HAS A GOOD CHANCE OF THUNDERSTORMS...SOME SEVERE WITH TORNADOS...LARGE HAIL AND DAMAGING WINDS. A TORNADO WATCH IS IN EFFECT FOR THE FOLLOWING COUNTIES... ATASCOSA...BANDERA...BASTROP...BEXAR...BLANCO...BURNET...CALDWELL... COMAL...DIMMIT...EDWARDS...FRIO...GILLESPIE...GUADALUPE...HAYS... KENDALL...KERR...KINNEY...LLANO...MAVERICK...MEDINA...REAL... TRAVIS...UVALDE...VAL VERDE...WILLIAMSON...WILSON...ZAVALA. THIS INCLUDES THE CITIES OF...AUSTIN...BANDERA...BASTROP... BOERNE...BRACKETTVILLE...BURNET...CARRIZO SPRINGS...CRYSTAL CITY... DEL RIO...EAGLE PASS...FLORESVILLE...FREDERICKSBURG...GEORGETOWN... HONDO...JOHNSON CITY...JOURDANTON...KERRVILLE...LEAKEY...LLANO... LOCKHART...NEW BRAUNFELS...PEARSALL...ROCKSPRINGS...SAN ANTONIO...SAN MARCOS...SEGUIN...UVALDE AN APPROACHING UPPER-LEVEL TROUGH OF LOW PRESSURE...COUPLED WITH ABUNDANT LOW-LEVEL MOISTURE...WILL TRIGGER SCATTERED THUNDERSTORMS THAT WILL CONTINUE THROUGH THE NIGHT. SOME OF THE STORMS ARE EXPECTED TO BECOME SEVERE...ESPECIALLY ACROSS THE HILL COUNTRY AND ADJACENT AREAS OF SOUTH CENTRAL TEXAS...TORNADOES...LARGE HAIL... DAMAGING WINDS...FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL OCCURRING. SPOTTER NETWORKS MAY NEED TO BE ACTIVATED. A COLD FRONT WILL PUSH INTO AND THROUGH THE REGION THIS EVENING... WITH COOLER AND DRIER AIR SPREADING OVER THE HILL COUNTRY AND SOUTH CENTRAL TEXAS WEDNESDAY. FOR INFORMATION ON WEATHER THREATS IN SURROUNDING AREAS...PLEASE REFER TO OUTLOOKS FROM OFFICES IN MIDLAND/ODESSA...SAN ANGELO... FORT WORTH...HOUSTON/GALVESTON AND CORPUS CHRISTI.
Local storm report, Mar 19, 7:27 PM CST, 1 hour 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
727 PM CST TUE MAR 19 2002
TIME(CST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0659 PM HONDO TX 80 MPH TSTM WIND GUST
03/19/02 MEDINA
0707 PM HONDO TX 2.75 INCH HAIL
03/19/02 MEDINA REPORTED BY CO-OP OBSERVER
DCLocal storm report, Mar 19, 8:24 PM CST, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
824 PM CST TUE MAR 19 2002
TIME(CST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0730 PM PEARSALL TX 1.75 INCH HAIL
03/19/02 FRIO REPORTED BY LAW
ENFORCEMENT
0733 PM MCNAIR MIDDLE SCHOOL
SAN ANTONIO TX 63 MPH TSTM WIND GUST
03/19/02 BEXAR REPORTED BY SCHOOL
NETWORK
0748 PM BROOKS AFB TX 1.00 INCH HAIL
03/19/02 BEXAR REPORTED BY MEDIA
0750 PM LEON VALLEY
E ROAD AND LOOP 410 LEON VALLEY TX 2.00 INCH HAIL
03/19/02 BEXAR REPORTED BY HAMS
0740 PM KELLY AFB TX .75 INCH HAIL
03/19/02 BEXAR REPORTED BY METAR
METAR
0755 PM STINSON FIELD TX 67 MPH TSTM WIND GUST
03/19/02 BEXAR REPORTED BY METAR
0805 PM MARION TX
TRAINER HALLE ROAD BLDG ROOF BLOWN OFF
AND I 10 CAUSING I10 TO BE
CLOSED
REPORTED BY HAMS
DCThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 19, 6:08 PM CST | Severe Thunderstorm Warning | EWX | Uvalde | 52 min |
| Mar 19, 6:18 PM CST | Severe Thunderstorm Warning | EWX | Zavala | 42 min |
| Mar 19, 6:23 PM CST | Severe Thunderstorm Warning | EWX | Burnet | 52 min |
| Mar 19, 6:25 PM CST | Tornado Warning | EWX | Frio, Zavala | 35 min |
| Mar 19, 6:39 PM CST | Tornado Warning | EWX | Medina, Uvalde | 51 min |
| Mar 19, 7:03 PM CST | Tornado Warning | EWX | Bexar | 57 min |
| Mar 19, 7:30 PM CST | Severe Thunderstorm Warning | EWX | Atascosa, Frio | 60 min |
| Mar 19, 7:51 PM CST | Tornado Warning | EWX | Bexar, Guadalupe, Wilson | 54 min |
| Mar 19, 7:58 PM CST | Tornado Warning | EWX | Dimmit, Maverick | 62 min |
| Mar 19, 8:05 PM CST | Severe Thunderstorm Warning | EWX | Comal | 25 min |
| Mar 19, 8:14 PM CST | Severe Thunderstorm Warning | EWX | Hays | 61 min |
| Mar 19, 8:20 PM CST | Severe Thunderstorm Warning | EWX | Gonzales | 55 min |
| Mar 19, 9:00 PM CST | Severe Thunderstorm Warning | EWX | Dimmit | 60 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.