Flash Flood Warning 9, NWS Houston/Galveston, TX

Issued

Jan 6, 1998, 2:29 PM CST (20:29 UTC)

Expired

Jan 6, 1998, 5:30 PM CST

In force

3 hr

Issued by

NWS Houston/Galveston, TX

Area

Whole counties

County Montgomery County, TX

The Houston radar (KHGX), 101 km from the middle of the area, began a volume at 20:34 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 062031
FFWHOU
TXC225-455-339-373-407-471-062330-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
229 PM CST TUE JAN 6 1998
 
THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  530 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST TEXAS
 
   ...HOUSTON COUNTY...TRINITY COUNTY
 
IN SOUTHEAST TEXAS
 
   ...MONTGOMERY COUNTY...POLK COUNTY...SAN JACINTO COUNTY
   ...WALKER COUNTY
 
AT 225 PM...SHOWERS AND THUNDERSTORMS CONTINUED TO DEVELOP OVER THE
AREA...PRODUCING LOCALLY HEAVY RAINS. THESE RAINS WERE MOVING NORTHEAST
AT 25 MPH. 1 TO 3 INCHES OF RAIN HAVE ALREADY FALLEN EARLIER TODAY AND
ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE EXPECTED THROUGH THE
REMAINDER OF THE AFTERNOON.
 
THERE HAVE ALREADY BEEN NUMEROUS REPORTS OF MINOR STREET FLOODING ACROSS
THE WARNED AREA AND THE THESE ADDITIONAL RAINS WILL INCREASE THE THREAT
OF MORE SERIOUS FLOODING.
 
THIS IS A DANGEROUS FLOOD SITUATION.  MOST FLASH FLOOD DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR
UNDERPASSES.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Jan 6, 9:37 AM CST, 4 hours 52 minutes earlier.

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
937 AM CST TUE JAN 6 1998

STRONG THUNDERSTORMS CONTINUING OVER THE AREA WITH VERY HEAVY RAINS
SO FAR IN CHAMBERS/LIBERTY/GALVESTON/HARRIS COUNTIES.  FLASH FLOOD
WATCH WILL CONTINUE THROUGH TONIGHT.

LL SSE FLOW WILL CONTINUE TO PUMP THE MOISTURE INTO THE AREA AS THE
UPPER LOW MOVES VERY SLOWLY SE AND BECOMES CUT-OFF.  THIS IS A VERY
DANGEROUS PATTERN DUE TO THE NEARLY SATURATED AIRMASS AND GROUND AND
SLOW UPPER LEVEL MOVEMENT.  RR OF JET PRODUCING COPIOUS LIFT OVER THE
NRN 2/3RDS OF THE AREA. THIS UPPER PATTERN WILL BECOME COUPLED AS THE
SUBTROPICAL JET CUTS ACROSS S TX AND INTO THE GULF THIS AFTERNOON.
OUR SAVING GRACE MAY BE TO GET THE RAIN-COOLED AIR TO PUSH SOUTH OF
THE AREA BUT THIS DREAM LOOKS LIKE IT WILL GO DOWN THE PROVERBIAL
DRAIN DUE TO THE CUTOFF LOWS SLOW MOVEMENT.  WILL COOR WITH SAT ON
UPDATE FOR FFA.  NEW 12Z RUNS HAVE SLOWED THINGS DOWN SIGNIFICANTLY
AND FORESEE THE RAIN CONTINUING THROUGH TONIGHT.

WILL UPDATE POPS FOR TODAY AND TONIGHT AND WILL NEED TO KEEP SVR
MENTIONED THROUGH TONIGHT.

45

PRELIMS...
CLL F-R/T E/E 069/052 053/040 053 ++42
IAH F-T/T E/E 072/054 056/040 054 ++42
GLS F-T/T E/E 069/059 060/045 052 ++42

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.