Alert archive / Texas / Flash Flood Warnings in 2000
Flash Flood Warning 22, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Sep 13, 2000, 4:15 PM CDT for Galveston County, Texas. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Sep 13, 2000, 4:15 PM CDT (21:15 UTC)
- Expired
- Sep 13, 2000, 5:15 PM CDT
- In force
- 60 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Galveston County, TX
The radar
The Houston radar (KHGX), 30 km from the middle of the area, began a volume at 21:16 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.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.3 hours before the alert went out and 179 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
- 710 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 635 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KHGX 132117 FFWHGX TXC167-132215- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 415 PM CDT WED SEP 13 2000 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * FLASH FLOOD WARNING FOR... GALVESTON COUNTY IN SOUTHEAST TEXAS * UNTIL 515 PM CDT * AT 411 PM CDT...DOPPLER RADAR INDICATED VERY HEAVY RAINFALL WAS COMING TO AN END OVER GALVESTON ISLAND. * FLOODING IS POSSIBLE IN SOUTHERN GALVESTON COUNTY... BAYOU VISTA...GALVESTON...HITCHCOCK...LA MARQUE THE FLASH FLOOD WARNING HAS BEEN EXTENDED TIL 515 PM. THE HEAVY RAINFALL ALONG THE COAST SHOULD BE COMING TO AN END. HIGH WATER ON ROADS WILL SLOWLY SUBSIDE. DO NOT CROSS ANY LOCATION WHERE WATER COVERS THE ROAD! SMALL CREEKS...STREAMS...BAYOUS...UNDERPASSES...AND FEEDER ROADS MAY FLOOD. AVOID LOCATIONS WATER COVERS THE GROUND! PLEASE REPORT FLOODING TO THE COUNTY SHERIFF...LOCA L POLICE...OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. LAT...LON 2940 9458 2924 9484 2912 9506 2948 9500
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 Sep 13, 2:20 PM CDT, 1 hour 55 minutes earlier.
Area forecast discussion, Sep 13, 2:20 PM CDT, 1 hour 55 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 220 PM CDT WED SEP 13 2000 GOOD SOAKING RAINS AFFECTING SE PTNS OF THE CWA...INCLUDING METRO HOUSTON. ACTIVITY HAS BEEN A LITTLE SLOW TO GET GOING NRN AND WRN ZONES. PLENTY OF BRKS/THIN SPOTS IN CLDS W...THE ATMOSPHERE IS STILL DESTABILIZING THERE. EXPECT MORE TO FIRE UP AS THE AFTN PROGRESSES. WILL HAVE AT LEAST SCT POPS IN FOR THIS EVENING. WILL TAKE A FINAL RADAR PEEK BEFORE PRESS TIME AND ADJUST AS NECESSARY. EXPECT EFFECTS FROM THE TROP WAVE TO DIMINISH SOMEWHAT OVERNIGHT. MODELS GRADUALLY DRY OUT THE ATMOSPHERE NEXT 48 HRS...THEN REALLY DRY THINGS OUT BEHIND A SFC FNT SCHEDULED TO MOVE S ACRS THE CWA ON FRIDAY. PW VALUES STILL UP ABV 2" SRN PTNS TMRW THO. DECENT UPR LVL DIFFLUENCE. LGT SFC GRADIENT SHD LEAD TO A BIT OF A SEABREEZE FNT. WILL TAPER POPS FROM 40 COAST TO 30 INLAND TMRW. ETA LOOKS TOO DRY ON FRI. NGM AND AVN SHOW MEASUREABLE PRECIP ARND THE FNT...ETA DOES NOT. THERE SHOULD BE ENOUGH LINGERING MOISTURE TO WARRANT AT LEAST 20/30 POPS. TIMING WISE...AVN IS SLOWER. NOT PLANNING ON THE FNT HANGING UP...SFC PRESSURES ARE HIGHER BEHIND THE BOUNDARY AND H5 FLOW IS DECENT OUT OF THE N WITH RDG WELL W OF AREA. WILL FCST DRY WX FOR THE WEEKEND WITH LOWER TEMPS. 46/45/WT/35/34 .KHGX...NONE. .PRELIMS... CLL BB 072/089 068/093 059 432 IAH EB 073/090 069/093 061 432 8GLS EB 077/087 076/087 070 342 END
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 12, 7:12 PM CDT | Flash Flood Warning | HGX | San Jacinto | 3 hr |
| Sep 13, 4:25 AM CDT | Flash Flood Warning | HGX | Brazoria | 3 hr |
| Sep 13, 6:55 AM CDT | Flash Flood Warning | HGX | Brazoria | 2 hr |
| Sep 13, 1:26 PM CDT | Flash Flood Warning | HGX | Galveston, Harris | 3 hr |
| Sep 13, 4:32 PM CDT | Flash Flood Warning | HGX | Brazoria | 3 hr |
Nearby
Flash Flood Warnings in Texas, 2000Every flash flood warning in 2000
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.