Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 107, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 27, 2000, 9:34 PM CDT for Val Verde County, Texas. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Apr 27, 2000, 9:34 PM CDT (02:34 UTC)
- Expired
- Apr 27, 2000, 10:30 PM CDT
- In force
- 56 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Val Verde County, TX
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 2.6 hours before the alert went out and 80 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
- 1425 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 2467 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KEWX 280235 SVRSAT TXC465-280330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 934 PM CDT THU APR 27 2000 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... VAL VERDE COUNTY * UNTIL 1030 PM CDT * AT 934 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER VAL VERDE COUNTY...OR ABOUT 13 MILES NORTH OF LOMA ALTA...MOVING SOUTH 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. g LAT...LON 3004 10109 2992 10083 3019 10074 3021 10110
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, 9:05 PM CDT, 29 minutes earlier.
Area forecast discussion, Apr 27, 9:05 PM CDT, 29 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 905 PM CDT THU APR 27 2000 MCS STILL GOING OVER SJT AREA WITH PROBABLY SOME CLOUD TOP COOLING ENHANCEMENT TAKING PLACE. AREA HAS GROWN STEADILY ACROSS CENTRAL TEXAS THIS EVENING...GRAZING THE NORTHERN FRINGES OF THE HILL COUNTRY. DUE TO WEAK INFLOW AND VIRTUALLY NO UPPER SUPPORT...WILL LIMIT ACTIVITY TO HILL COUNTRY TONIGHT AND THAT WILL BE IN THE LESS THAN 20 PERCENT CATEGORY. WILL MONITOR AND UPDATE IF NECESSARY. .EWX...NONE. 02/03
In the hours before
Special weather statement, Apr 27, 6:10 PM CDT, 3 hours 24 minutes before
TXZ171>173-183>194-202>209-217>225-228-280500- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 610 PM CDT THU APR 27 2000 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF THE TEXAS HILL COUNTRY AND THE NORTHERN SECTIONS OF SOUTH CENTRAL TEXAS THIS EVENING INTO TONIGHT. THE THREAT AREA IS ALONG AND NORTH OF A LINE FROM DEL RIO TO AUSTIN TO GIDDINGS. A COOL FRONT WILL SINK INTO THE NORTHERN HILL COUNTRY THIS EVENING AND SLOWLY DRIFT ACROSS SOUTH CENTRAL TEXAS AND THE REMAINDER OF THE HILL COUNTRY TONIGHT. UPPER LEVEL SUPPORT FOR SEVERE WEATHER IS LACKING. THEREFORE...THE SEVERE THREAT MAY DECREASE WITHIN A FEW HOURS OF SUNSET AS TEMPERATURE CONTRASTS LESSEN. HOWEVER...OUTFLOW BOUNDARIES FROM STORMS COULD ENHANCE THE SEVERE POTENTIAL IN SOME AREAS. THE MAIN THREAT WILL BE LARGE HAIL AND DAMAGING WINDS. EMERGENCY MANAGEMENT AND STORM SPOTTER GROUPS ARE ADVISED TO MONITOR THE LATEST WEATHER DEVELOPMENTS THIS EVENING AND TONIGHT. SPOTTER ACTIVATION MAY BE REQUIRED. && FOR INFORMATION ON WEATHER THREATS IN SURROUNDING AREAS...REFER TO OUTLOOKS FROM OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH... HOUSTON/GAKLVESTON AND CORPUS CHRISTI.
Nearby
Severe Thunderstorm Warnings in Texas, 2000Every severe thunderstorm warning in 2000
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.