Alert archive / Texas / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 21, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at May 5, 1991, 9:28 AM CDT for Hidalgo County, Texas. It was in force for 62 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 5, 1991, 9:28 AM CDT (14:28 UTC)
- Expired
- May 5, 1991, 10:30 AM CDT
- In force
- 62 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
County Hidalgo County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 5, 9:52 AM CDT | Tornado F0 | Hidalgo, 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
Brownsville Intl, TX (KBRO), launched 12:00Z, 2.5 hours before the alert went out and 96 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
- 4555 J/kg
- Mixed-layer CIN
- -262 J/kg
- Mixed-layer LCL
- 1098 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBRO 051430 SVRBRO TXC215-051530- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 928 AM CDT SUN MAY 5 1991 THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH TEXAS ...HIDALGO COUNTY AT 925 AM CDT...BROWNSVILLE WEATHER RADAR SHOWED A SEVERE THUNDERSTORM ABOUT 20 MILES WEST OF MCALLEN...MOVING EAST AT 25 TO 30 MPH. THIS STORM APPEARS ON RADAR TO CONTAIN HAIL AND EXTREMELY HEAVY RAIN. IF IT DOES NOT WEAKEN...THE CITY OF MCALLEN SHOULD EXPERIENCE HAIL AND POSSIBLE STREET FLOODING DURING THE NEXT HOUR. 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 AQREAS 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 5, 6:50 AM CDT, 2 hours 38 minutes before
TXZ041>44-051300- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BROWNSVILLE TX 645 AM CDT SUN MAY 5 1991 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR DEEP SOUTH TEXAS UNTIL 10 AM... AT 625 AM BROWNSVILLE WEATHER RADAR SHOWED THUNDERSTORMS WITH VERY HEAVY RAIN 20 MILES NORTHWEST OF RIO GRANDE CITY...OVER THE NORTH END OF FALCON LAKE...AND 40 MILES NORTHEAST OF RIO GRANDE CITY. THESE STORMS MAY ALSO HAVE BRIEF GUSTY WINDS AND HAIL. ELSEWHERE OVER SOUTH TEXAS...THUNDERSTORMS...SOME WITH VERY HEAVY RAIN... WERE SCATTERED OVER THE AREA FROM RIO GRANDE CITY AND FALCON LAKE NORTHEAST TO BAFFIN BAY. MOVEMENT WAS EAST NORTHEAST AT 30 TO 35 MPH. WHILE INDIVIDUAL STORMS ARE MOVING QUITE RAPIDLY TO THE EAST AND NORTHEAST THIS MORNING...THE GENERAL AREA OF RAIN IS NEARLY STATIONARY. IF THIS CONTINUES...THE GROUND WILL BECOME SATURATED AND SOME LOCAL FLOODING OF STREAMS AND ROADWAYS COULD DEVELOP. ALSO...THE POTENTIAL REMAINS FOR THESE STORMS TO BECOME SEVERE. RESIDENTS OF DEEP SOUTH TEXAS SHOULD KEEP AND EYE TO THE SKY...AND STAY TUNED TO LOCAL SOURCES OF WEATHER INFORMATION THIS SUNDAY MORNING.
Special weather statement, May 5, 7:58 AM CDT, 1 hour 30 minutes before
TXZ041>44-051400- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BROWNSVILLE TX 655 AM CDT SUN MAY 5 1991 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR DEEP SOUTH TEXAS UNTIL 10 AM... AT 735 AM BROWNSVILLE WEATHER RADAR SHOWED THUNDERSTORMS...WITH VERY HEAVY RAIN AND HAIL INDICATED...ABOUT 15 MILES NORTH OF RIO GRANDE CITY AND JUST WEST OF MCCOOK. HAIL ONE HALF INCH IN DIAMETER WAS REPORTED IN THE STORM 15 MILES NORTH OF RIO GRANDE CITY...WHILE GOLF BALL SIZE HAIL WAS REPORTED IN THE MCCOOK AREA. ELSEWHERE OVER SOUTH TEXAS...SCATTERED TO NUMEROUS THUNDERSTORMS WERE OVER THE AREA FROM FROM FALCON LAKE TO NEAR MISSION...EXTENDING EAST TO BAFFIN BAY AND PORT MANSFIELD. w MOVEMENT WAS EAST 30 TO 35 MPH.
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 11:07 PM CDT | Severe Thunderstorm Warning | BRO | Hidalgo | 38 min |
| May 4, 11:32 PM CDT | Tornado Warning | BRO | Hidalgo | 28 min |
| May 5, 1:25 AM CDT | Severe Thunderstorm Warning | BRO | Jim Hogg | 65 min |
| May 5, 2:31 AM CDT | Tornado Warning | BRO | Brooks, Jim Hogg | 59 min |
| May 5, 2:59 AM CDT | Severe Thunderstorm Warning | BRO | Starr | 61 min |
| May 5, 4:10 AM CDT | Severe Thunderstorm Warning | BRO | Hidalgo, Starr | 65 min |
| May 5, 7:59 AM CDT | Severe Thunderstorm Warning | BRO | Hidalgo | 61 min |
| May 5, 8:22 AM CDT | Severe Thunderstorm Warning | BRO | Hidalgo, Starr | 68 min |
| May 5, 10:45 AM CDT | Severe Thunderstorm Warning | BRO | Hidalgo | 60 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.