Alert archive / Texas / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 113, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 12, 1991, 11:55 PM CDT for Val Verde County, Texas. It was in force for 60 min. 1 report 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 12, 1991, 11:55 PM CDT (04:55 UTC)
- Expired
- May 13, 1991, 12:55 AM CDT
- In force
- 60 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Val Verde County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 13, 12:15 AM CDT | Thunderstorm Wind 69 | Val Verde, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 4.9 hours before the alert went out and 66 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
- 1979 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 2065 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -47 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDRT 130451 SVRDRT TXC465-130555- BULETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DEL RIO TX 1155 PM CDT SUN MAY 12 1991 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1255 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY IN SOUTHCENTRAL TEXAS...VAL VERDE AT 1150 PM CDT MAYFIELD STORE...4 MILES SOUTH OF JUNO...REPORTED A SEVERE THUNDERSTORM WITH HEAVY RAIN AND WINDS GUSTING TO 70 MILES AN HOUR. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROANDS QUICKLY SO DONT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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.
In the hours before
Special weather statement, May 12, 7:41 PM CDT, 4 hours 14 minutes before
TXZ054-130245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 745 PM CDT SUN MAY 12 1991 AT 740 PM CDT WEATHER RADAR INDICATED AN AREA OF RAINSHOWERS LOCATED 25 MILES SOUTHWEST TO 50 MILES SOUTHWEST OF DEL RIO. AN ISOLDED THUNDERSTORM WAS 30 MILES TO THE SOUTHWEST OF DEL RIO. MOVEMENT WAS TO THE NORTHEAST AT 10 MPH. HEAVY RAIN...FREQUENT LIGHTNING...SMALL HAIL AND STRONG GUSTY WINDS ARE POSSIBLE. THESE STORMS WILL LIKELY MOVE INTO THE DEL RIO AND LAKE AMISTAD AREAS WITHIN THE NEXT HOUR...SO BOATERS AND FISHERMEN ON LAKE AMISTAD AND SURROUNDING RIVERS SHOULD KEEP A LOOKOUT FOR APPOACHING WEATHER. PERSONS IN THESE AREAS MAY WANT TO PREPARE FOR THIS THUNDERSTORM ACTIVITY BEFORE RETITRING FOR THE EVENING. STAY TUNED TO YOUR LOCAL RADIO STATION...TV...OR NOAA WEATHER RADIO FOR MORE DETAILS AS THEY DEVELOP.
Special weather statement, May 12, 9:44 PM CDT, 2 hours 11 minutes before
TXZ054-130345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 945 PM CDT SUN MAY 12 1991 AT 940 PM CDT WEATHER RADAR INDICATED A LINE OF THUNDERSTORMS LOCATED FROM 50 MILES NORTHWEST TO 75 MILES NORTH OF DEL RIO. MARBLE SIZE HAIL AND FREQUENT DANGEROUS LIGHTNING WERE REPORTED BY CHAPOTE RANCH...17 MILES WEST OF PANDALE. MOVEMENT WAS TO THE NORTHEAST AT 15 MPH. HEAVY RAINS AND STRONG GUSTY WINDS CAN ALSO BE EXPECTED WITH THESE STORMS . PERSONS IN THESE AREAS MAY WANT TO PREPARE FOR THIS THUNDERSTORM ACTIVITY BEFORE RETIRING FOR THE EVENING. STAY TUNED TO YOUR LOCAL RADIO STATION...TV...OR NOAA WEATHER RADIO FOR MORE DETAILS AS THEY DEVELOP.
Special weather statement, May 12, 10:49 PM CDT, 1 hour 6 minutes before
TXZ054-130445- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1050 PM CDT SUN MAY 12 1991 AT 1045 PM CDT WEATHER RADAR INDICATED AN AREA OF THUNDERSTORMS LOCATED FROM 25 MILES NORTHWEST TO 75 MILES NORTHWEST OF DEL RIO. SEVERAL RANCHERS IN VAL VERDE COUNTY HAVE REPORTED FREQUENT DANGEROUS LIGHTNING AND HEAVY RAIN DURING THE PAST HOUR. MOVEMENT WAS TO THE NORTHEAST AT 15 MPH. SMALL HAIL AND STRONG GUSTY WINDS CAN ALSO BE EXPECTED WITH THESE STORMS. MOTORISTS TRAVELING IN NORTHERN VAL VERDE COUNTY SHOULD BE ALERT TO FLOODING OF LOW WATER CROSSINGS.
Nearby
Severe Thunderstorm Warnings in Texas, 1991Every severe thunderstorm warning in 1991
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.