Flash Flood Warning 14, NWS Houston/Galveston, TX

Issued

Jun 5, 2000, 2:29 AM CDT (07:29 UTC)

Expired

Jun 5, 2000, 4:30 AM CDT

In force

2 hr

Issued by

NWS Houston/Galveston, TX

Area

Whole counties

Counties Polk County, TX, San Jacinto County, TX, Trinity County, TX, Walker County, TX

The Houston radar (KHGX), 148 km from the middle of the area, began a volume at 07:32 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 050734
FFWHGX
TXC373-407-455-471-050930-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
229 AM CDT MON JUN 5 2000

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SAN JACINTO COUNTY IN SOUTHEAST TEXAS
  WALKER COUNTY IN SOUTHEAST TEXAS
  POLK COUNTY IN SOUTHEAST TEXAS
  TRINITY COUNTY IN SOUTHEAST TEXAS

* UNTIL 430 AM CDT

* AT 227 AM CDT...DOPPLER RADAR INDICATED MODERATE TO HEAVY RAINFALL
  OVER THESE COUNTIES.

* FLOODING IS EXPECTED IN OR NEAR...
  CORRIGAN...TRINITY...RIVERSIDE...GROVETON...HUNTSVILLE...
  LIVINGSTON...ONALASKA...AND SEBASTAPOL.

RADAR INDICATES A LARGE AREA OF SHOWERS AND A FEW THUNDERSTORMS OVER
THE WARNED AREAS. RAINFALL RATES HAVE DIMINISHED BUT WITH THE
ADDITIONAL RAINFALL ON TOP OF THE PRIOR HEAVY RAINS THE THREAT OF
FLASH FLOODING REMAINS HIGH.

DO NOT CROSS ANY LOCATION WHERE WATER COVERS THE ROAD! 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 RELVAY YOUR REPORT TO THE
NATIONAL WEATHER SERVICE.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Jun 4, 9:32 PM CDT, 4 hours 57 minutes earlier.

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
932 PM CDT SUN JUN 4 2000

HAVE BEEN TACKLING THE MAIN FORECAST PROBLEM OF THE NIGHT...THE
POTENTIAL FOR QUITE A BIT OF RAINFALL.  DID AN ANALYSIS OF THE 850
THROUGH 200 MB LEVELS AND NOTICED DEWPOINTS POOLING OVER THE STATE
FROM NEAR TXK SOUTHWEST TO THE BIG BEND.  THE MID LEVEL MOISTURE
POOLING WAS CENTERED BETWEEN THE SAN ANTONIO AREA AND THE BIG BEND.
THE LOW PRESSURE TROUGH WAS SITUATED IN THE SAME LOCATION THROUGH 500
MB...WITH THE 300 MB TROUGH APPROACHING THE STATE FROM THE NW. HELPING
TO VERIFY THIS ASSESSMENT...THE SOUNDINGS FOR CRP...DRT...AND FWD ALL
SHOW PW/S AROUND 1.8 AND K-INDICES FROM 35 TO 45.

AT THE SURFACE THE WEAK STATIONARY FRONT THAT HAS BEEN OVER THE
NORTHERN PORTION OF THE STATE WAS CURRENTLY DRIFTING SOUTH INTO
HOUSTON AND TRINITY COUNTIES... RIGHT WHERE THUNDERSTORMS WERE
AFFECTING THOSE AREAS. LIKE THE MESO-ETA HANDLING OF THE SITUATION
WITH PRECIP FORMING ALONG THIS BOUNDARY JUST AHEAD OF THE MAIN 500 MB
SHORTWAVE TROUGH.  THE BEST RAINFALL THEN LOOKS TO OCCUR OVER THE
NORTHERN HALF OF SETX OVERNIGHT...THEN PUSH TOWARD THE CENTRAL
SECTIONS TOWARD SUNRISE...THEN OVER THE SOUTHEAST HALF MONDAY.

WITH THIS IN MIND WILL KEEP THE FLASH FLOOD WATCH UP IN ITS CURRENT
CONFIGURATION...ALL OF SETX EXCEPT THE COASTAL COUNTIES.  WILL UPDATE
THE FORECAST TO MAINLY TWEAK THE TEMPERATURES...THE CLOUD COVER AND
DEWPOINTS IN THE MID 70S POINT TOWARD LOWS ONLY GETTING DOWN INTO
THE LOWER TO MID 70S.

.HGX...FLASH FLOOD WATCH ALONG AND NORTH OF A PIERCE TO HOUSTON TO
       LIBERTY LINE (TXZ163-164-176>179-195>200-210>213-226-227).

PL-40
45

Flash Flood Warnings in Texas, 2000Every flash flood warning in 2000

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.