Flash Flood Warning 10, NWS Houston/Galveston, TX

Issued

Jun 6, 2001, 1:08 AM CDT (06:08 UTC)

Expired

Jun 6, 2001, 7:00 AM CDT

In force

6 hr

Issued by

NWS Houston/Galveston, TX

Area

Whole counties; the outline is the Mesonet’s reconstruction

Counties Chambers County, TX, Galveston County, TX, Harris County, TX, Liberty County, TX, Montgomery County, TX, Polk County, TX, San Jacinto County, TX, Trinity County, TX, Walker County, TX

The Houston radar (KHGX), 117 km from the middle of the area, began a volume at 06:10 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 
WGUS54 KHGX 060609
FFWHGX
TXC071-167-201-291-339-373-407-455-471-061200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
108 AM CDT WED JUN 6 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SAN JACINTO COUNTY IN SOUTHEAST TEXAS
  WALKER COUNTY IN SOUTHEAST TEXAS
  GALVESTON COUNTY IN SOUTHEAST TEXAS
  POLK COUNTY IN SOUTHEAST TEXAS
  HARRIS COUNTY IN SOUTHEAST TEXAS
  MONTGOMERY COUNTY IN SOUTHEAST TEXAS
  LIBERTY COUNTY IN SOUTHEAST TEXAS
  CHAMBERS COUNTY IN SOUTHEAST TEXAS
  TRINITY COUNTY IN SOUTHEAST TEXAS

* UNTIL 700 AM CDT

* AT 1250 AM CDT...FLOODING WAS ONGOING IN SOME AREAS OF HARRIS AND
  GALVESTON COUNTIES. RADAR INDICATED THAT THE HEAVIEST RAINFALL
  ASSOCIATED WITH TROPICAL STORM ALLISON MOVED NORTH INTO
  MONTGOMERY...NORTHERN LIBERTY...POLK...SAN JACINTO...TRINITY AND
  WALKER COUNTIES. THIS AREA WILL LIKELY DRIFT NORTH OVERNIGHT INTO
  HOUSTON COUNTY. TOTAL RAINFALL ACCUMULATIONS IN SOUTHEAST HARRIS
  AND GALVESTON COUNTIES HAVE EXCEEDED 7 INCHES AT MANY LOCATIONS...
  WITH SOME TOTALS OF 11.30 INCHES ALONG CLEAR CREEK AND 12 INCHES
  IN SANTA FE.

* OVERNIGHT ADDITIONAL RAINFALL OF 2 TO 4 INCHES WILL BE COMMONPLACE
  WITH SOME AREAS RECEIVING 6 TO 8 INCHES IN THE WARNED AREA...
  MAINLY IN MONTGOMERY...SAN JACINTO...POLK...AND TRINITY COUNTIES.

THIS IS A VERY DANGEROUS SITUATION...DO NOT ATTEMPT TO TRAVEL UNLESS
ABSOLUTELY NECESSARY...DO NOT CROSS ANY LOCATION WHERE WATER COVERS
THE ROAD!  SMALL CREEKS...STREAMS...BAYOUS...UNDERPASSES...AND
FEEDER ROADS FLOOD QUICKLY.

USE EXTRA CAUTION AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DEPTH
AND SPEED OF FLASH FLOOD WATERS.

PLEASE REPORT FLOODING TO THE COUNTY SHERIFF...LOCAL POLICE...OR
DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 3122 9493 3082 9460 3004 9466 2943 9503
          3006 9573 3085 9583

NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Jun 5, 8:45 PM CDT, 4 hours 23 minutes earlier.

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
845 PM CDT TUE JUN 5 2001

AS PER LAST TPC BULLETIN... THE SURFACE CIRCULATION OF ALLISON IS
NEARLY STATIONARY AROUND 60 MILES SSW OF GALVESTON, BUT APPARENTLY
DRIFTING SLOWLY N AND LOSING A LITTLE STRENGTH AT 830 PM.  WILL HAVE
TO WAIT FOR NEXT TPC DISCUSSION FOR MORE DETAILS.  ANYWAY, LATEST
POSITION  ALMOST AS EASY TO PIN DOWN BASED ON BUOY/SFC OBS VS.
RADAR, AS THERE IS ALMOST NO CONVECTION ACTUALLY AROUND THE STORM
CENTER.  MAX SUSTAINED WINDS STILL GIVEN BY TPC AS 60KT, BUT THESE
MAGNITUDES MUST BE VERY TIGHT TO ACTUAL CENTER... AS STRONGEST
OBSERVED WINDS ALONG UPPER COAST ARE JUST AT OR BELOW MINIMUM TS
STRENGTH.  MOST OF THE HEAVIER WEATHER IS WELL TO NORTH, EAST, AND
SOUTHEAST OF STORM CENTER. FOR MORE PARTICULARS...SEE LATEST HPC
GUIDANCE AND OUR HLSS.

WILL WAIT FOR NEXT TPC TO UPDATE ZONES, SO UPDATE WILL BE A LITTLE
AFTER 9 PM, BUT BIGGEST CHANGE WILL LIKELY TO BE TO DROP HIGH WIND
WARNING FOR INLAND COUNTIES WHERE IT IS CURRENTLY FORECAST AND RAISE
POPS FOR NORTHERN COUNTIES AS HEAVY RAIN AREA MOVES NORTH.  NONE OF
THE MODELS ARE LIKELY TO BE HANDLING THE INTENSITY OF THE SURFACE
LOW WELL, BUT INDICATE A TREND OF THE SURFACE CENTER TO PROBABLY
MEANDER INLAND BY MIDNIGHT WITH A RAPID DECREASE IN INTENSITY.  AT
ANY RATE, DOES NOT APPEAR THAT THE MAGNITUDE OF SURFACE WINDS WILL
REACH WARNING CRITERIA INLAND.

BIGGEST PROBLEM IN VERY SHORT TERM REMAINS TORRENTIAL RAINS.  HAVE
HAD IN EXCESS OF 10 OF RAIN IN SOME AREAS TODAY, MANY RECEIVING 6
OR MORE IN THE 6 HOURS ENDING AROUND 7 PM.  THE AXIS OF HEAVIER
PRECIP APPEARS TO BE CLOCKING AROUND NORTHERN AXIS OF MID LEVEL
(700MB) CIRCULATION WHICH IS WELL NORTH OF THE POSITION OF THE
SURFACE T.S. CENTER.  HENCE WILL KEEP CURRENT CONFIG OF FLASH FLOOD
WATCH AT THE MOMENT. AS FOR WHAT FOLLOWS BEHIND ALLISON, PRESUMING
LANDFALL TONIGHT AND JUST DEALING WITH A PRECIP ENGINE OVER THE CWA,
STILL APPEARS THAT PRECIP MAY CENTER NORTH AND EAST OF MID LEVEL
LOW.  ETA SEEMS TO CONTINUE TO HAVE A BETTER HANDLE ON THE
DISTRIBUTION, IF NOT THE MAGNITUDE, OF THE PRECIP, AND SO WILL
CONTINUE WITH CATEGORICAL POPS MOST OF CWA, TAPERING OFF GRADUALLY
FROM SW IN 2ND AND 3RD PERIODS.

PLANNING NO CHANGES TO EXTENDED.

.KHGX...FLASH FLOOD WATCH THRU WED ALONG AND E OF A LINE FROM
        NORMANGEE TO SWEENY.

        TROPICAL STORM WARNING SARGENT EWD.

PRELIMS...
CLL TT 071/085 071/085 071 776
IAH TT 073/085 073/085 073 887
GLS TT 075/083 075/083 076 887

Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001

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.