Alert archive / Texas / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 43, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 23, 2003, 5:18 PM CDT for Val Verde County, Texas. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 23, 2003, 5:18 PM CDT (22:18 UTC)
- Expired
- Apr 23, 2003, 5:45 PM CDT
- In force
- 27 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
County Val Verde County, TX
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 |
|---|---|---|---|
| Apr 23, 2:35 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 10.3 hours before the alert went out and 95 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
- 1151 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 614 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 228 m²/s²
- 0-3 km storm-relative helicity
- 302 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 11.1
The text
As transmitted, in the capitals the NWS used until 2016.
376 WUUS54 KEWX 232218 SVRSAT TXC465-232245- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 518 PM CDT WED APR 23 2003 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... VAL VERDE * UNTIL 545 PM CDT * AT 518 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER VAL VERDE COUNTY...OR ABOUT 27 MILES SOUTHWEST OF SONORA...MOVING EAST AT 25 MPH. VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER. LAT...LON 3029 10099 3017 10098 3009 10070 3029 10071 $$
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.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 23, 3:00 PM CDT, 2 hours 18 minutes earlier.
Area forecast discussion, Apr 23, 3:00 PM CDT, 2 hours 18 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX ISSUED BY NWS CORPUS CHRISTI TX 300 PM CDT WED APR 23 2003 MAIN FORECAST PROBLEM THIS CYCLE WILL BE PRECIP CHANCES AND POSSBILE SEVERE WEATHER TONIGHT. SURFACE ANALYSIS AND MSAS SHOWS DRY LINE FROM NEAR CDS-SJT-E OF FST LINE WITH STRONG TO SEVERE THUNDERSTORMS OVER SJT CWA. CAP HAS BEEN SLOW TO BREAK NEAR DRT AS LOW CLOUDS HAVE HINDERED INSOLATION. CLOUDS SHOULD BEGIN TO ERODE DURING THE NEXT HOUR SO EXPECT THUNDERSTORM TO DEVELOP/MOVE INTO EWX COUNTY WARNING AREA LATE THIS AFTERNOON. WILL HAVE HIGH-END CHANCE/LIKELY CATEGORY NEAR CENTRAL AND EASTERN PARTS OF AREA AND WILL MENTION SEVERE. GFS IS NOT FORECASTING MUCH MID LEVEL COOLING SW OF SAT...SO WILL ONLY GO WITH LOW-END CHANCE OF THUNDERSTORMS TONIGHT. RICH THTE IS PROGGED OVER EASTERN SECTIONS 12Z THU SO WILL KEEP CHANCE OF SHOWERS AND STORMS THERE UNTIL H8 FRONT PASSES. STRONG ADIABATIC WARMING BEHIND DRY LINE THU MAY LEAD TO HIGH FIRE DANGER CONDITIONS ON THU. WEATHER THROUGH WEEKEND SHOULD REMAIN TRANQUIL. ON MONDAY...LOW LEVEL TROUGHING IN WEST TEXAS IS PROGGED TO INCREASE MOISTURE...ESPECIALLY ALONG THE RIO GRANDE. ONGOING EXTENDED FORECAST OF SLIGHT CHANCE OF SHOWERS EARLY NEXT WEEK LOOKS FINE AND WILL NOT UPDATE AT THIS TIME. PRELIM NUMBERS... AUS BU 064/085 056/081 053 99630 DRT BU 062/090 056/088 055 99300 SAT BU 064/086 058/083 054 99520 .EWX...NONE. AP
Hazardous weather outlook, Apr 23, 11:15 AM CDT, 6 hours 3 minutes before
TXZ171>173-183>194-202>209-217>225-228-241100- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX ISSUED BY NWS CORPUS CHRISTI TX 1115 AM CDT WED APR 23 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE FAR WESTERN HILL COUNTY LATE THIS AFTERNOON...AS THE DRYLINE INTERACTS WITH A VERY MOIST AND UNSTABLE ATMOSPHERE. LARGE HAIL AND DAMAGING WINDS ARE THE PRIMARY THREAT. THE SLIGHT RISK FOR SEVERE THUNDERSTORMS WILL BE EXPANDED TO ALL OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY TONIGHT AS AN UPPER LEVEL TROUGH DRAGS A PACIFIC COLD FRONT THROUGH THE AREA. THESE FEATURES WILL INTERACT WITH A MOIST AND UNSTABLE AIRMASS TO GENERATE SCATTERED TO NUMEROUS THUNDERSTORMS. THE STRONGEST ATMOSPHERIC DESTABILIZATION WILL BE TONIGHT AND CAUSE SOME STORMS TO BE SEVERE. LARGE HAIL AND DAMAGING WINDS WILL BE THE MAIN THREAT...ALTHOUGH ISOLATED TORNADOES ARE POSSIBLE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SHOWERS AND THUNDERSTORMS WILL END FROM WEST TO EAST ON THURSDAY AS THE FEATURES MOVE INTO EASTERN TEXAS. THE NEXT CHANCE OF SHOWERS AND THUNDERSTORMS WILL BE LATE MONDAY INTO TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED LATE THIS AFTERNOON AND TONIGHT. JM
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 5:38 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 37 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2003Every severe thunderstorm warning in 2003
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.