Alert archive / Texas / Tornado Warnings in 1991
Tornado Warning 2, NWS Brownsville, TX
NWS Brownsville, TX issued this tornado warning at Apr 5, 1991, 8:30 AM CST for Cameron County, Texas. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- Apr 5, 1991, 8:30 AM CST (14:30 UTC)
- Expired
- Apr 5, 1991, 9:15 AM CST
- In force
- 45 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
County Cameron County, TX
The nearest sounding before it
Brownsville Intl, TX (KBRO), launched 12:00Z, 2.5 hours before the alert went out and 29 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
- 1771 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 603 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 8.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBRO 051431 TORBRO TXC061-051515- BULLETIN - EBS ACTIVATION REQUESTED TORNADO AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 830 AM CST FRI APR 5 1991 THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A TORNADO AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 915 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH TEXAS ...NORTHEASTERN CAMERON COUNTY AND FOR MARINE INTERESTS IN THE COASTAL WATERS AROUND... ...MOUTH OF THE RIVER NATIONAL WEATHER SERVICE RADAR AT 820 AM WAS DETECTING A POSSIBLE TORNADO OVER THE LAGUNA MADRE BETWEEN PORT ISABEL AND PORT MANSFIELD. THE TORNADO WAS MOVING EAST AT 20 MILES AN HOUR. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF AVAILABLE. OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
What forecasters said that day
The local office's own words before this tornado 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, Apr 5, 5:57 AM CST, 2 hours 33 minutes before
TXZ041>044-051145- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BROWNSVILLE TX 555 AM CST FRI APR 5 1991 AT 528 AM AN AREA OF SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN STRETCHED FROM JUST EAST OF CORPUS CHRISTI TO RAYMONDVILLE AND SOUTH INTO THE VALLEY...BETWEEN WESLACO AND SAN BENITO. THESE THUNDERSTORMS CONTINUED SOUTH INTO MEXICO FOR 95 MILES. MOVEMENT WAS NORTH AT 20 MILES AN HOUR. MOTORISTS...AVOID AREAS THAT FLOOD EASILY. DANGEROUS LIGHTNING AND GUSTY WINDS MAY ACCOMPANY THESE STORMS. MARINERS ON BAFFIN BAY AND ALONG THE LAGUNA MADRE SHOULD STAY IN PORT. OTHER ISOLATED THUNDERSTORMS WERE BETWEEN LAREDO AND FALFURRIAS AND OVER THE GULF MORE THAN 75 MILES NORTHEAST THROUGH SOUTH OF PORT ISABEL. MOVEMENT WAS NORTH AT 20 MILES AN HOUR.
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 6:40 AM CST | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo | 50 min |
| Apr 5, 7:21 AM CST | Severe Thunderstorm Warning | BRO | Cameron | 54 min |
| Apr 5, 7:37 AM CST | Severe Thunderstorm Warning | BRO | Willacy | 53 min |
| Apr 5, 8:24 AM CST | Flash Flood Warning | BRO | Cameron | 2 hr |
| Apr 5, 10:18 AM CST | Flash Flood Warning | BRO | Cameron | 3 hr |
| Apr 5, 1:16 PM CST | Flash Flood Warning | BRO | Cameron | 3 hr |
Nearby
Tornado Warnings in Texas, 1991Every tornado warning in 1991Tornadoes 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.