Alert archive / Texas / Flash Flood Warnings in 1997
Flash Flood Warning 73, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Oct 13, 1997, 3:37 AM CDT for Waller 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
- Oct 13, 1997, 3:37 AM CDT (08:37 UTC)
- Expired
- Oct 13, 1997, 6:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Waller County, TX
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 8.6 hours before the alert went out and 269 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
- 983 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHOU 130838 FFWHOU TXC473-131145- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 337 AM CDT MON OCT 13 1997 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 645 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST TEXAS ...WALLER COUNTY AT 330 AM...A LINE OF SHOWERS AND THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL WILL BE MOVING INTO WALLER COUNTY BY 400 AM. RAINFALL RATES WILL RUN 1 TO 2 INCHES PER HOUR...WITH ISOLATED TOTALS UP TO 3 INCHES PER HOUR. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH 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 Oct 13, 2:43 AM CDT, 54 minutes earlier.
Area forecast discussion, Oct 13, 2:43 AM CDT, 54 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 240 AM CDT MON OCT 13 1997 CDFNT ON THE MOVE. AT 2AM LCTD FM 30 NW OF CLL TO NR AUS TO SOUTH OF OF DEL RIO MOVING AT 20 MPH. EXPECT CDFNT TO PUSH THRU CLL BTWN 08-09Z AND INTO INTERCONTINENTAL ARND 12-13Z AND OFF THE COAST 15-16Z. WILL NEED TO KEEP FFA UP FOR SRN ZNS THRU MON AM. EXPECT DRIER AND MUCH COOLER TEMPS TO FILTER INTO REGION AFT FROPA. STILL THINK THERE IS SLIGHT CHC OF SVR ALG SQUALL LINE MAINLY DUE TO STG GUSTY WINDS WITH FAST MOVING TRW. NEED TO KEEP SVR IN ZNS AHD OF CDFNT. SKIES SHOULD BECOME PTCLDY NW ZNS THIS AFTN AND CLR TONIGHT ACRS REGION. 34 PRELIMS... CLL E-B/V U/V 075/047 070/048 30P00 RAIN ENDING IAH T-E/V U/V 078/050 071/048 +000 FFA AM/PSBL SVR AM GLS T-E/V U/V 080/063 073/065 +000 FFA AM/PSBL SVR AM
In the hours before
Special weather statement, Oct 12, 10:20 PM CDT, 5 hours 17 minutes before
TXZ163-164-176>179-195>200-210>214-226-227-235>238-131000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1020 PM CDT SUN OCT 12 1997 THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS ACROSS ALL OF SOUTHEAST TEXAS LATE TONIGHT INTO MONDAY MORNING. A LINE OF SHOWERS AND THUNDERSTORMS WAS DEVELOPING LATE THIS EVENING ALONG A PREFRONTAL TROUGH THAT WAS AHEAD OF A STRONG COLD FRONT. AT 10 PM THIS TROUGH WAS LOCATED NEAR A DALLAS/FORT WORTH TO DEL RIO LINE. OTHER SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE AHEAD OF THIS PREFRONTAL TROUGH ACROSS THE AREA. AS THESE STORMS DEVELOP AND MOVE INTO THE VERY MOIST AND UNSTABLE AIRMASS OVER SOUTHEAST TEXAS...SOME OF THE STORMS MAY BECOME SEVERE LATER TONIGHT. THE SQUALL LINE ASSOCIATED WITH THE PREFRONTAL TROUGH IS EXPECTED TO MOVE INTO THE COLLEGE STATION AREA BETWEEN 2 AND 4 AM...THE HOUSTON METROPOLITAN AREA BETWEEN 5 AND 7 AM...THEN TO THE COAST AFTER 9 AM. HOWEVER...SCATTERED SHOWERS AND THUNDERSTORMS MAY BEGIN AFFECTING THE AREA WELL IN ADVANCE OF THE SQUALL LINE. THE MAIN SEVERE WEATHER THREAT WILL BE FROM STRONG DAMAGING WINDS ASSOCIATED WITH THE SQUALL LINE. A FLOOD AND FLASH FLOOD WATCH IS ALSO IN EFFECT FOR ALL OF SOUTHEAST TEXAS TONIGHT. IF YOU OBSERVE SEVERE WEATHER PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY TUNED TO NOAA WEATHER RADIO OR OTHER RELIABLE NEWS SOURCES FOR THE LATEST INFORMATION AND UPDATES.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 2:56 AM CDT | Flash Flood Warning | HGX | Austin, Colorado, Jackson | 3 hr |
| Oct 13, 2:56 AM CDT | Flash Flood Warning | HGX | Brazos, Grimes, Madison, Washington | 3 hr |
| Oct 13, 2:56 AM CDT | Flash Flood Warning | HGX | Burleson | 3 hr |
| Oct 13, 4:27 AM CDT | Flash Flood Warning | HGX | Fort Bend, Harris, Wharton | 4 hr |
| Oct 13, 4:27 AM CDT | Flash Flood Warning | HGX | Montgomery, Walker | 4 hr |
| Oct 13, 4:33 AM CDT | Flash Flood Warning | HGX | Matagorda | 4 hr |
| Oct 13, 5:56 AM CDT | Flash Flood Warning | HGX | Jackson | 119 min |
| Oct 13, 6:32 AM CDT | Flash Flood Warning | HGX | Liberty, Polk, San Jacinto | 4 hr |
| Oct 13, 6:32 AM CDT | Flash Flood Warning | HGX | Chambers, Galveston | 4 hr |
| Oct 13, 6:32 AM CDT | Flash Flood Warning | HGX | Brazoria | 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.