Flash Flood Warning 22, NWS Houston/Galveston, TX

Issued

Jun 7, 2001, 10:44 PM CDT (03:44 UTC)

Expired

Jun 8, 2001, 1:45 AM CDT

In force

3 hr

Issued by

NWS Houston/Galveston, TX

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Walker County, TX

The Houston radar (KHGX), 151 km from the middle of the area, began a volume at 03:45 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 080353
FFWHGX
TXC471-080645-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1044 PM CDT THU JUN 7 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 145 AM CDT

* AT 1035 PM CDT...DOPPLER RADAR INDICATED HEAVY SHOWERS PRODUCING
  RAINFALL AMOUNTS OF TWO INCHES OR MORE PER HOUR OVER
  NORTHERN WALKER COUNTY.

* FLOODING IS EXPECTED IN OR NEAR...
  HUNTSVILLE

MUCH OF WALKER COUNTY HAS RECEIVED IN EXCESS OF 6 INCHES OF RAIN
SINCE TUESDAY.  RADAR ESTIMATES INDICATE AN ADDITIONAL ONE TO TWO
INCHES HAS FALLEN OVER THE NORTHWEST PART OF THE COUNTY FROM 7 TO 9
PM... AND HEAVIER SHOWERS HAVE PRODUCED AN ADDITIONAL TWO INCHES OF
RAIN JUST NORTH OF THE HUNTSVILLE AREA SINCE 10 PM.  THE HEAVIER
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE UNTIL AT LEAST 1
AM... PRODUCING A DANGEROUS FLASH FLOOD SITUATION.

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 3084 9541 3053 9536 3063 9580 3086 9582
          3088 9561

NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Jun 7, 8:15 PM CDT, 2 hours 29 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.