Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 21, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jun 15, 1987, 4:20 PM CDT for Polk County, Trinity County, Texas. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Jun 15, 1987, 4:20 PM CDT (21:20 UTC)
- Expired
- Jun 15, 1987, 5:15 PM CDT
- In force
- 55 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Polk County, TX, Trinity County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Longview/Gregg, TX (KGGG), launched 12:00Z, 9.3 hours before the alert went out and 161 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
- 1183 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1162 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 26 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 KHOU 152120
SVRHOU
TXC373-455-152215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON TX
420 PM CDT MON JUN 15 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 515 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTHEAST TEXAS
...POLK
IN NORTHEAST TEXAS
...TRINITY
RADAR INDICATES TWO POSSIBLE SEVERE THUNDERSTORMS...ONE IN TRINITY
COUNTY JUST NORTH OF GROVETON AND THE OTHER IN POLK COUNTY NEAR
CORRIGAN. BOTH STORMS ARE MOVING SOUTH.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTEC^TION 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.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, Jun 15, 12:58 PM CDT, 3 hours 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 1255 PM CDT MON JUN 15 1987 A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED UNTIL 600 PM FOR PART OF SOUTHEAST TEXAS INCLUDING THE FOLLOWING COUNTIES..HOUSTON..TRINITY.. WALKER..SAN JACINTO..POLK..WASHINGTON..GRIMES..WALLER..MONTGOMERY AND LIBERTY. WEATHER SERVICE RADAR SHOWS AN AREA OF STRONG THUNDERSTORMS WELL NORTH OF THIS AREA BETWEEN WACO AND TYLER. THE STORMS WERE MOVING SLOWLY SO,UTHEAST. STAY TUNED TO YOUR WEATHER RADIO OR LOCAL TV AND RADIO STATIONS FOR LATER STATEMENTS AS NEEDED.
Special weather statement, Jun 15, 2:51 PM CDT, 1 hour 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 250 PM CDT MON JUN 15 1987 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTILL 600 PM FOR PART OF SOUTHEAST TEXAS INCLUDING THE FOLLOWING COUNTIES..HOUSTON..TRINITY.. WALKER..SAN JACINTO..POLK..WASHINGTON..GRIMES..WALLER..MONTGOMERY AND LIBERTY. WEATHER SERVICE RADAR SHOWS AN AREA OF STRONG THUNDERSTORMS IN THE AREA BETWEEN WACO AND LUFKIN...AND NORTHWARD. THE STORMS WERE MOVING STEADILY SOUTHWARD. HOUSTON AND TRINITY COUNTIES WILL BE IN THE PATH OF SOME OF THESE THUNDERSTORMS DURING THE NEXT HOUR...WITH SOME BRIEFLY HEAVY RAINS AND STRONG GUSTY WINDS AFFECTING PORTIONS OF THESE COUNTIES. BOATERS ON AREA LAKES SHOULD BE AWARE OF THUNDERSTORMS APPROACHING FROM THE NORTH AND BE PREPARED TO SEEK SAFE HARBOUR. STAY TUNED TO YOUR WEATHER RADIO OR LOCAL TV AND RADIO STATIONS FOR LATER STATEMENTS AS NEEDED.
Nearby
Severe Thunderstorm Warnings in Texas, 1987Every severe thunderstorm warning in 1987
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.