Alert archive / Texas / Flash Flood Warnings in 1997
Flash Flood Warning 39, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Apr 25, 1997, 8:55 PM CDT for Chambers County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 25, 1997, 8:55 PM CDT (01:55 UTC)
- Expired
- Apr 26, 1997, 12:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Chambers County, TX
The radar
The Houston radar (KHGX), 47 km from the middle of the area, began a volume at 01:56 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
Lake Charles Mun, LA (KLCH), launched 00:00Z, 1.9 hours before the alert went out and 149 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 501 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 366 m²/s²
- 0-3 km storm-relative helicity
- 631 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHOU 260153 FFWHOU TXC071-260500- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 855 PM CDT FRI APR 25 1997 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL MIDNIGHT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST TEXAS ...CHAMBERS COUNTY STRONG THUNDERSTORMS...PRODUCING VERY HEAVY RAIN WILL CONTINUE TO MOVE THROUGH CHAMBERS COUNTY. DOPPLER RADAR INDICATES BETWEEN 4 AND 6 INCHES OF RAIN OVER THE WESTERN HALF OF CHAMBERS COUNTY SINCE EARLY AFTERNOON. ANOTHER 1 TO 3 INCHES OF RAIN IS POSSIBLE THROUGH MIDNIGHT. LOOP 207 SOUTH AT FM 565 NEAR MONT BELVIEU IS CLOSED DUE TO HIGH WATER. BE &ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLASH FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
What 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 Apr 25, 8:15 PM CDT, 40 minutes earlier.
Area forecast discussion, Apr 25, 8:15 PM CDT, 40 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 815 PM CDT FRI APR 25 1997 CURRENT WX SITUATION HAS KEPT ANALYSIS BRIEF AND STAFF VERY BUSY. DANGEROUS FLOODING SITUATION FOR HOUSTON METRO AREA AS KHGX STP INDICATES 6 TO 8 INCHES OF RAIN FROM DAYTON TO PEARLAND. FCST REMAINS BLEAK AS MORE RAIN AND THE POTENTIAL FOR SEVERE WX CONTINUES. WL LOWER POPS FOR CLL AREA TONITE AS EXPCT THEM TO BE JUST WEST OF HVY RAIN AXIS. NEW SVR TSTM WATCH ISSUED BY SPC TIL 2 AM. WOULD NOT BE SURPRISED IF AREA SEES A BRIEF BREAK TONIGHT BEFORE THE NEXT S/WV ROTATING AROUND THE DEEP UPPER TROUGH APPROACHES SE TX AROUND 09Z SAT AM. WL CONT TO MONITOR COASTAL FLOODING...SO FAR THE SITUATION HAS REMAINED MANAGEABLE. OTHERWISE PREVIOUS DISCUSSION HAS THINGS WELL IN HAND. PRELIMS... CLL T/T T/T 56/74/65/75 60/80/80/60 IAH T/T T/T 63/75/65/78 100/80/80/70 GLS T/T T/T 68/75/68/75 100/80/80/70 36/43
In the hours before
Special weather statement, Apr 25, 8:24 PM CDT, 31 minutes before
TXZ211-237-210-227-213-200-511-236-199-179-178-212-226-214-238- 235-260730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 824 PM CDT FRI APR 25 1997 SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF SOUTHEAST TEXAS GENERALLY SOUTH OF A LIVINGSTON TO CONROE TO COLUMBUS LINE UNTIL 2AM SATURDAY MORNING. THIS THUNDERSTORM WATCH REPLACES THE TORNADO WATCH THAT EXPIRED AT 8PM. THE FOLLOWING COUNTIES IN SOUTHEAST TEXAS ARE INCLUDED IN THE WATCH AREA. POLK...SAN JACINTO...MONTGOMERY...WALLER...AUSTIN...COLORADO... JACKSON...WHARTON...FORT BEND...HARRIS...LIBERTY...CHAMBERS... GALVESTON...BRAZORIA AND MATAGORDA COUNTIES OF TEXAS. STRONG THUNDERSTORMS ARE CURRENTLY OCCURING GENERALLY EAST OF A LINE FROM PALACIOS TO CONROE TO TRINITY. THE MAIN THREAT FROM THESE THUNDERSTORMS IS HEAVY RAIN...POSSIBLE LARGE HAIL AND DAMAGING WINDS. ADDITIONAL THUNDERSTORMS HAVE DEVELOPED FURTHER WEST AND WILL MOVE INTO WESTERN PORTIONS OF SOUTHEAST TEXAS LATER TONIGHT.
Special weather statement, Apr 25, 8:25 PM CDT, 30 minutes before
TXZ211-237-210-227-213-200-511-236-199-179-178-212-226-214-238- 235-260730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 824 PM CDT FRI APR 25 1997 SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF SOUTHEAST TEXAS GENERALLY SOUTH OF A LIVINGSTON TO CONROE TO COLUMBUS LINE UNTIL 2AM SATURDAY MORNING. THIS THUNDERSTORM WATCH REPLACES THE TORNADO WATCH THAT EXPIRED AT 8PM. THE FOLLOWING COUNTIES IN SOUTHEAST TEXAS ARE INCLUDED IN THE WATCH AREA. POLK...SAN JACINTO...MONTGOMERY...WALLER...AUSTIN...COLORADO... JACKSON...WHARTON...FORT BEND...HARRIS...LIBERTY...CHAMBERS... GALVESTON...BRAZORIA AND MATAGORDA COUNTIES OF TEXAS. STRONG THUNDERSTORMS ARE CURRENTLY OCCURING GENERALLY EAST OF A LINE FROM PALACIOS TO CONROE TO TRINITY. THE MAIN THREAT FROM THESE THUNDERSTORMS IS HEAVY RAIN...POSSIBLE LARGE HAIL AND DAMAGING WINDS. ADDITIONAL THUNDERSTORMS HAVE DEVELOPED FURTHER WEST AND WILL MOVE INTO WESTEJRN PORTIONS OF SOUTHEAST TEXAS LATER TONIGHT.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 8:08 PM CDT | Flash Flood Warning | HGX | Brazoria, Galveston, Harris | 4 hr |
Nearby
Flash Flood Warnings in Texas, 1997Every flash flood warning in 1997
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.