Alert archive / Texas / Flash Flood Warnings in 1991
Flash Flood Warning 2, NWS Brownsville, TX
NWS Brownsville, TX issued this flash flood warning at Apr 5, 1991, 10:18 AM CST for Cameron County, Texas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Apr 5, 1991, 10:18 AM CST (16:18 UTC)
- Expired
- Apr 5, 1991, 1:15 PM CST
- In force
- 3 hr
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
County Cameron County, TX
The nearest sounding before it
Brownsville Intl, TX (KBRO), launched 12:00Z, 4.3 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 051626 COR FFWBRO BULLETIN-EBS ACTIVATION REQUESTED FLASH FLOOD WARNING CORRECTED NATIONAL WEATHER SERVICE BROWNSVILLE, TX 1025 AM CST FRI APR 05 1991 TXC061-051915- THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A FLOOD WARNING EFFECTIVE UNTIL 115 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH TEXAS ...CAMERON COUNTY NATIONAL WEATHER SERVICE RADAR AT 1010 AM WAS DETECTING NUMEROUS SHOWERS AND THUNDERSTORMS WHICH WERE PRODUCING VERY HEAVY RAINFALL. REPORTS FROM THE PUBLIC AND THE POLICE DEPARTMENT INDICATE THAT THE EASTERN TWO-THIRDS OF CAMERON COUNTY WERE THE HARDEST HIT BY THE HEAVY RAIN. THERE HAVE BEEN REPORTS OF 3 TO 5 FEET OF WATER IN HARLINGEN AND SAN BENITO AREAS. THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 15 MILES AN HOUR. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. MOST DEATHS IN FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE. ..ON FOOT.
What forecasters said that day
The local office's own words before this flash flood 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, 4 hours 21 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, 8:30 AM CST | Tornado Warning | BRO | Cameron | 45 min |
| Apr 5, 1:16 PM CST | Flash Flood Warning | BRO | Cameron | 3 hr |
Nearby
Flash Flood Warnings in Texas, 1991Every flash flood 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.