Flash Flood Warning 72, NWS Houston/Galveston, TX

Issued

Oct 6, 1998, 5:24 AM CDT (10:24 UTC)

Expired

Oct 6, 1998, 7:25 AM CDT

In force

2 hr

Issued by

NWS Houston/Galveston, TX

Area

Whole counties

County Colorado County, TX

The Houston radar (KHGX), 141 km from the middle of the area, began a volume at 10:27 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

000 
TTAA00 KHOU 061023
FFWHOU
TXC089-061225-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
524 AM CDT TUE OCT 6 1998

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  COLORADO COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 725 AM CDT

* AT 520 AM CDT... NATIONAL WEATHER SERVICE RADAR INDICATED SHOWERS
  AND THUNDERSTORMS CONTAINING VERY HEAVY RAIN ACROSS WESTERN AND
  CENTRAL COLORADO COUNTY... MOVING EAST AT 15 MPH.

* RADAR INDICATES RAINFALL RATES OF 2 TO 3 INCHES PER HOUR...
  ESPECIALLY WEST OF A LINE FROM FRELSBURG TO COLUMBUS TO SHERIDAN.
  ADDITIONAL STORMS IN LAVACA COUNTY ARE MOVING TO THE NORTHEAST INTO
  COLORADO COUNTY AND WILL LIKELY PRODUCE ANOTHER 1 TO 2 INCHES OF
  RAIN WHICH WILL LEAD TO FLASH FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
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.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Oct 6, 2:51 AM CDT, 2 hours 33 minutes earlier.

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
205 AM CDT TUE OCT 6 1998

PLEASE AMEND CLL TEMPS AS WIND SHIFT HAS DROPPED TEMPS RAPIDLY.  SEE
UPDATED PRELIMS.

MDLS ARE IN GENERAL AGREEMENT WITH RAIN TODAY BUT DIVERGE
SIGNIFICANTLY FOR TONIGHT AND WED AM.  ETA IS THE FASTEST IN DRYING
THINGS OUT...WHILE NGM KEEPS THE RAIN GOING INTO WED AM AND PRODUCES
AN OVERRUNNING SITUATION.  AVN SOLN LEANS CLOSER TO THE ETA BUT ENDS
PRECIP SOMETIME THIS EVENING.  PW'S ARE FCST TO REMAIN AROUND 2
INCHES TODAY AND COUPLED WITH BROAD DIFFLUENCE ALOFT AND RRQ RAIN
APPEARS LIKELY...LOCALLY HEAVY.  WOULD LIKE TO EXPAND THE FFA TO
COVER THE ENTIRE FCST AREA FOR TODAY.  X-SECTIONS SHOW AIR MASS IS
SATURATED FROM BOTTOM TO TOP...SO THREAT FOR DOWNBURST WINDS HAS
DIMINISHED.  WIND SHEAR NOT NEARLY AS IMPRESSIVE AS FCST YESTERDAY
SO WILL REMOVE MENTION OF SVR FROM ZONES.  MAIN FCST PROBLEM IS WHEN
TO END THE RAIN AND THE EFFECTS ON AREA TEMPS.  CURRENT THINKING IS
TO END PRECIP IN CLL AROUND SUNSET...IAH LATE EVENING AND GLS AFTER
MIDNIGHT.  HAVE LEANED TOWARD ETA/AVN SOLN FOR WED WHICH DRIES
THINGS OUT AND KEEPS TEMPS BELOW 80 DEGREES.  43/42

PRELIMS...
CLL T/B U/A 065/055 079/052  +200  1ST PERIOD: LOCALLY HEAVY RAIN
TEMPERATURES NEARLY STEADY OR SLOWLY FALLING TO AROUND 60.

IAH T/C B/A 076/059 079/052  +400  1ST PERIOD: LOCALLY HEAVY RAIN
TEMPERATURES NEARLY STEADY OR SLOWLY FALLING INTO THE 60S.

2ND PERIOD:  MAINLY EVENING

GLS T/W B/A 086/066 080/060  +6-0  1ST PERIOD: 30 PERCENT THIS
MORNING...INCREASING TO 100 PERCENT BY AFTERNOON. LOCALLY HEAVY RAIN
THIS AFTERNOON.  TEMPERATURES FALLING INTO THE 70S THI^S AFTERNOON.

Flash Flood Warnings in Texas, 1998Every flash flood warning in 1998

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; radar from the NEXRAD Level II archive.