Alert archive / Texas / Flash Flood Warnings in 1998
Flash Flood Warning 34, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Feb 26, 1998, 2:40 AM CST for Washington 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
- Feb 26, 1998, 2:40 AM CST (08:40 UTC)
- Expired
- Feb 26, 1998, 5:40 AM CST
- In force
- 3 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Washington County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 8.7 hours before the alert went out and 291 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
- 1002 J/kg
- Mixed-layer CIN
- -324 J/kg
- Mixed-layer LCL
- 828 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Feb 26, 2:34 AM CST, 6 minutes earlier.
Area forecast discussion, Feb 26, 2:34 AM CST, 6 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 234 AM CST THU FEB 26 1998 COMPLICATED WX PATTERN ACRS TX THIS MRNG WITH LN OF STRNG TSTMS ALONG SFC TROF AXIS PUSHING ACRS FA WITH MORE DVLPMNT BEHIND THIS LN AS MAIN CF IS STILL BACK ACRS WEST CTNRL TX. ALSO...SFC LOW CONTS TO DEEPEN NEAR BRO AND PROGD TO PUSH UP THE TX COAST TDY. MAIN MID-UPR LOW HAS BECOME VERTICALLY STACKED OVR NE/SD AREA SO DONT EXPECT MUCH MVMNT OVR NXT 48HRS WITH TX RMNG UNDER MAIN TROF AXIS. BELIEVE KEY TO OUR WX IS THIS SFC LOW OVR BRO. MDLS TAKE IT UP THE TX COAST AND INTO SRN LA BY 18Z WITH AREA WNDS SHIFTING WEST AS CF PUSHES OFF UPR TX COAST ARND 18-19Z WITH SOME CLRG IN ITS WAKE. AT SAME TIME...850 MB WNDS SHIFT WEST WITH LAST VOR MAX PUSHING EAST & DRIER AIR ADVECTING IN FM WEST. THEREFORE...WILL KEEP CLDS & CHC SHWRS/TSTMS IN FA THRU 18Z THEN BECOME PTLY CLDY IN THE AFTN. WILL NOT MENTION PSBL SVR THIS MRNG AS MOISTURE AND INSTABILITY WILL CONT TO DECREASE. FAIR SKIES LOOK BEST TNGT WITH FEW HIGH CLDS ARND...BUT NOT BUYING NGMS RTRN FLOW...MOISTURE & CLDS BY 36-48HRS SINCE DONT BELIEVE LOW LVL WNDS WILL BE ABLE TO TURN WITH DEEP 990 MB SFC LOW STILL PARKED OVR IA/IL AREA. WILL STAY WITH PTCLY CLDY SKIES ON FRI SINCE NOT SURE WHAT MOISTURE WILL BE ABLE TO RIDE DOWN BACK SIDE OF UPR LONG TROF SITLL OVR TX. LOOKS LIKE ANOTHER STRNG SPD MAX WILL PUSH DOWN BACKSIDE OF TROF AXIS FRI NGT AND FINALLY KICK UPR LOW EWD. THIS SPD MAX SHUD BRING CLDS AND ANOTHER CHC OF RAIN BACK TO FCST FOR SAT BEFORE CLRG OUT BY SUN UNDER A DRIER NW FLOW ALOFT. LEANING TWRD COOLER AVN NUMBERS IN WAKE OF FROPA. 39 PRELIMS...(CHC SHWRS/TSTMS THRU NOONISH THEN BCMG PTLY CLDY AFTN) CLL T>B/A B/B 66/39 65/42 3002 IAH T>B/A B/B 67/41 65/43 3002 GLS T>B/A B/B 66/52 63/55 4002
In the hours before
Special weather statement, Feb 25, 9:31 PM CST, 5 hours 9 minutes before
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</html>Special weather statement, Feb 25, 9:31 PM CST, 5 hours 9 minutes before
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</html>Special weather statement, Feb 25, 11:45 PM CST, 2 hours 55 minutes before
TXZ163-164-177>179-198>200-210>214-226-227-235>238-261130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1145 PM CST WED FEB 25 1998 ...A SEVERE THUNDERSTORMS WATCH ISSUED FOR MUCH OF SOUTHEAST TEXAS... THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH EFFECTIVE UNTIL 6 AM THU FEB 26 1998 FOR PEOPLE IN THE FOLLOWING COUNTIES... ...GRIMES...WASHINGTON...AUSTIN...COLORADO...WALLER...WHARTON ...JACKSON...MATAGORDA...BRAZORIA...FORT BEND...MADISON...HOUSTON... WALKER... MONTGOMERY...HARRIS...GALVESTON...CHAMBERS...LIBERTY... SAN JACINTO...POLK...TRINITY A DEEPENING LOW PRESSURE SYSTEM OVER THE SOUTHERN RIO GRANDE AND A DRY LINE OVER SOUTH CENTRAL TEXAS ARE MOVING EASTWARD INTO AN INCREASINGLY UNSTABLE AIR MASS. SEVERE THUNDERSTORMS ALREADY OCCURRING AND PRODUCING GOLF-BALL SIZED HAIL AND DAMAGING WINDS OVER 60 MPH EAST OF THE HILL COUNTRY WILL CONTINUE MOVING EASTWARD AND BECOME MORE NUMEROUS. THE MAJOR THREAT IS FOR HAIL ONE INCH IN DIAMETER AND DAMAGING WIND GUSTS TO 80S MPH...HOWEVER ISOLATED TORNADOES ARE POSSIBLE AS WELL. PERSONS IN THESE COUNTIES SHOULD STAY ALERT AND CLOSELY MONITOR THIS POTENTIALLY DANGEROUS DEVELOPING WEATHER SITUATION AND BE PREPARED TO MOVE TO A PLACE OF SAFETY SHOULD WARNINGS BE ISSUED. STAY TUNED TO NOAA WEATHER RADIO OR OTHER WEATHER NEWS SOURCES FOR UPDATES OR POSSIBLE WARNINGS.
Special weather statement, Feb 25, 11:45 PM CST, 2 hours 55 minutes before
TXZ163-164-177>179-198>200-210>214-226-227-235>238-261130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1145 PM CST WED FEB 25 1998 ...A SEVERE THUNDERSTORMS WATCH ISSUED FOR MUCH OF SOUTHEAST TEXAS... THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH EFFECTIVE UNTIL 6 AM THU FEB 26 1998 FOR PEOPLE IN THE FOLLOWING COUNTIES... ...GRIMES...WASHINGTON...AUSTIN...COLORADO...WALLER...WHARTON ...JACKSON...MATAGORDA...BRAZORIA...FORT BEND...MADISON...HOUSTON... WALKER... MONTGOMERY...HARRIS...GALVESTON...CHAMBERS...LIBERTY... SAN JACINTO...POLK...TRINITY A DEEPENING LOW PRESSURE SYSTEM OVER THE SOUTHERN RIO GRANDE AND A DRY LINE OVER SOUTH CENTRAL TEXAS ARE MOVING EASTWARD INTO AN INCREASINGLY UNSTABLE AIR MASS. SEVERE THUNDERSTORMS ALREADY OCCURRING AND PRODUCING GOLF-BALL SIZED HAIL AND DAMAGING WINDS OVER 60 MPH EAST OF THE HILL COUNTRY WILL CONTINUE MOVING EASTWARD AND BECOME MORE NUMEROUS. THE MAJOR THREAT IS FOR HAIL ONE INCH IN DIAMETER AND DAMAGING WIND GUSTS TO 80S MPH...HOWEVER ISOLATED TORNADOES ARE POSSIBLE AS WELL. PERSONS IN THESE COUNTIES SHOULD STAY ALERT AND CLOSELY MONITOR THIS POTENTIALLY DANGEROUS DEVELOPING WEATHER SITUATION AND BE PREPARED TO MOVE TO A PLACE OF SAFETY SHOULD WARNINGS BE ISSUED. STAY TUNED TO NOAA WEATHER RADIO OR OTHER WEATHER NEWS SOURCES FOR UPDATES OR POSSIBLE WARNINGS.
Special weather statement, Feb 26, 12:05 AM CST, 2 hours 35 minutes before
TXZ163-164-177>179-198>200-210>214-226-227-235>238-261130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1205 AM CST THU FEB 26 1998 ...A SEVERE THUNDERSTORM WATCH ISSUED FOR MUCH OF SOUTHEAST TEXAS... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH EFFECTIVE UNTIL 6 AM THU FEB 26 1998 FOR PEOPLE IN THE FOLLOWING COUNTIES... ...GRIMES...WASHINGTON...AUSTIN...COLORADO...WALLER...WHARTON ...JACKSON...MATAGORDA...BRAZORIA...FORT BEND...MADISON...HOUSTON... WALKER... MONTGOMERY...HARRIS...GALVESTON...CHAMBERS...LIBERTY... SAN JACINTO...POLK...TRINITY A DEEPENING LOW PRESSURE SYSTEM OVER THE SOUTHERN RIO GRANDE AND A DRY LINE OVER SOUTH CENTRAL TEXAS ARE MOVING EASTWARD INTO AN INCREASINGLY UNSTABLE AIR MASS. SEVERE THUNDERSTORMS ALREADY OCCURRING AND PRODUCING GOLF-BALL SIZED HAIL AND DAMAGING WINDS OVER 60 MPH EAST OF THE HILL COUNTRY WILL CONTINUE MOVING EASTWARD AND BECOME MORE NUMEROUS. THE MAJOR THREAT IS FOR HAIL ONE INCH IN DIAMETER AND DAMAGING WIND GUSTS TO 80S MPH...HOWEVER ISOLATED TORNADOES ARE POSSIBLE AS WELL. PERSONS IN THESE COUNTIES SHOULD STAY ALERT AND CLOSELY MONITOR THIS POTENTIALLY DANGEROUS DEVELOPING WEATHER SITUATION AND BE PREPARED TO MOVE TO A PLACE OF SAFETY SHOULD WARNINGS BE ISSUED. STAY TUNED TO NOAA WEATHER RADIO OR OTHER WEATHER NEWS SOURCES FOR UPDATES OR POSSIBLE WARNINGS.
Special weather statement, Feb 26, 12:05 AM CST, 2 hours 35 minutes before
TXZ163-164-177>179-198>200-210>214-226-227-235>238-261130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1205 AM CST THU FEB 26 1998 ...A SEVERE THUNDERSTORM WATCH ISSUED FOR MUCH OF SOUTHEAST TEXAS... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH EFFECTIVE UNTIL 6 AM THU FEB 26 1998 FOR PEOPLE IN THE FOLLOWING COUNTIES... ...GRIMES...WASHINGTON...AUSTIN...COLORADO...WALLER...WHARTON ...JACKSON...MATAGORDA...BRAZORIA...FORT BEND...MADISON...HOUSTON... WALKER... MONTGOMERY...HARRIS...GALVESTON...CHAMBERS...LIBERTY... SAN JACINTO...POLK...TRINITY A DEEPENING LOW PRESSURE SYSTEM OVER THE SOUTHERN RIO GRANDE AND A DRY LINE OVER SOUTH CENTRAL TEXAS ARE MOVING EASTWARD INTO AN INCREASINGLY UNSTABLE AIR MASS. SEVERE THUNDERSTORMS ALREADY OCCURRING AND PRODUCING GOLF-BALL SIZED HAIL AND DAMAGING WINDS OVER 60 MPH EAST OF THE HILL COUNTRY WILL CONTINUE MOVING EASTWARD AND BECOME MORE NUMEROUS. THE MAJOR THREAT IS FOR HAIL ONE INCH IN DIAMETER AND DAMAGING WIND GUSTS TO 80S MPH...HOWEVER ISOLATED TORNADOES ARE POSSIBLE AS WELL. PERSONS IN THESE COUNTIES SHOULD STAY ALERT AND CLOSELY MONITOR THIS POTENTIALLY DANGEROUS DEVELOPING WEATHER SITUATION AND BE PREPARED TO MOVE TO A PLACE OF SAFETY SHOULD WARNINGS BE ISSUED. STAY TUNED TO NOAA WEATHER RADIO OR OTHER WEATHER NEWS SOURCES FOR UPDATES OR POSSIBLE WARNINGS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 10:29 PM CST | Severe Thunderstorm Warning | HGX | Burleson | 61 min |
| Feb 25, 10:49 PM CST | Severe Thunderstorm Warning | HGX | Brazos | 61 min |
| Feb 25, 11:25 PM CST | Severe Thunderstorm Warning | HGX | Washington | 60 min |
| Feb 25, 11:38 PM CST | Severe Thunderstorm Warning | HGX | Grimes, Madison | 62 min |
| Feb 25, 11:43 PM CST | Severe Thunderstorm Warning | HGX | Houston | 62 min |
| Feb 26, 12:01 AM CST | Severe Thunderstorm Warning | HGX | Montgomery, Walker | 59 min |
| Feb 26, 12:25 AM CST | Severe Thunderstorm Warning | HGX | Waller | 65 min |
| Feb 26, 12:37 AM CST | Severe Thunderstorm Warning | HGX | San Jacinto, Trinity | 68 min |
| Feb 26, 1:25 AM CST | Severe Thunderstorm Warning | HGX | Colorado | 60 min |
| Feb 26, 1:26 AM CST | Severe Thunderstorm Warning | HGX | Polk | 64 min |
| Feb 26, 3:11 AM CST | Flash Flood Warning | HGX | Austin | 3 hr |
| Feb 26, 4:36 AM CST | Severe Thunderstorm Warning | HGX | Colorado, Wharton | 59 min |
| Feb 26, 4:39 AM CST | Severe Thunderstorm Warning | HGX | Jackson | 36 min |
| Feb 26, 4:43 AM CST | Flash Flood Warning | HGX | Montgomery | 112 min |
| Feb 26, 5:23 AM CST | Severe Thunderstorm Warning | HGX | Matagorda | 32 min |
| Feb 26, 5:46 AM CST | Severe Thunderstorm Warning | HGX | Brazoria | 29 min |
| Feb 26, 6:09 AM CST | Severe Thunderstorm Warning | HGX | Galveston | 46 min |
| Feb 26, 6:12 AM CST | Severe Thunderstorm Warning | HGX | Harris | 48 min |
| Feb 26, 6:21 AM CST | Severe Thunderstorm Warning | HGX | Chambers | 44 min |
Nearby
Flash Flood Warnings in Texas, 1998Every flash flood warning in 1998
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.