Flash Flood Warning 24, NWS Houston/Galveston, TX

Issued

Jun 7, 2001, 11:48 PM CDT (04:48 UTC)

Expired

Jun 8, 2001, 2:45 AM CDT

In force

3 hr

Issued by

NWS Houston/Galveston, TX

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Liberty County, TX

The Houston radar (KHGX), 82 km from the middle of the area, began a volume at 04:51 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 080456
FFWHOU
TXC291-080745-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1148 PM CDT THU JUN 7 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LIBERTY COUNTY IN SOUTHEAST TEXAS

* UNTIL 245 AM CDT

* AT 1140 PM CDT...DOPPLER RADAR INDICATED VERY HEAVY RAINFALL OVER
  GALVESTON BAY HEADED INTO LIBERTY COUNTY ALONG THE SAME PATH OVER 
WHICH
  3 TO 4 INCHES OF RAIN FELL BETWEEN 8 AND 11 PM.

* FLOODING IS EXPECTED IN OR NEAR...
  AMES...DAISETTA...DEVERS...DAYTON

NEW THUNDERSTORM DEVELOPMENT IN GALVESTON COUNTY AND OVER GALVESTON 
BAY WILL BE MOVING NORTHEAST INTO LIBERTY COUNTY BY 1215 AM.  THESE 
STORMS WILL TRACK OVER ALMOST EXACTLY THE SAME PATH AS THE STORMS 
THAT TRAVERSED THE COUNTY BETWEEN 8 AND 11 PM... PRODUCING 3 TO 4 
INCHES OF RAIN IN THAT 3 HOUR PERIOD.  EXPECT THE APPROACHING STORMS 
TO PRODUCE AN ADDITIONAL 2 TO 3 INCHES OF RAIN BETWEEN LIBERTY AND 
DEVERS BY 245 AM.

DO NOT CROSS ANY LOCATION WHERE WATER COVERS THE ROAD

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 3028 9470 2992 9457 2993 9497 3031 9502
          3027 9472

NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Jun 7, 8:15 PM CDT, 3 hours 33 minutes earlier.

SOUTHEAST TEXAS FORECAST DISCUSSION...REMOVED CAUTION FOR BAYS
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
815 PM CDT THU JUN 7 2001

ONLY MINOR CHANGES IN 9 PM UPDATE...

THE PERSISTENT MID LEVEL REMAINS OF T.D. ALLISON WILL CONTINUE  TO
BE THE MAIN PLAYER IN THE LOCAL FORECAST AREA INTO THE WEEKEND.
MOST RECENT CONSENSUS BASED MAINLY ON RADAR, SATELLITE & RUC - IS
THAT THE 700 MB CIRCULATION IS BEGINNING TO BECOME DISTENDED WITH A
NE-SW AXIS.  IF THIS IS SO, AND THE LATEST RUC AND ETA FORECASTS PAN
OUT, THIS MAY RESULT IN REDEVELOPMENT OR INTENSIFICATION OF
PRECIPITATION ON THE SOUTHEAST SIDE OF THIS 700MB CYCLONE AXIS,
MEANING (FOR TONIGHT) MAINLY IN A CORRIDOR FROM THE MATAGORDA BAY
AREA TO SOUTHERN LIBERTY COUNTY, INCLUDING METRO HOUSTON.  AND AS
HAS BEEN WELL COVERED IN THE NEWS, MUCH OF THE HOUSTON AREA HAS BEEN
THOROUGHLY DRENCHED DURING THE LAST TWO DAYS ALREADY.

HOWEVER, THIS DOESNT CALL FOR MUCH IF ANY CHANGE TO CURRENT
FORECAST, SINCE ENTIRE CWA IS UNDER A FLASH FLOOD WATCH - IT JUST
MEANS WE MAY GET INTO A FLASH FLOOD WARNING SITUATION A LITTLE
EARLIER THAN ANTICIPATED, POSSIBLY BETWEEN 9 PM & MIDNIGHT.

AND AS FAR AS THE FLASH FLOOD WATCH GOES, SINCE LARGE AREAS OF LIGHT
TO MODERATE CONTINUE TO ORBIT ABOUT THE 700MB CIRCULATION,
IMPOSSIBLE TO RULE OUT ANY AREA IN THE CWA AS NOT AT RISK, ALTHOUGH
THE STRIP OF COUNTIES ON THE FAR WESTERN EDGE OF THE FORECAST AREA
HAVE YET TO REALLY RECEIVE COPIOUS RAINS FROM THIS SYSTEM.  HOWEVER,
THE CURRENT TREND OF THE MID LEVEL CIRCULATION TO SLIP GRADUALLY TO
THE SOUTHWEST MAY BRING THEM INTO THE ACT YET.

ELSE, NOT MUCH CHANGED IN THE 18Z RUNS REGARDING THE
QUASI-STATIONARY NATURE OF THE REMAINS OF THE T.D. AND IN PARTICULAR
THE MID & UPPER LEVEL CIRCULATIONS, WHICH MAY PRESENT A PRECIP
PROBLEM INTO NEXT WEEK.

38/36/30/48

.KHGX...FLASH FLOOD WATCH ALL OF SOUTHEAST TEXAS THROUGH
        TONIGHT.
        SCEC 0-60 NM WATERS.

PRELIMS...
CLL TT 072/082 072/082 072 877
IAH TT 073/082 073/082 072 877
GLS TT 075/084 075/084 075 877

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.