Alert archive / Texas / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 3, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at Apr 12, 1994, 5:13 AM CDT for Zapata County, Texas. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Apr 12, 1994, 5:13 AM CDT (10:13 UTC)
- Expired
- Apr 12, 1994, 7:15 AM CDT
- In force
- 2 hr
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
County Zapata County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 10.2 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
- 3185 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 634 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- -0.2
- Supercell composite
- -1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBRO 121014 SVRBRO TXC505-121215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 513 AM CDT TUE APR 12 1994 THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...... IN SOUTH TEXAS ...ZAPATA COUNTY AT 510 AM CDT...NATIONAL WEATHER SERVICE RADAR WAS DETECTING A SEVERE THUNDERSTORM ACROSS NORTHERN ZAPATA COUNTY ABOUT 30 MILES WEST OF HEBBRONVILLE. MOVEMENT WAS NORTHEAST AROUND 20 MILES AN HOUR. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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, Apr 12, 4:54 AM CDT, 19 minutes before
TXZ248>255-514-121055- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BROWNSVILLE TX 454 AM CDT TUE APR 12 1994 ...THUNDERSTORMS DEVELOPING RAPIDLY ACROSS THE NORTHERN END OF FALCON LAKE... AT 435 AM CDT...NATIONAL WEATHER SERVICE RADAR WAS DETECTING THUNDERSTORMS...SOME WITH VERY HEAVY RAINFALL...DEVELOPING ACROSS THE NORTHERN END OF FALCON LAKE OR FROM ABOUT 15 MILES WEST OF HEBBRONVILLE SOUTHWEST INTO MEXICO ABOUT 40 MILES SOUTH OF LAREDO. MOVEMENT WAS NORTHEAST AROUND 20 MILES AN HOUR. PEOPLE ACROSS ZAPATA COUNTY SHOULD BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS DURING THE REMAINDER OF THE EARLY MORNING HOURS. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG AND GUSTY WINDS...VERY HEAVY RAINFALL WHICH COULD RESULT IN LOCALIZED FLOODING...AND HAIL. ELEWHERE...WIDELY SCATTERED SHOWERS WERE LOCATED BETWEEN BAFFIN BAY AND HEBBRONVILLE. MOVEMENT WAS ALSO NORTHEAST AT 20 MILES AN HOUR.
Nearby
Severe Thunderstorm Warnings in Texas, 1994Every severe thunderstorm warning in 1994
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.