Alert archive / Texas / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 21, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 3, 1993, 9:32 PM CST for Chambers County, Texas. It was in force for 58 min.
The area
The counties it named.
The facts
- Issued
- Apr 3, 1993, 9:32 PM CST (03:32 UTC)
- Expired
- Apr 3, 1993, 10:30 PM CST
- In force
- 58 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Chambers County, TX
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 3.5 hours before the alert went out and 149 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
- 5 J/kg
- Mixed-layer CIN
- -464 J/kg
- Mixed-layer LCL
- 538 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 346 m²/s²
- 0-3 km storm-relative helicity
- 508 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KGLS 040332 SVRGLS TXC071-TXZ000-040430- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE GALVESTON TX 932 PM CST (1032 PM CDT) SAT APR 3 1993 THE NATIONAL WEATHER SERVICE IN GALVESTON HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 1030 PM CST (1130 PM CDT) FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST TEXAS ...CHAMBERS COUNTY AND GALVESTON BAY... AT 925 PM...RADAR INDICATED A SEVERE THUNDERSTORM OVER CENTRAL AND EAST GALVESTON BAY MOVING SLIGHTLY NORTH OF DUE EAST AT 30 TO 35 MILES AN HOUR. THIS STORM HAS A HISTORY OF PRODUCING HALF TO THREE-QUARTER INCH SIZED HAIL IN NORTH GALVESTON COUNTY. 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. MARINERS SHOULD HEAD FOR...OR REMAIN IN...SAFE PORT. NNNN
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 3, 8:42 PM CST, 50 minutes before
TXZ047-040400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 842 PM CST SAT APR 03 1993 AT 835 PM A STRONG THUNDERSTORM WAS DUMPING VERY HEAVY RAIN NEAR CLEAR LAKE IN SOUTHERN HARRIS COUNTY AND WAS PRODUCING STREET FLOODING... INTENSE LIGHTNING ALONG WITH PEA TO MARBLE SIZE HAIL. THIS STORM WAS MOVING EAST AND NORTHEAST AT 20 MILES AN HOUR. AVOID AREAS THAT FLOOD EASILY...STAY INDOORS AND AWAY FROM WINDOWS AND ELECTRICAL APPLIANCES UNTIL THE STORM MOVES AWAY.
Special weather statement, Apr 3, 8:43 PM CST, 49 minutes before
TXZ047-040400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 842 PM CST SAT APR 03 1993 AT 835 PM A STRONG THUNDERSTORM WAS DUMPING VERY HEAVY RAIN NEAR CLEAR LAKE IN SOUTHERN HARRIS COUNTY AND WAS PRODUCING STREET FLOODING... INTENSE LIGHTNING ALONG WITH PEA TO MARBLE SIZE HAIL. THIS STORM WAS MOVING EAST AND NORTHEAST AT 20 MILES AN HOUR. AVOID AREAS THAT FLOOD EASILY...STAY INDOORS AND AWAY FROM WINDOWS AND ELECTRICAL APPLIANCES UNTIL THE STORM MOVES AWAY.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 7:11 PM CST | Severe Thunderstorm Warning | HGX | Brazoria | 64 min |
| Apr 3, 7:45 PM CST | Severe Thunderstorm Warning | HGX | Galveston | 60 min |
| Apr 3, 8:21 PM CST | Severe Thunderstorm Warning | HGX | Chambers | 69 min |
| Apr 3, 9:46 PM CST | Severe Thunderstorm Warning | HGX | Galveston | 59 min |
| Apr 3, 10:23 PM CST | Flash Flood Warning | HGX | Galveston | 2 hr |
| Apr 3, 10:44 PM CST | Flash Flood Warning | HGX | Harris | 91 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1993Every severe thunderstorm warning in 1993
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.