Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 105, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 12, 2000, 3:12 AM CDT for Maverick County, Texas. It was in force for 63 min. 1 report came from 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, with what was reported inside it.
The facts
- Issued
- Apr 12, 2000, 3:12 AM CDT (08:12 UTC)
- Expired
- Apr 12, 2000, 4:15 AM CDT
- In force
- 63 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Maverick County, TX
The radar
The Laughlin AFB radar (KDFX), 47 km from the middle of the area, began a volume at 07:57 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 |
|---|---|---|---|
| Apr 12, 3:30 AM CDT | Hail 1 | Eagle Pass, 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
Del Rio, TX (KDRT), launched 00:00Z, 8.2 hours before the alert went out and 70 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
- 2596 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1310 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 216 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 5.2
The text
As transmitted, in the capitals the NWS used until 2016.
447 WUUS54 KEWX 120813 SVRSAT TXC323-120915- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 312 AM CDT WED APR 12 2000 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... MAVERICK COUNTY * UNTIL 415 AM CDT * AT 312 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES NORTHWEST OF EAGLE PASS...OR ABOUT 8 MILES NORTHWEST OF QUEMADO...MOVING EAST AT 20 MPH. THIS STORM WILL BE NEAR QUEMADO AT 325 AM AND NEAR NORMANDY AT 330. 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. .END/ LAT...LON 2908 10067 2852 10043 2855 10014 2909 10012
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 11, 8:25 PM CDT, 6 hours 47 minutes earlier.
Area forecast discussion, Apr 11, 8:25 PM CDT, 6 hours 47 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
825 PM CDT TUE APR 11 2000
UPDATED ZONES TO REFLECT SVR THUNDERSTORM WATCH 166 THRU 11Z. BOOSTED
POPS ALL AREAS...ESPECIALLY NORTH AS THE LINE OF THUNDERSTORMS EDGES
SOUTH WITH THE COLD FRONT. MID SHIFT WILL NEED TO DETERMINE IF
FLASH FLOOD WATCH SHOULD BE EXTENDED TO SOUTHERN COUNTIES OF CWA.
.EWX...FLASH FLOOD WATCH FOR TEXAS HILL COUNTRY AND NORTHERN PORTIONS
OF SOUTH CENTRAL TEXAS TIL WEDNESDAY AFTERNOON.
03/01/CAThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 9:44 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Val Verde | 31 min |
| Apr 11, 11:47 PM CDT | Severe Thunderstorm Warning | EWX | Blanco | 43 min |
| Apr 12, 12:14 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 61 min |
| Apr 12, 12:19 AM CDT | Severe Thunderstorm Warning | EWX | Edwards | 56 min |
| Apr 12, 12:30 AM CDT | Severe Thunderstorm Warning | EWX | Travis | 60 min |
| Apr 12, 1:35 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 55 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.