Alert archive / Texas / Flash Flood Warnings in 1997
Flash Flood Warning 67, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Aug 7, 1997, 10:40 PM CDT for Austin County, Washington County, Texas. It was in force for 2 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
- Aug 7, 1997, 10:40 PM CDT (03:40 UTC)
- Expired
- Aug 8, 1997, 12:45 AM CDT
- In force
- 2 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Austin County, TX, Washington County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 3.7 hours before the alert went out and 276 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
- 3436 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 996 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHOU 080340 FFWHOU TXC015-477-080545- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1040 PM CDT THU AUG 7 1997 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1245 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL TEXAS ...NORTHERN AUSTIN COUNTY IN SOUTHEAST TEXAS ...WASHINGTON COUNTY AT 1037 PM...DOPPLER RADAR INDICATED AN AREA OF SHOWERS AND THUNDERSTORMS EXTENDING FROM CENTRAL WASHINGTON COUNTY JUST NORTH OF BRENHAM TO NORTHWEST AUSTIN COUNTY NEAR SHELBY. DOPPLER RADAR ESTIMATES AROUND 5 INCHES OF RAIN HAVE ALREADY FALLEN NEAR BRENHAM WITH TOTALS OF AROUND 3 INCHES EXTENDING SOUTH AND WEST INTO NORTHERN AUSTIN COUNTY. THE WASHINGTON COUNTY SHERIFFS OFFICE REPORTED MOST OF THE LOWER-LYING INTERSECTIONS UNDER WATER...WITH SEVERAL PEOPLE BEING PULLED OUT OF VEHICLES. 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. RV/DB &
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 Aug 7, 8:05 PM CDT, 2 hours 35 minutes earlier.
Area forecast discussion, Aug 7, 8:05 PM CDT, 2 hours 35 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 750 PM CDT THU AUG 7 1997 CONVECTION STILL ONGOING OVR NW ZNS. CELL MERGER OVR BURLESON COUNTY PRODUCED SVR TSTM. FNTL BOUNDARY EXTENDS ACROSS NRN ZNS TO CNTL TX AND FURTHER SWD TO NR DRT. VORTEX MOVG ALONG FNT NEWD OVR CNTL TX PRODUCING TSTMS AHEAD ALONG FNTL BOUNDARY WHERE ADAP SMC SHOWS VALUES TO 54 G/KM/HR. OVR OTHER AREAS OF FA...CONVECTION ALMOST NIL. CURRENT TREND OF TSTMS W OF FA SHOWS MOVMT TO E. EXPECT CONVECTION TO WEAKEN SOMEWHAT DUE TO LACK OF DAYTIME HEATING. HOWEVER...WEAK IMPULSE MOVING ALG THE FNT MAY BE ENOUGH TO SUSTAIN. WL ADJUST 1ST PD FCST AS FOLLOWS...NO CHANGE FOR CLL VCNTY. LOWER IAH TO 30 PERCENT. GLS TO 20 PERCENT. #37
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 7:34 PM CDT | Severe Thunderstorm Warning | HGX | Burleson | 41 min |
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.