Alert archive / Texas / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 8, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 21, 2003, 4:47 AM CST for Kendall County, Kerr County, Texas. It was in force for 58 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
- Feb 21, 2003, 4:47 AM CST (10:47 UTC)
- Expired
- Feb 21, 2003, 5:45 AM CST
- In force
- 58 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties Kendall County, TX, Kerr County, TX
The radar
The Austin/San Antonio radar (KEWX), 84 km from the middle of the area, began a volume at 10:47 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.
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 |
|---|---|---|---|
| Feb 21, 4:10 AM CST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 10.8 hours before the alert went out and 201 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 567 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
478 WUUS54 KEWX 211047 SVRSAT TXC259-265-211145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 446 AM CST FRI FEB 21 2003 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... KERR KENDALL * UNTIL 545 AM CST * AT 446 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES SOUTH OF CENTER POINT...OR ABOUT 6 MILES NORTHEAST OF BANDERA...MOVING NORTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE... 2 MILES SOUTHEAST OF COMFORT AT 500 AM 6 MILES NORTHWEST OF SISTERDALE AT 510 AM 6 MILES SOUTHEAST OF BANKERSMITH AT 520 AM LAT...LON 2978 9891 2987 9910 3013 9884 3006 9853 $$
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 Feb 21, 2:22 AM CST, 2 hours 25 minutes earlier.
Area forecast discussion, Feb 21, 2:22 AM CST, 2 hours 25 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 222 AM CST FRI FEB 21 2003 ACTIVITY ON THE INCREASE AGAIN AS THE UPPER LOW CONTINUES TO DIG SOUTHEAST TOWARD THE BIG BEND. DYNAMICS FOR SEVERE WEATHER AND HEAVY RAIN TODAY WILL COME TO AN END AS THE UPPER LOW SWEEPS ACROSS SOUTH TEXAS THIS AFTERNOON. TEMPS TODAY WILL VARY LITTLE DUE TO RAINS. CLEARING SKIES TONIGHT WILL ALLOW TEMPS TO DROP TO NEAR NORMAL VALUES. MUCH DRIER ATMOS SATURDAY AND A BIT OF DOWNSLOPING WINDS OVER WESTERN COUNTIES WILL ALLOW TEMPS TO RISE TO NORMAL OR ABOVE NORMAL. SOME INCOMING CIRRUS SUNDAY WITH THE NEXT STORM SYSTEM SWINGING THROUGH THE CENTRAL U.S. A BACKDOOR TYPE FRONT WILL MOVE INTO SOUTH TEXAS MONDAY SETTING UP ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS BY MID WEEK. PRELIM NUMBERS... AUS 55 43 66 43 66 +500 SAT 58 45 66 45 68 +500 DRT 58 49 74 46 71 +200 .EWX...FLASH FLOOD WATCH THOROUGH FRIDAY AFTERNOON FOR ALL OF SOUTH CENTRAL TEXAS. 06/08
Hazardous weather outlook, Feb 20, 6:00 AM CST, 22 hours 47 minutes before
TXZ171>173-183>194-202>209-217>225-228-211200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 AM CST THU FEB 20 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY...EXCESSIVE RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE EXPECTED OVER ALL OF SOUTH CENTRAL TEXAS TODAY. AS A WINTER STORM SYSTEM APPROACHES SOUTH TEXAS TONIGHT, AN ADDITIONAL 2 TO 3 INCHES OF RAIN IS POSSIBLE AND FLASH FLOODING BECOMES LIKELY. ALSO THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WITH LARGE HAIL. .DAYS TWO THROUGH SEVEN... AN ADDITIONAL ONE INCH OF RAIN FRIDAY IS POSSIBLE BEFORE THE WINTER STORM EXITS SOUTH TEXAS. FLASH FLOODING AND A FEW SEVERE THUNDERSTORMS WILL REMAIN UNTIL AROUND NOON FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 8:06 PM CST | Flash Flood Warning | EWX | Burnet | 3 hr |
| Feb 20, 8:31 PM CST | Flash Flood Warning | EWX | Fayette | 89 min |
| Feb 21, 3:47 AM CST | Flash Flood Warning | EWX | Bandera, Gillespie, Kendall, Kerr | 3 hr |
| Feb 21, 3:51 AM CST | Severe Thunderstorm Warning | EWX | Bandera, Kerr | 54 min |
| Feb 21, 4:39 AM CST | Flash Flood Warning | EWX | Blanco, Burnet | 3 hr |
| Feb 21, 6:01 AM CST | Flash Flood Warning | EWX | Hays, Travis, Williamson | 4 hr |
| Feb 21, 6:38 AM CST | Flash Flood Warning | EWX | Gillespie | 67 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; radar from the NEXRAD Level II archive.