Alert archive / Texas / Flash Flood Warnings in 2001
Flash Flood Warning 64, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Aug 30, 2001, 10:55 PM CDT for Jackson County, Wharton County, Texas. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 30, 2001, 10:55 PM CDT (03:55 UTC)
- Expired
- Aug 31, 2001, 4:45 AM CDT
- In force
- 6 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Jackson County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 127 km from the middle of the area, began a volume at 03:56 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.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 3.9 hours before the alert went out and 198 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3264 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 567 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KHGX 310353
FFWHOU
TXC239-481-310945-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1055 PM CDT THU AUG 30 2001
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
JACKSON COUNTY IN SOUTHEAST TEXAS
WHARTON COUNTY IN SOUTHEAST TEXAS
* UNTIL 445 AM CDT
* AT 950 PM CDT...DOPPLER RADAR CONTINUED TO SHOW VERY HEAVY RAINFALL
OVER JACKSON AND WHARTON COUNTIES. RADAR ESTIMATES 5 TO 6 INCHES
HAVE ALREADY FALLEN IN THE NORTHWEST PORTION OF JACKSON COUNTY...
AND IN THE EXTREME EASTERN AND WESTERN PORTIONS OF WHARTON COUNTY.
* FLOODING IS EXPECTED IN OR NEAR...
MORALES...CORDELE...LOUISE...EL CAMPO...RURAL LOCATIONS EAST
OF WHARTON.
SMALL CREEKS...STREAMS...BAYOUS..AND FARM-TO-MARKET OR OTHER
SECONDARY ROADS MAY FLOOD QUICKLY. 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 RELAY YOUR REPORT TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 2963 9617 2926 9591 2879 9665 2909 9694
2936 9642What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Aug 30, 8:52 PM CDT, 2 hours 3 minutes earlier.
Area forecast discussion, Aug 30, 8:52 PM CDT, 2 hours 3 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
852 PM CDT THU AUG 30 2001
FORECAST PROBLEM OF THE NIGHT CONTINUES TO BE EXTENT AND AMOUNT OF
RAINFALL. 00Z SURFACE ANALYSIS SHOWED A SURFACE TROUGH ALONG AND
JUST OFFSHORE OF THE UPPER TEXAS COAST. 00Z SOUNDINGS SHOW PW/S 2.1
TO 2.5 INCHES...850 MB DEWPOINTS OF 16 TO 18 CELSIUS...AND 700 MB
DEWPOINTS OF 4 TO 7 CELSIUS. WATER VAPOR INDICATED A SHORTWAVE
TROUGH MOVING IN FROM THE WEST WHILE THE UPPER CHARTS AT 00Z SHOWED
GOOD DIFFLUENCE OVER THE AREA. IR AND RADAR SHOWED THAT
REDEVELOPMENT WAS OCCURRING RIGHT OVER SE TX. THE 00Z SOUNDINGS ALSO
INDICATE A SEVERE WEATHER THREAT. WILL MENTION A CHANCE OF SEVERE
STORMS IN THE COASTAL COUNTIES WHERE THE GREATEST THREAT APPEARS TO
BE.
THE RAINFALL SHOULD CONTINUE AND WILL KEEP THE FLASH FLOOD WATCH IN
EFFECT FOR TONIGHT AND EXTEND IT INTO FRIDAY. THE THINKING HERE IS
THAT THE GREATEST THREAT WILL BE ACROSS THE SOUTHERN THIRD.
PL-40
31
.HGX...FFA ALL CWA TONIGHT AND FRIDAY.
SCEC 00 TO 20 NM HIGH ISLAND TO THE MATAGORDA SHIP CHANNEL.The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 7:05 PM CDT | Tornado Warning | HGX | Liberty | 25 min |
| Aug 30, 7:32 PM CDT | Tornado Warning | HGX | Chambers, Galveston | 43 min |
| Aug 30, 7:49 PM CDT | Tornado Warning | HGX | Brazoria, Galveston | 41 min |
| Aug 30, 8:20 PM CDT | Flash Flood Warning | HGX | Brazoria, Fort Bend, Galveston, Harris | 6 hr |
| Aug 30, 8:25 PM CDT | Tornado Warning | HGX | Chambers | 35 min |
| Aug 30, 8:45 PM CDT | Tornado Warning | HGX | Brazoria | 45 min |
| Aug 30, 9:07 PM CDT | Tornado Warning | HGX | Chambers | 38 min |
| Aug 30, 9:35 PM CDT | Tornado Warning | HGX | Chambers | 40 min |
| Aug 31, 1:05 AM CDT | Flash Flood Warning | HGX | Brazoria, Fort Bend, Galveston, Harris | 6 hr |
| Aug 31, 3:45 AM CDT | Flash Flood Warning | HGX | Jackson, Wharton | 6 hr |
| Aug 31, 8:30 AM CDT | Flash Flood Warning | HGX | Colorado, Jackson, Matagorda, Wharton | 3 hr |
| Aug 31, 9:55 AM CDT | Flash Flood Warning | HGX | Brazoria, Fort Bend | 3 hr |
| Aug 31, 11:27 AM CDT | Flash Flood Warning | HGX | Jackson, Matagorda, Wharton | 3 hr |
| Aug 31, 1:00 PM CDT | Flash Flood Warning | HGX | Brazoria, Fort Bend | 3 hr |
| Aug 31, 1:52 PM CDT | Tornado Warning | HGX | Chambers | 23 min |
| Aug 31, 2:28 PM CDT | Flash Flood Warning | HGX | Jackson, Wharton | 92 min |
| Aug 31, 3:55 PM CDT | Flash Flood Warning | HGX | Brazoria, Fort Bend, Jackson, Wharton | 2 hr |
| Aug 31, 5:58 PM CDT | Flash Flood Warning | HGX | Brazoria, Fort Bend, Jackson, Wharton | 3 hr |
Nearby
Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001
Sources
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.