Alert archive / Texas / Flash Flood Warnings in 1998
Flash Flood Warning 69, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Oct 4, 1998, 10:51 PM CDT for Galveston County, Texas. It was in force for 119 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Oct 4, 1998, 10:51 PM CDT (03:51 UTC)
- Expired
- Oct 5, 1998, 12:50 AM CDT
- In force
- 119 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Galveston County, TX
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 3.9 hours before the alert went out and 180 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
- 179 J/kg
- Mixed-layer CIN
- -183 J/kg
- Mixed-layer LCL
- 745 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 259 m²/s²
- 0-3 km storm-relative helicity
- 434 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHOU 050350 FFWHOU TXC167-050550- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1051 PM CDT SUN OCT 4 1998 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS RE-ISSUED A * FLASH FLOOD WARNING FOR... GALVESTON COUNTY IN SOUTHEASTERN TEXAS * UNTIL 1250 AM CDT * AT 1050 PM... NATIONAL WEATHER SERVICE RADAR INDICATED SHOWERS AND THUNDERSTORMS WITH VERY HEAVY RAIN WIDESPREAD OVER THE COUNTY...AND MORE MODERATE TO HEAVY SHOWERS MOVING ONSHORE FROM THE GULF. THROUGH 1230 AM...AN ADDITIONAL 1 TO 3 INCHES COULD FALL OVER ALREADY SATURATED GROUND. * FLOODING IS ALREADY OCCURRING IN A NUMBER OF SPOTS IN THE COUNTY. THIS ADDITIONAL MODERATE TO HEAVY RAIN WILL CAUSE WATER LEVELS TO RISE...OR AT LEAST REMAIN STEADY. BE ALERT FOR HIGH STANDING WATER ON ROADWAYS...AND FOR INUNDATION OF LOW LYING POORLY DRAINED AREAS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAlDWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. END
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.
NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Oct 4, 8:35 PM CDT, 2 hours 16 minutes earlier.
Area forecast discussion, Oct 4, 8:35 PM CDT, 2 hours 16 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 835 PM CDT SUN OCT 4 1998 BUSY NIGHT HERE AT THE WFO. MOISTURE RICH ATMOSPHERE AND UPR DIFLUENCE SEEM TO COMBINE WITH AN AREA OF SFC CONVERGENCE ALG THE I-45 CORRIDOR TO PRODUCE HEAVY RAINFALL IN THE SE PTN OF OUR CWA. THE AREA OF HEAVIEST RAINFALL APPEARS TO HAVE GOTTEN A KICK IN THE LAST HALF HOUR...AND HOPEFULLY WILL EXIT THE CWA WITHIN THE HOUR. HAVENT HAD TIME FOR AN EXHAUSTIVE OVERVIEW OF THE MODELS...BUT AM SKEPTICAL OF THE DRYING BEING INDICATED LATE TNGT INTO TMRW BY THE ETA. ITS BEEN OFF ON THIS FOR THE LAST TWO DAYS. NGM HOLDS MOISTURE IN...AND WITH A DEEP SLY FLOW OFF THE GULF...THIS SOLN SEEMS MOST REASONABLE. ANOTHER VORT LOBE IS SLATED TO CROSS THE AREA TMRW. COULD SEE ANOTHER ROUND OF RW/TRW...SOME WITH HVY RAIN. ANOTHER ONE IS ON OUR DOORSTEP BY 12Z TUE. SIGH. CAN LOWER POPS NRN ZONES FOR THE NIGHT. LEAVE THEM ALONE ELSW... SHD SEE REDEVELOPMENT AGAIN ALG COAST BY DAWN...AS WAS THE CASE PREV TWO NIGHTS. PRELIMS... CLL B/B E/E 075/092 074/088 1335 IAH E/B E/E 074/092 075/088 3334 GLS B/B B/E 077/089 078/087 4334 SW B/B B/E 076/090 076/088 2223 (JACKSON/MATAGORDA)
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 4, 8:57 PM CDT | Flash Flood Warning | HGX | Galveston | 113 min |
| Oct 5, 12:58 AM CDT | Tornado Warning | HGX | Brazoria | 47 min |
| Oct 5, 1:32 AM CDT | Tornado Warning | HGX | Brazoria, Galveston, Harris | 28 min |
Nearby
Flash Flood Warnings in Texas, 1998Every flash flood warning in 1998
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.