Alert archive / Texas / Flash Flood Warnings in 1997
Flash Flood Warning 69, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Oct 11, 1997, 11:00 AM CDT for Matagorda 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
- Oct 11, 1997, 11:00 AM CDT (16:00 UTC)
- Expired
- Oct 11, 1997, 1:00 PM CDT
- In force
- 2 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Matagorda County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 4.0 hours before the alert went out and 176 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
- 915 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 537 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 117 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 111603 FFWHOU TXC321-111800- BULLETIN - EAS ACTIVATION REQUESTED FLOOD AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1100 AM CDT SAT OCT 11 1997 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A FLOOD AND FLASH FLOOD WARNING EFFECTIVE UNTIL 100 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST TEXAS ...WESTERN MATAGORDA COUNTY AT 1055 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF HEAVY RAINS EXTENDING FROM MATAGORDA BAY NORTH-NORTHWEST ACROSS PALACIOS TO BLESSING AND MIDFIELD. THIS AREA OF SHOWERS AND EMBEDDED THUNDERSTORMS WAS MOVING SLOWY TO THE EAST AT 10 MPH. RADAR ESTIMATES FROM 2 TO 3 INCHES OF RAIN HAS ALREADY FALLEN IN THE PALACIOS AREA THIS MORNING. WITH THE MODERATE TO HEAVY RAINS MOVING OVER THE SAME AREAS...WATER WILL RUNOFF ALREADY SATURATED GROUNDS FLOODING LOW LYING AREAS AND ROADWAYS QUICKLY. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
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 11, 9:52 AM CDT, 1 hour 8 minutes earlier.
Area forecast discussion, Oct 11, 9:52 AM CDT, 1 hour 8 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION ...CORRECTED FOR CFW... NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 952 AM CDT SAT OCT 11 1997 BAND(S) OF MODERATE TO HEAVY RAINS CONTINUE TO MOVE ACROSS THE AREA THIS MORNING. THIS PCPN LOOKS TO BE ASSOCAITED WITH A WEAK S/W EM- BEDDED IN THE FLOW ALOFT AND SEEMS TO BE MOVING ON A STEADY CLIP TO THE NE. RAINFALL RATES HAVE BEEN AOA 1/2 TO 1...BUT RAINFALL OVER OUR SRN COUNTIES HAVE BEEN HIGHER (2/HR). AS SUCH...AM A BIT CON- CERNED AS THESE AREAS (JACKSON/MATAGORDA/WHARTON) HAVE BEEN GETTING THE BRUNT OF THE RAINS DURING THIS EVENT. LOOKING AT RADAR LOOPS.. MORE RAINS LIKELY AS ECHOES WORK SLOWLY UP FROM THE MIDDLE TX COAST. WOULD LIKE TO RE-ISSUE THE FFA FOR SSWRN PORTIONS OF OUR FA AS WELL AS BUMPING POPS UP REGIONWIDE. CFW STILL LOOKS GOOD AND NO CHANGES WITH THAT. PLEASE REFER TO PRELIMS BELOW FOR THE DIVISIONS/DETAILS. 41 PRELIMS... ---------- CLL C/C/T/T 83/74 83/72 5367 (BRAZOS/BURLSN/GRIMES/MADSN/POLK/SANJAC/WALKER/WASH) IAH C/C/T/T 83/73 83/74 6367 (AUSTIN/HARRIS/LIBRTY/MONTGMRY/WALLER) - LOCALLY HVY RAIN TODAY GLS C/C/C/T 82/78 82/78 6356 (GALVESTN/CHAMBERS) - CFW, LOCALLY HVY RAIN TODAY SWN C/C/C/T 81/76 82/76 8456 (COLORADO/FTBEND/WHARTON) - FFA TODAY PSX C/C/C/T 81/76 82/76 8456 (BRAZORIA/JACKSON/MATAGORDA) - FFA, CFW TODAY
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.