Flash Flood Warning 84, NWS Houston/Galveston, TX

Issued

Sep 9, 2001, 11:55 AM CDT (16:55 UTC)

Expired

Sep 9, 2001, 2:00 PM CDT

In force

2 hr

Issued by

NWS Houston/Galveston, TX

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Colorado County, TX

The Houston radar (KHGX), 132 km from the middle of the area, began a volume at 16:58 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 091652
FFWHOU
TXC089-091900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON-GALVESTON TX
1155 AM CDT SUN SEP 9 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 200 PM CDT

* AT 1135 AM CDT...LAW ENFORCEMENT REPORTED MANY ROADS THROUGH OUT 
COLORADO COUNTY REMAINED CLOSED DUE TO HIGH WATER. SOME OF THE ROADS 
CLOSED INCLUDE:

FM 2434 AT SKULL CREEK
CR 106 AT SKULL CREEK
CR 215 NEAR OAKLAND
CR 105
HATTERMANN ROAD ALONG I-10

RADAR ESTIMATES OF 5 TO 6 INCHES OF RAIN HAS FALLEN OVER THE EASTERN 
HALF OF COLORADO COUNTY. ADDITIONAL RAIN OF A 1/2 INCH IS POSSIBLE 
EARLY THIS AFTERNOOM BEFORE THE RAIN ENDS BY MID AFTERNOON.

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 2961 9624 2942 9645 2957 9672 2983 9653

NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Sep 9, 9:54 AM CDT, 2 hours 1 minute earlier.

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
954 AM CDT SUN SEP 9 2001

MCS CURRENTLY OVER NORTHERN HALF OF SE TX AND CURRENTLY HAVE A FEW
FLASH FLOOD WARNINGS OUT.  THE FORECAST PROBLEM OF THE DAY CONCERNS
ITS MOVEMENT AND EFFECTS.

OVER THE PAST COUPLE OF HOURS THE CLOUD TOPS HAVE COOLED OVER MAINLY
THE SOUTHERN END OF THE SYSTEM.  THE SURFACE COLD FRONT LOOKS TO
HAVE STALLED OVER N TX AND THE HILL COUNTRY WHILE A MESO HIGH HAS
FORMED BEHIND THE MCS.  THE OUTFLOW BOUNDARY WAS NEARLY STATIONARY
OVER THE I-10 CORRIDOR BETWEEN 7 AND 9 AM...BUT OVER THE PAST HOUR
HAS BEGUN TO SLOWLY MOVE TOWARD THE COAST.  THE 12Z 200 AND 300 MB
ANALYSIS INDICATE SE TX WAS UNDER GOOD DIFFLUENCE AND THE ENTRANCE
REGION OF THE STRONG JET MOVING UP THE EAST SIDE OF THE TROUGH OVER
THE PLAINS...WHILE WATER VAPOR SHOWED A JET MOVING INTO WEST TEXAS.
WITH PW/S BETWEEN 2 AND 2.1 INCHES...LI/S AT -8...AND CAPE VALUES
BETWEEN 4000 AND 5000...FEEL THAT THE MAIN THREAT WILL CONTINUE TO BE
HEAVY RAIN WITH ISOLATED SEVERE POSSIBLE.

THE 12Z ETA SHOWS THAT THE SURFACE THETA-E RIDGE SHOULD REMAIN NEARLY
STATIONARY THIS AFTERNOON OVER SE TX.  FEEL THAT SHOWERS AND STORMS
WILL SPREAD TO THE COAST.  GIVEN THIS...WILL UPDATE THE FORECAST TO
EXTEND THE WATCH TO THE COAST AND UPDATE TEMPERATURES OVER THE
SOUTHERN HALF OF THE AREA.

.HGX...FFA SE TX.
       SCEC 00 TO 60 NM HIGH ISLAND TO THE MATAGORDA SHIP CHANNEL.

PL-40
43

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.