Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 54, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 9, 2002, 7:37 PM CDT for Val Verde County, Texas. It was in force for 53 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
- May 9, 2002, 7:37 PM CDT (00:37 UTC)
- Expired
- May 9, 2002, 8:30 PM CDT
- In force
- 53 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, 0.6 hours before the alert went out and 93 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
- 3638 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1636 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 7.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KEWX 100037 SVRSAT TXC465-100130- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 737 PM CDT THU MAY 9 2002 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... VAL VERDE * UNTIL 830 PM CDT * AT 737 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER VAL VERDE COUNTY...OR ABOUT 59 MILES NORTHWEST OF DEL RIO...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE... 20 SOUTHEAST OF PANDALE AT 750 PM IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN. LAT...LON 2994 10178 2981 10163 2992 10098 3030 10133
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 9, 2:40 PM CDT, 4 hours 57 minutes earlier.
Area forecast discussion, May 9, 2:40 PM CDT, 4 hours 57 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 240 PM CDT THU MAY 9 2002 COMBINATION OF SURFACE COLD FRONT HEADING SOUTHWARD FROM NORTH TEXAS AND UPPER-LEVEL TROUGH OF LOW PRESSURE APPROACHING FROM THE WEST SHOULD INCREASE CHANCES FOR CONVECTION FOR MUCH OF CWA TONIGHT. ACTIVITY MAY LINGER THROUGH FRIDAY MORNING. NEXT ROUND OF TSTMS APPEARS TO BE MONDAY AND AGAIN ON THURSDAY. RAPID WARMUP AFTER THIS FIRST FROPA MODIFIES. WINDS PICK UP FRIDAY AND SATURDAY AS LOW-LEVEL FLOW RESUMES FROM THE GULF. PRELIMINARY NUMBERS... AUS 68/88/72/90 521- DRT 73/92/75/94 31-- SAT 72/89/74/91 421- .EWX...NONE.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:57 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 63 min |
| May 9, 8:24 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 36 min |
| May 9, 8:27 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 33 min |
| May 9, 8:28 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 62 min |
| May 9, 9:22 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 53 min |
| May 9, 9:35 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 55 min |
| May 9, 10:38 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Kinney, Val Verde | 52 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002
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.