Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 62, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 6, 2001, 5:48 PM CDT for Atascosa County, Frio County, Texas. It was in force for 57 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 6, 2001, 5:48 PM CDT (22:48 UTC)
- Expired
- May 6, 2001, 6:45 PM CDT
- In force
- 57 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Atascosa County, TX, Frio County, TX
The radar
The Austin/San Antonio radar (KEWX), 119 km from the middle of the area, began a volume at 22:48 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 |
|---|---|---|---|
| May 6, 6:35 PM CDT | Hail 1.5 | Big Foot, TX | |
| May 6, 6:40 PM CDT | Hail 1.5 | Poteet, TX |
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.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 10.8 hours before the alert went out and 193 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
- 1950 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 584 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KEWX 062248 SVRSAT TXC013-163-062345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 548 PM CDT SUN MAY 6 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... ATASCOSA FRIO * UNTIL 645 PM CDT * AT 548 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 19 MILES SOUTHWEST OF POTEET...OR ABOUT 10 MILES WEST OF CHARLOTTE...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE... 6 MILES NORTHWEST OF POTEET AT 630 PM 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. 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.
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 May 6, 3:15 PM CDT, 2 hours 33 minutes earlier.
Area forecast discussion, May 6, 3:15 PM CDT, 2 hours 33 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 315 PM CDT SUN MAY 6 2001 ISOLD TRW POPPING WEST OF THE RIVER OVR THE MOUNTAIN OF MEX AND NORTH OF THE HILL COUNTRY NEAR THE DRY LINE. CAPES ACRS THE CWA ARE IN THE 2500-4000 RANGE WITH LITTLE OR NO CAP...AND WITH SFC BASED LIS NEARING DOUBLE DIGITS. AMS VERY UNSTABLE AND EXPECT SCT TSTMS TO CONT FIRE NEAR THE DRY LINE/SRN END OF S/W THIS EVENING. WILL GO WITH HIGHEST POPS ACROSS THE HILL COUNTRY INTO THE NRN SECTIONS OF S CENTRAL TEXAS WITH MENTION OF SVR THIS EVENING AND LOWER CHCS OVER THE SE COUNTIES WHERE A FEW MAINLY SEA BREEZE TRW PSBL. EXPECT LOWER POPS MONDAY IN THE WAKE OF THE S/W WITH MAINLY WDLY SCT AFTN/EVENING RW/TRW...THEN A WK COLD FRONT SLIPS S INTO THE CWA MON NIGHT AND EARLY TUE BEFORE QUICKLY RETREATING NEWD OUT OF THE AREA. WILL UP MOS POPS WITH THE CDFNT FOR MON NIGHT...BUT POTENTIAL LOOKS BETTER FOR HVY RAIN THAN SVR DUE TO DEEPER MOISTURE...WK UPR AIR DYNAMICS...AND FRONTAL BOUNDARY. PRELIMINARY NUMBERS... AUS 069/083/066/081 4353 DRT 068/090/068/087 3232 SAT 071/085/067/083 3243 .EWX...NONE. 1/13
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 8:20 PM CDT | Tornado Warning | EWX | Maverick | 60 min |
| May 5, 9:18 PM CDT | Tornado Warning | EWX | Dimmit, Maverick | 57 min |
| May 5, 10:12 PM CDT | Tornado Warning | EWX | Dimmit | 48 min |
| May 5, 11:10 PM CDT | Severe Thunderstorm Warning | EWX | Maverick | 50 min |
| May 5, 11:53 PM CDT | Tornado Warning | EWX | Dimmit | 52 min |
| May 6, 5:05 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 30 min |
| May 6, 5:39 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 51 min |
| May 6, 6:00 PM CDT | Tornado Warning | EWX | Llano | 45 min |
| May 6, 6:40 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 65 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001
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.