Alert archive / Texas / Flash Flood Warnings in 1990
Flash Flood Warning 6, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at May 31, 1990, 8:04 PM CDT for Polk County, San Jacinto County, Trinity County, Texas. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- May 31, 1990, 8:04 PM CDT (01:04 UTC)
- Expired
- Jun 1, 1990, 12:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Polk County, TX, San Jacinto 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 00:00Z, 1.1 hours before the alert went out and 175 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
- 11 J/kg
- Mixed-layer CIN
- -423 J/kg
- Mixed-layer LCL
- 2002 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 123 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 010305 FFWHOU TXC455-373-407-010500- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON TX 1004 PM CDT THU MAY 31 1990 THE NATIONAL WEATHER SERVICE IN HOUSTON HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL MIDNIGHT CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST TEXAS ...TRINITY COUNTY IN SOUTHEAST TEXAS ...WESTERN POLK COUNTY...NORTHERN SAN JACINTO COUNTY AT 950 PM CDT RADAR INDICATED THE RAINS HAVE ENDED OVER TRINITY AND POKE COUNIES. AN ISOLATED THUNDERSTORM AND PATCHY LIGHT RAIN WAS NOTED OVER SAN JACINTO COUNTY. ALTHOUGH THE RAINS HAVE ENDED OVER THE AREA SATELLITE AND RADAR INDICATED BETWEEN 4 AND 8 INCHES OF RAIN FALL IN THE AREA AND REPORTS FROM THE AREA INDICATE FLOODING IS STILL OCCURRING AND FLOODING WILL CONTINUE TO EFFECT THE AREA FOR ANOTHER FEW HOURS UNTILL THE WATER RECEEDS. THE TRINITY COUNTY SHERIFF DEPARTMENT REPORT MANY ROADS IN THE AREA ARE STILL FLOODED...HIGHWAY 59 AMONG THESE. POLK COUNTY SHERIFF DEPARTMENT REPORTED HIGHWAY 356 IS THE ONLY HIGHWASTILL UNDER WATER. SAN JACINTO COUNTY SHERIFF DEPARTMENT REPORTED HIGHWAY 190 NEAR POINT BLANK STILL FLOODED. 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 pFOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 7:48 PM CDT | Flash Flood Warning | HGX | Polk | 117 min |
| May 31, 8:03 PM CDT | Flash Flood Warning | HGX | Houston, Trinity | 117 min |
| May 31, 8:45 PM CDT | Flash Flood Warning | HGX | San Jacinto | 2 hr |
Nearby
Flash Flood Warnings in Texas, 1990Every flash flood warning in 1990
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.