Alert archive / Texas / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 47, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 28, 2003, 12:10 AM CDT for Val Verde County, Texas. It was in force for 50 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 28, 2003, 12:10 AM CDT (05:10 UTC)
- Expired
- Apr 28, 2003, 1:00 AM CDT
- In force
- 50 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 nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 5.2 hours before the alert went out and 89 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
- 55 J/kg
- Mixed-layer CIN
- -326 J/kg
- Mixed-layer LCL
- 2935 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
431 WUUS54 KEWX 280510 SVRSAT TXC465-280600- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1207 AM CDT MON APR 28 2003 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... VAL VERDE * UNTIL 100 AM CDT * AT 1207 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER VAL VERDE COUNTY...OR ABOUT 58 MILES NORTHWEST OF DEL RIO...MOVING EAST NORTHEAST AT 25 MPH. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER WESTERN VAL VERDE COUNTY CAPABLE OF PRODUCING STRONG DAMAGING WINDS IN EXCESS OF 60 MPH...POSSIBLE LARGE HAIL AND FREQUENT LIGHTNING. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. LAT...LON 3027 10175 2981 10173 2962 10072 3027 10074 $$
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 27, 11:23 PM CDT, 47 minutes earlier.
Area forecast discussion, Apr 27, 11:23 PM CDT, 47 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1123 PM CDT SUN APR 27 2003 THUNDERSTORMS CONTINUE TO REGENERATE NEAR THE CONFLUENCE OF THE PECOS AND RIO GRANDE AS A MID LEVEL MESO-LOW SPINS INTO CROCKETT COUNTY JUST TO THE NORTH. WILL UPDATE TO INCREASE POPS OVER VAL VERDE, KINNEY, AND EDWARDS COUNTIES. A FEW STORMS MAY BE PRODUCING SOME GUSTY WINDS DUE TO THE INVERTED-V SIGNATURE FROM THE DRT SOUNDING. STORM STRENGTH IS AT ITS STRONGEST SO FAR THIS EVENING, BUT AN INHIBITING FACTOR IS CONTINUED COOLING OF LOW LEVEL TEMPERATURES. THUS WILL NOT MENTION SEVERE. .EWX...NONE 18/8/23 .PREVIOUS DISCUSSION............................................ SHORTWAVE OVER THE TRANS-PECOS REGION APPEARS TO BE SIGNIFICANT ENOUGH TO POOL MOISTURE AND BREAK DOWN CAPPING OVER WESTERN SECTIONS OF SOUTH CENTRAL TEXAS THIS EVENING. 00Z DRT SOUNDING INDICATES THE AIR AHEAD OF THE UNSTABLE REGION AND STILL SHOWS ABOVE NORMAL MOISTURE, MOST OF WHICH COMING FROM THE UPPER LEVELS. WIND PROFILES AND FORECASTS INDICATE THIS AREA OF INSTABILITY IS IN NO HURRY TO ARRIVE AT THE AUS/SAT AREAS, SO WILL KEEP POPS OUT FOR TONIGHT. HOWEVER, MORNING WORDING FOR TOMORROW WILL BE CHANGED AS THE SHEAR AXIS WILL TEAM UP WITH OVERNIGHT LOW LEVEL WIND MAXIMA TO POOL MOSTURE OVER THE ESCARPMENT AREA BY DAYBREAK MONDAY. THUS WILL MAINTAIN LOW POPS DUE MAINLY TO LIGHT AMOUNTS EXPECTED AND ACCELERATE TIMING OF THE CHANCE OF RAIN. WILL ALSO NUDGE MINS UP A CATEGORY AS THE CONVEYOR BELT SHOULD ALLOW DEWPOINTS TO CLIMB OVERNIGHT. FINAL CHANGE WILL BE TO MAKE A SLIGHT ADJUSTMENT TO TUESDAYS HIGHS WHICH IS IN SLIGHT CONFLICT WITH IFPS DATA. THE REMAINDER OF THE FORECAST APPEARS ON TRACK.
Hazardous weather outlook, Apr 27, 6:00 AM CDT, 18 hours 10 minutes before
TXZ171>173-183>194-202>209-217>225-228-281100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 AM CDT SUN APR 27 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY SCATTERED THUNDERSTORMS HILL COUNTRY AND SOUTH CENTRAL TEXAS THROUGH NOON SHOULD REMAIN BELOW SEVERE LEVELS. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN... THUNDERSTORMS ALONG THE DRY LINE WILL AFFECT WESTERN COUNTIES ON TUESDAY. ISOLATED STORMS MAY APPROACH SEVERE LEVELS. THUNDERSTORMS WILL MOVE ACROSS SOUTH CENTRAL TEXAS AHEAD OF A COLD FRONT ON THURSDAY. STRONG CONVECTION IS POSSIBLE WITH THIS SYSTEM. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
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.