Alert archive / Texas / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 13, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at May 3, 1991, 4:31 PM CDT for Zapata County, Texas. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- May 3, 1991, 4:31 PM CDT (21:31 UTC)
- Expired
- May 3, 1991, 5:30 PM CDT
- In force
- 59 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
County Zapata County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 9.5 hours before the alert went out and 198 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
- 2965 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 648 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 4.9
- Supercell composite
- 23.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBRO 032132 SVRBRO TXC505-032230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 431 PM CDT FRI MAY 3 1991 THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH TEXAS ...NORTHERN ZAPATA COUNTY A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 25 MILES NORTHWEST OF ZAPATA AND WAS MOVING TO THE EAST NORTHEAST AT 25 MILES AN HOUR. AT THIS PRESENT MOVEMENT THE THUNDERSTORM WILL MOVE ACROSS THE NORTHERN PART OF ZAPATA COUNTY DURING THE NEXT 1 TO 2 HOURS. THIS THUNDERSTORM WILL LIKELY PRODUCE DAMAGING WINDS AND HAIL IN ADDITION TO TORRENTIAL RAINS WHICH COULD FLOOD LOW LYING AREAS. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 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 ROADS QUICKLY SO DON'T 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 3, 4:01 PM CDT, 30 minutes before
TXZ041-032200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BROWNSVILLE TX 400 PM CDT FRI MAY 3 1991 ...RAPIDLY DEVELOPING THUNDERSTORMS IN MEXICO HEADING TOWARD ZAPATA COUNTY... BROWNSVILLE RADAR AT 355 PM CDT INDICATED VERY STRONG THUNDERSTORMS HAD DEVELOPED IN A VERY SHORT PERIOD OF TIME 30 MILES WEST OF ZAPATA. THESE THUNDERSTORMS WERE MOVING TO THE EAST NORTHEAST AROUND 15 MILES AN HOUR... AND IF THIS CURRENT MOVEMENT CONTINUES...THE NORTHERN HALF OF ZAPATA COUNTY SHOULD BE AFFECTED BY THESE STORMS WITHIN THE NEXT TWO HOURS. THESE THUNDERSTORMS WILL LIKELY PRODUCE STRONG GUSTY WINDS AND HAIL ALONG WITH TORRENTIAL RAINS WHICH COULD FLOOD LOW LYING AREAS. STAY TUNED TO NOAA W EATHER RADIO AND OTHER NEWS SOURCES FOR FURTHER STATEMENTS AND ANY POSSIBLE WARNINGS.
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 6:32 PM CDT | Severe Thunderstorm Warning | BRO | Zapata | 58 min |
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; the sounding from the Mesonet's radiosonde archive.