Alert archive / Texas / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 46, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Nov 24, 1986, 10:15 PM CST for Chambers County, Galveston County, Texas. It was in force for 105 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 24, 1986, 10:15 PM CST (04:15 UTC)
- Expired
- Nov 25, 1986, 12:00 AM CST
- In force
- 105 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Chambers County, TX, Galveston County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 24, 10:30 PM CST | Thunderstorm Wind 0 | Galveston, TX | |
| Nov 24, 10:50 PM CST | Thunderstorm Wind 0 | Galveston, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 4.3 hours before the alert went out and 164 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
- 30 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 545 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 203 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Nov 24, 7:10 PM CST, 3 hours 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GALVESTON TX 710 PM CST MON NOV 24 1986 ...A SEVERE THUNDERSTORM HAS BEEN ISSUED FOR MOST OF SOUTHEAST TEXAS... INCLUDING GALVESTON AND SURROUNDING COUNTIES. THE WATCH EXPIRES AT MIDNIGHT. ...A FLOOD WATCH REMAINS IN EFFECT TONIGHT. STRONG THUNDERSTORMS WERE OCCURRING WEST AND NORTH OF GALVESTON... AND OVER THE COASTAL WATERS. THESE THUNDERSTORMS WILL CONTINUE TO DEVELOP WELL INTO THE NIGHT. A STRONG UPPER LEVEL STORM SYSTEM IS APPROACHING FROM THE WEST. THE THUNDERSTORMS ASSOCIATED WITH THIS UPPER LEVEL SYSTEM WILL PRODUCE VERY HEAVY RAINFALL... SINCE THE GROUND IS ALREADY SATURATED FROM THE HEAVY RAINS OF THE PAST COUPLE OF DAYS... ANY ADDITIONAL HEAVY RAINFALL WILL NOT RUN OFF BUT WILL POOL IN LOW LYING AREAS AND ALONG FEEDER ROADS AND UNDERPASSES. MOTORISTS SHOULD EXERCISE EXTREME CAUTION AND SHOULD NOT DRIVE INTO WATER WHERE THE DEPTH OF THE WATER IN NOT KNOWN. STAY TUNED FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Nov 24, 7:12 PM CST, 3 hours 3 minutes before
SPECIAL WEATHER STATEMENT CORRECTION NATIONAL WEATHER SERVICE GALVESTON TX 710 PM CST MON NOV 24 1986 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MOST OF SOUTHEAST TEXAS... INCLUDING GALVESTON AND SURROUNDING COUNTIES. THE WATCH EXPIRES AT MIDNIGHT. ...A FLOOD WATCH REMAINS IN EFFECT TONIGHT. STRONG THUNDERSTORMS WERE OCCURRING WEST AND NORTH OF GALVESTON... AND OVER THE COASTAL WATERS. THESE THUNDERSTORMS WILL CONTINUE TO DEVELOP WELL INTO THE NIGHT. A STRONG UPPER LEVEL STORM SYSTEM IS APPROACHING FROM THE WEST. THE THUNDERSTORMS ASSOCIATED WITH THIS UPPER LEVEL SYSTEM WILL PRODUCE VERY HEAVY RAINFALL... SINCE THE GROUND IS ALREADY SATURATED FROM THE HEAVY RAINS OF THE PAST COUPLE OF DAYS... ANY ADDITIONAL HEAVY RAINFALL WILL NOT RUN OFF BUT WILL POOL IN LOW LYING AREAS AND ALONG FEEDER ROADS AND UNDERPASSES. MOTORISTS SHOULD EXERCISE EXTREME CAUTION AND SHOULD NOT DRIVE INTO WATER WHERE THE DEPTH OF THE WATER IN NOT KNOWN. STAY TUNED FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Nov 24, 8:26 PM CST, 1 hour 49 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GALVESTON TX 825 PM CST MON NOV 24 1986 ...A SEVERE THUNDERSTORM WATCH CONTINUES FOR MOST OF SOUTHEAST TEXAS... INCLUDING GALVESTON AND SURROUNDING COUNTIES. THE WATCH EXPIRES AT MIDNIGHT. ...A FLOOD WATCH REMAINS IN EFFECT TONIGHT. STRONG THUNDERSTORMS WERE OCCURRING FROM FREEPORT TO NEAR SANTA FE AND FROM NEAR LA MARQUE TO KEMAH. NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE THUNDERSTORMS... HOWEVER THE THUNDERSTORMS ARE PRODUCING VERY HEAVY RAINFALL. SINCE THE GROUND IS ALREADY SATURATED FROM THE HEAVY RAINS OF THE PAST COUPLE OF DAYS... ANY ADDITIONAL HEAVY RAINFALL WILL NOT RUN OFF BUT WILL POOL IN LOW LYING AREAS AND ALONG FEEDER ROADS AND UNDERPASSES. MOTORISTS SHOULD EXERCISE EXTREME CAUTION AND SHOULD NOT DRIVE INTO WATER WHERE THE DEPTH OF THE WATER IN NOT KNOWN. STAY TUNED FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 24, 6:17 PM CST | Severe Thunderstorm Warning | HGX | Washington | 58 min |
| Nov 24, 8:51 PM CST | Tornado Warning | HGX | Polk | 54 min |
| Nov 25, 2:40 PM CST | Flash Flood Warning | HGX | Brazoria, Harris | 80 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1986Every severe thunderstorm warning in 1986
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.