Alert archive / Texas / Flash Flood Warnings in 1987
Flash Flood Warning 9, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Nov 25, 1987, 6:28 AM CST for Walker County, Texas. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Nov 25, 1987, 6:28 AM CST (12:28 UTC)
- Expired
- Nov 25, 1987, 8:30 AM CST
- In force
- 2 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Walker 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
Lake Charles Mun, LA (KLCH), launched 12:00Z, 0.5 hours before the alert went out and 238 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 155 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KHOU 251228
FFWHOU
TXC471-251430-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON TX
628 AM CST WED NOV 25 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 830 AM CST FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST TEXAS
...WALKER
THE WALKER COUNTY SHERIFF DEPARTMENT HAS REPORTED SEVERE FLOODING IN
WALKER COUNTY IN THE HUNTSVILLE AREA. FLOODING IS OCCURRING AT
OLCATIONS ON HIGHWAYS 480...247...AND 19. THESE CONDITIONS ARE
EXPECTED TO CONTINUE FOR THE NEXT SEVERAL HOURS.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS 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. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.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, Nov 25, 2:38 AM CST, 3 hours 50 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 835 AM CDT MON APR 13 1987 ...STRONG THUNDERSTORMS DEVELOPING IN SOUTHEAST TEXAS... WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS WERE PRODUCING HEAVY RAINFALL FROM MONTGOMERY ACROSS THE HUNTSVILLE AREA TO LAKE LIVINGSTON. THESE WERE PART OF A LARGE AREA OF RAIN AND THUNDERSTORMS THAT STRECHED FROM THE COAST WEST OF FREEPORT ACROSS SOUTHEAST TEXAS TO THE TOLEDO BEND LAKE AND INTO CENTERAL TEXAS. THESE WERE MOVING TO THE NORTH AT 30 MILES AN HOUR. MOTORISTS ARE URGED TO SLOW DOWN ON RAIN SLICK STREETS AND BE ALERT FOR MINOR FLOODING OF SOME LOW LYING AREAS. STAY TUNED FOR LATER STATEMENTS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 25, 5:32 AM CST | Severe Thunderstorm Warning | HGX | Montgomery | 43 min |
| Nov 25, 6:03 AM CST | Flash Flood Warning | HGX | Montgomery | 117 min |
| Nov 25, 6:21 AM CST | Tornado Warning | HGX | Wharton | 54 min |
| Nov 25, 8:05 AM CST | Severe Thunderstorm Warning | HGX | Brazoria | 40 min |
| Nov 25, 8:10 AM CST | Flash Flood Warning | HGX | Harris | 2 hr |
| Nov 25, 8:27 AM CST | Severe Thunderstorm Warning | HGX | Galveston | 63 min |
| Nov 25, 8:37 AM CST | Severe Thunderstorm Warning | HGX | Chambers | 68 min |
Nearby
Flash Flood Warnings in Texas, 1987Every flash flood 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.