Alert archive / Texas / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 9, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 18, 1991, 10:04 PM CST for Medina County, Texas. It was in force for 71 min.
The area
The counties it named.
The facts
- Issued
- Feb 18, 1991, 10:04 PM CST (04:04 UTC)
- Expired
- Feb 18, 1991, 11:15 PM CST
- In force
- 71 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Medina County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 4.1 hours before the alert went out and 250 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
- 234 J/kg
- Mixed-layer CIN
- -297 J/kg
- Mixed-layer LCL
- 1564 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- -42 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What 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.
In the hours before
Special weather statement, Feb 18, 5:03 PM CST, 5 hours 1 minute before
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</html>Special weather statement, Feb 18, 8:48 PM CST, 1 hour 16 minutes before
TXZ034>037-190500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 845 PM CST MON FEB 18 1991 ...THUNDERSTORMS OVER CENTRAL TEXAS... AT 840 PM AUSTIN RADAR INDICATED AN AREA OF MOSTLY SHOWERS WITH SOME THUNDERSTORMS PRODUCING DANGEROUS LIGHTNING FROM NEAR WACO TO AUSTIN TO NEAR SAN ANTONIO. MOVEMENT WAS TOWARDS THE NORTHEAST AT 30 MPH. THERE HAS BEEN NO SEVERE WEATHER REPORTED WITHIN THIS AREA TO THE AUSTIN WEATHER SERVICE.
Special weather statement, Feb 18, 9:03 PM CST, 1 hour 1 minute before
TXZ034>037-190500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 9 PM CST MON FEB 18 1991 ...THUNDERSTORMS OVER CENTRAL TEXAS...SOME PRODUCING MARBLE SIZE HAIL... AT 855 PM AUSTIN RADAR INDICATED AN AREA OF MOSTLY SHOWERS WITH SOME THUNDERSTORMS PRODUCING DANGEROUS LIGHTNING FROM NEAR WACO TO AUSTIN TO NEAR SAN ANTONIO. MOVEMENT WAS TOWARDS THE NORTHEAST AT 30 MPH. JUST BEFORE 9 PM MARBLE SIZE HAIL WAS REPORTED FROM LAKEWAY OUT BY LAKE TRAVIS. THERE HAS BEEN NO SEVERE WEATHER REPORTED WITHIN THIS AREA TO THE AUSTIN WEATHER SERVICE.
Special weather statement, Feb 18, 9:26 PM CST, 38 minutes before
TXZ034>037-190500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 920 PM CST MON FEB 18 1991 ...TORNADO WATCH IN EFFECT UNTILL 4 AM TUESDAY FOR EASTERN TEXAS...THIS WATCH INCLUDES BURLESON AND MILAM COUNTIES OF SOUTH CENTRAL TEXAS. AT 915 PM AUSTIN RADAR INDICATED AN AREA OF MOSTLY SHOWERS WITH SOME THUNDERSTORMS PRODUCING DANGEROUS LIGHTNING AND SMALL HAIL FROM NEAR WACO TO AUSTIN TO NEAR SAN ANTONIO. MOVEMENT WAS TOWARDS THE NORTHEAST AT 30 MPH. AROUND 9 PM REPORTS OF PEA TO MARBLE SIZE HAIL WERE RECEIVED FROM LEANDER AND LAKEWAY AND ALSO NEAR 183 AND 620 ALONG WITH HEAVY DOWNPOURS OF RAIN AND DANGEROUS LIGHTNING. THERE HAS BEEN NO SEVERE WEATHER REPORTED TO THE AUSTIN3 WEATHER SEVICE OFFICE. PJL
Special weather statement, Feb 18, 10:01 PM CST, 3 minutes before
TXZ034-035-038-039-190800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 1000 PM CST MON FEB 18 1991 ...THUNDERSTORMS MOVING TOWARD SAN ANTONIO... AT 945 PM CST...WEATHER SERVICE RADARS INDICATED AN AREA OF SHOWERS AND THUNDERSTORMS...A FEW WITH HEAVY RAIN...FROM EAGLE PASS TO AUSTIN. THE HEAVIEST STORMS WERE LOCATED IN MAVERICK AND ZAVALA COUNTIES...WITH MOVEMENT TOWARD THE NORTHEAST AT 25 MILES AN HOUR. HONDO WEATHER RADAR INDICATED THE STORMS IN MAVERICK AND ZAVALA COUNTIES CONTAIN SMALL HAIL. THESE STORMS ARE MOVING INTO MEDINA COUNTY AND WILL AFFECT HONDO AND THE SURROUNDING AREA WITHIN THE HOUR. THE AREA OF THUNDERSTORMS WILL EVENTUALLY MOVE INTO BEXAR AND SURROUNDING COUNTIES WITHIN AN HOUR OR TWO...AND AFFECT THE SAN ANTONIO METROPOLITAN AREA THE REST OF THIS MONDAY EVENING AND EARLY TUESDAY MORNING. BESIDES THE THREAT OF SMALL HAIL...THERE EXISTS THE POSSIBILITY FOR GUSTY WINDS AND FREQUENT LIGHTNUING. ADDITIONAL STATEMENTS OR BULLETINS WILL BE ISSUED AS CONDITIONS WARRANT...SO RESIDENTS IN SOUTH CENTRAL TEXAS AND ADJOINING AREAS SHOULD STAY TUNED FOR LATER UPDATES.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 10:16 PM CST | Severe Thunderstorm Warning | EWX | Medina | 59 min |
| Feb 18, 10:16 PM CST | Severe Thunderstorm Warning | EWX | Zavala | 59 min |
| Feb 18, 11:15 PM CST | Severe Thunderstorm Warning | EWX | Bexar | 60 min |
| Feb 18, 11:30 PM CST | Severe Thunderstorm Warning | EWX | Gonzales, Guadalupe, Wilson | 60 min |
| Feb 18, 11:30 PM CST | Severe Thunderstorm Warning | EWX | Atascosa | 60 min |
| Feb 19, 12:23 AM CST | Severe Thunderstorm Warning | EWX | Gonzales, Karnes, Wilson | 67 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1991Every severe thunderstorm warning in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.