Alert archive / Texas / Flash Flood Warnings in 2005
Flash Flood Warning 1, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Feb 24, 2005, 7:12 AM CST for Fort Bend 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 outline as issued.
The facts
- Issued
- Feb 24, 2005, 7:12 AM CST (13:12 UTC)
- Expired
- Feb 24, 2005, 9:15 AM CST
- In force
- 2 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
County Fort Bend County, TX
The radar
The Houston radar (KHGX), 75 km from the middle of the area, began a volume at 13:12 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 1.2 hours before the alert went out and 258 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
- 35 J/kg
- Mixed-layer CIN
- -322 J/kg
- Mixed-layer LCL
- 425 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KHGX 241313 FFWHGX TXC157-241515- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 712 AM CST THU FEB 24 2005 THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A * FLASH FLOOD WARNING FOR... FORT BEND COUNTY IN SOUTHEAST TEXAS * UNTIL 915 AM CST * AT 706 AM CST...THE PUBLIC REPORTED SIGNIFICANT FLOODING FROM A THUNDERSTORM NEAR PECAN GROVE. RADAR ESTIMATES INDICATE 3 TO 4 INCHES OF RAIN HAS FALLEN NEAR PECAN GROVE BETWEEN 530 AND 700 AM. ANOTHER INCH OR SO IS POSSIBLE BY 8 AM. * FLOODING IS EXPECTED IN OR NEAR... FULSHEAR...MISSION BEND AND TOWN WEST. EXCESSIVE RUNOFF FROM HEAVY RAINFALL MAY CAUSE FLOODING OF LAND ADJACENT TO CREEKS AND BAYOUS...DRAINAGE AREAS AND LOW LYING SPOTS. ADDITIONALLY...FLOODING MAY OCCUR ON...STREETS...FRONTAGE ROADS...AND HIGHWAY UNDERPASSES. AVOID LOCATIONS WHERE WATER COVERS THE GROUND PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE... OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. LAT...LON 2967 9594 2955 9579 2965 9561 2977 9582 $$
1 follow-up statement
000 WGUS74 KHGX 241518 FFSHGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 917 AM CST THU FEB 24 2005 TXC157-241527- FORT BEND- 917 AM CST THU FEB 24 2005 ...THE FLASH FLOOD WARNING FOR FORT BEND COUNTY EXPIRED AT 915 AM CST... THE STRONG THUNDERSTORMS WHICH PROMPTED THE FLASH FLOOD WARNING HAVE MOVED OUT OF THE AREA. PLEASE REPORT FLOODING TO THE COUNTY SHERIFF...LOCAL POLICE...OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. LAT...LON 2967 9594 2955 9579 2965 9561 2977 9582 $$
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 24, 3:10 AM CST, 4 hours 2 minutes earlier.
Area forecast discussion, Feb 24, 3:10 AM CST, 4 hours 2 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 310 AM CST THU FEB 24 2005 .DISCUSSION... FIRST ORDER OF BUSINESS WILL BE TO CANCEL THE NPW DENSE FOG ADVISORY. OUTFLOW BOUNDARY FROM EARLIER STORMS ENABLED FOG TO THIN OUT ACROSS THE COASTAL ZONES. SOME PATCHY DENSE FOG IS STILL POSSIBLE OVER OUR SW ZONES THROUGH SUNRISE BUT NOT ENOUGH TO JUSTIFY AN ADVISORY. COLD FRONT WAS LOCATED ACROSS OUR NRN ZONES FROM SAN MARCOS TO JUST NORTH OF COLLEGE STATION TO NEAR JASPER. THE FRONT WILL CONTINUE MOVING SLOWLY SOUTHWARD...PUSHING OFF THE COAST BY LATE MORNING. TEMPS ARE AT THEIR HIGHEST NOW AND WILL SLOWLY FALL THROUGH THE DAY. A LARGE COMPLEX OF SHRA/TSRA WAS LOCATED OVER CENTRAL TEXAS...WITH THE STRONGEST STORMS BETWEEN SAN ANTONIO AND CORPUS CHRISTI. WILL NEED TO WATCH THESE CLOSELY AS THEY COULD IMPACT OUR SW ZONES FROM 11Z-15Z WITH POSSIBLE SEVERE WEATHER. COMBINATION OF LOW LEVEL JET...PWS OF 1.2-1.4 INCHES...AND INCREASING DIFFLUENCE ALOFT (AIDED BY PROXIMITY TO RRQ OF UPPER JET) WILL FAVOR DEVELOPMENT OF NUMEROUS SHRA/TSRA ACROSS SE TX THIS MORNING. THE MAIN THREAT WILL BE HEAVY RAINFALL. HPC HAS PLACED THE SOUTHERN HALF OF SE TX IN A SLIGHT RISK FOR EXCESSIVE RAINFALL. HAVE DECIDED TO MENTION LOCALLY HEAVY RAIN IN ALL ZONES TODAY. HOWEVER...WILL MENTION IN HWOHGX THAT HEAVIEST AMOUNTS ARE EXPECTED OVER OUR SOUTHERN HALF. WILL CALL FOR WIDESPREAD RAINFALL AMOUNTS OF 1/2 TO 1 INCH...WITH ISOLATED TOTALS OF 2 TO 4 INCHES THROUGH THIS EVENING. GIVEN THAT YESTERDAYS RAINFALL WAS VERY SPOTTY...WILL HOLD OFF ON ISSUANCE OF AN FFA. HOWEVER...SOME LOCALIZED FLOODING PROBLEMS ARE POSSIBLE. MUCH OF THE CONVECTION WILL BECOME ELEVATED IN NATURE WHICH WILL LIMIT THE SEVERE WEATHER THREAT AFTER MID-MORNING. HOWEVER...THE STRONGEST STORMS COULD PRODUCE SMALL HAIL. PRECIP WILL DECREASE FROM NORTH TO SOUTH BY MIDNIGHT. MAINTAINED LOW POPS FOR FRIDAY WITH SE TX STILL IN THE SOUTHWEST FLOW ALOFT. GFS/ECMWF ARE TRENDING FASTER WITH THE REMNANTS OF THE UPPER LOW CROSSING TEXAS OVER THE WEEKEND. BEST ISENTROPIC LIFT IS NOW FORECAST TO TAKE PLACE FROM SAT AFTN THROUGH SUNDAY MORNING. WILL KEEP POPS ON THE LOW SIDE WITH PWS FORECAST TO REMAIN UNDER AN INCH. ANOTHER FROPA IS EXPECTED MONDAY WHICH WILL DRY THINGS OUT FOR A DAY OR TWO. MODELS DISAGREE FROM WEDNESDAY ONWARD SO WENT WITH THE STATUS QUO. 35 && .PRELIMINARY POINT TEMPS/POPS... COLLEGE STATION (CLL) 57 45 59 42 60 / 80 30 20 10 20 HOUSTON (IAH) 59 47 60 44 60 / 100 50 20 10 20 GALVESTON (GLS) 63 51 59 50 60 / 100 60 20 10 20 && .HGX WATCHES/WARNINGS/ADVISORIES... .TX...NONE. .GM...NONE. &&
Hazardous weather outlook, Feb 24, 6:15 AM CST, 57 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 615 AM CST THU FEB 24 2005 GMZ330-335-TXZ163-164-176>179-195>200-210>214-226-227-235>238-251300- AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND-GALVESTON- GALVESTON BAY-GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY-MADISON-MATAGORDA- MATAGORDA BAY-MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER- WASHINGTON-WHARTON- 615 AM CST THU FEB 24 2005 ...LOCALLY HEAVY RAINFALL POSSIBLE ACROSS ALL OF SOUTHEAST TEXAS TODAY... ...A FEW SEVERE THUNDERSTORMS POSSIBLE THIS MORNING OVER THE SOUTHERN THIRD OF THE AREA... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT. NUMEROUS SHOWERS AND THUNDERSTORMS WILL OCCUR ACROSS SOUTHEAST TEXAS TODAY AS A COLD FRONT INTERACTS WITH A MOIST AND UNSTABLE AIRMASS IN PLACE. THE MAIN HAZARDOUS WEATHER THREAT TODAY WILL BE MINOR FLOODING DUE TO LOCALLY HEAVY RAINFALL. RAINFALL AMOUNTS THROUGH THIS EVENING WILL AVERAGE 1 TO 2 INCHES. ISOLATED RAINFALL TOTALS OF 3 TO 5 INCHES ARE POSSIBLE MAINLY OVER THE SOUTHERN HALF OF SOUTHEAST TEXAS. THE HEAVY RAINFALL COULD CAUSE LOCALIZED FLOODING OF STREETS...FEEDER ROADS... UNDERPASSES...AND OTHER LOW LYING SPOTS. IN ADDITION...A FEW SEVERE THUNDERSTORMS ARE POSSIBLE THIS MORNING ALONG AND SOUTH OF A LINE FROM EDNA TO HOUSTON TO WINNIE. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY SEVERE WEATHER THREATS. THE SEVERE WEATHER THREAT IS EXPECTED TO END BY MIDDAY. THE RAIN WILL TAPER OFF FROM NORTH TO SOUTH THIS EVENING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT.... SPOTTER ACTIVATION IS POSSIBLE TODAY.
In the hours before
Special weather statement, Feb 24, 5:00 AM CST, 2 hours 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 500 AM CST THU FEB 24 2005 GMZ330-350-TXZ210-226-235>237-241600- BRAZORIA-COLORADO-JACKSON-MATAGORDA-MATAGORDA BAY- WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT 20 NM-WHARTON- 500 AM CST THU FEB 24 2005 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 AM CST... THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH THAT COVERS THE SOUTHWEST PORTIONS OF SOUTHEAST TEXAS AND THE MIDDLE TEXAS COAST. THE COUNTIES INCLUDED IN THE WATCH ARE BRAZORIA...COLORADO... JACKSON...MATAGORDA...AND WHARTON. THE WATCH ALSO INCLUDES MATAGORDA BAY AND THE COASTAL WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT 20 NAUTICAL MILES. A CLUSTER OF STRONG TO SEVERE THUNDERSTORMS WAS LOCATED JUST WEST OF VICTORIA AT 500 AM. THIS CLUSTER OF THUNDERSTORMS WILL MOVE EASTWARD ACROSS THE WATCH AREA THROUGH MID MORNING. CONDITIONS APPEAR FAVORABLE FOR SOME OF THE STORMS TO BECOME SEVERE...PRODUCING LARGE HAIL AND DAMAGING WINDS. PERSONS IN OR NEAR THE WATCH AREA SHOULD BE PREPARED FOR THE POSSIBILITY OF SEVERE WEATHER THIS MORNING. BE PREPARED TO TAKE QUICK ACTION IF A WARNING IS ISSUED. STAY TUNED TO NOAA WEATHER RADIO OR OTHER NEWS SOURCES FOR FURTHER WEATHER UPDATES AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 23, 8:05 PM CST | Severe Thunderstorm Warning | HGX | Waller | 40 min |
| Feb 23, 8:22 PM CST | Severe Thunderstorm Warning | HGX | Harris | 53 min |
| Feb 23, 8:38 PM CST | Severe Thunderstorm Warning | HGX | Harris | 52 min |
| Feb 23, 8:48 PM CST | Severe Thunderstorm Warning | HGX | Waller | 42 min |
| Feb 23, 9:01 PM CST | Severe Thunderstorm Warning | HGX | Harris | 46 min |
| Feb 23, 9:26 PM CST | Special Marine Warning | HGX | 2 hr | |
| Feb 24, 5:07 AM CST | Severe Thunderstorm Warning | HGX | Jackson | 38 min |
| Feb 24, 5:51 AM CST | Special Marine Warning | HGX | 114 min | |
| Feb 24, 6:40 AM CST | Tornado Warning | HGX | Chambers, Fort Bend, Harris | 275 days |
| Feb 24, 7:14 AM CST | Special Marine Warning | HGX | 2 hr | |
| Feb 24, 7:45 AM CST | Special Marine Warning | HGX | 2 hr | |
| Feb 24, 8:33 AM CST | Special Marine Warning | HGX | 87 min | |
| Feb 24, 10:06 AM CST | Special Marine Warning | HGX | 39 min |
Nearby
Flash Flood Warnings in Texas, 2005Every flash flood warning in 2005
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.