Alert archive / Texas / Tornado Warnings in 2001
Tornado Warning 22, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Oct 5, 2001, 2:40 PM CDT for Brazoria County, Fort Bend County, Texas. It was in force for 50 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
- Oct 5, 2001, 2:40 PM CDT (19:40 UTC)
- Expired
- Oct 5, 2001, 3:30 PM CDT
- In force
- 50 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Brazoria County, TX, Fort Bend County, TX
The radar
The Houston radar (KHGX), 52 km from the middle of the area, began a volume at 19:44 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, 7.7 hours before the alert went out and 247 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
- 1400 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 612 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 142 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
The text
As transmitted, in the capitals the NWS used until 2016.
193 WFUS54 KHGX 051942 TORHOU TXC039-157-052030- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 240 PM CDT FRI OCT 5 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN FORT BEND COUNTY IN SOUTHEAST TEXAS NORTHERN BRAZORIA COUNTY IN SOUTHEAST TEXAS * UNTIL 330 PM CDT * AT 234 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 18 MILES SOUTHWEST OF IOWA COLONY AND ABOUT 10 MILES EAST OF DAMON...MOVING NORTHEAST AT 20 MPH. * LOCATIONS IN THE PATH OF THE TORNADO INCLUDE... ARCOLA...IOWA COLONY...JULIFF FRESNO MOVE TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON YOUR CAR OR MOBILE HOME FOR A STRONG SHELTER NOW 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 2931 9579 2918 9564 2943 9533 2956 9546
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Oct 5, 2:30 PM CDT, 10 minutes earlier.
Area forecast discussion, Oct 5, 2:30 PM CDT, 10 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION...CORRECTION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 230 PM CDT FRI OCT 5 2001 SURFACE ANALYSIS SHOWS COLD FRONT EXTENDING FROM SOUTH OF DALLAS TO JUST SOUTH OF SAN ANGELO AT 19Z. PREFRONTAL TROF LOCATED AHEAD OF FRONT WITH CONVECTION DEVELOPING ALONG TROF FROM TYLER TO WACO. FRONT TO CROSS CWA THIS EVENING A LITTLE AHEAD OF 12Z MESOETA FORECAST. EXPECT MAIN COLD FRONT TO MOVE INTO NRN ZONES BY 00Z AND OFF COAST AROUND 06Z. MAIN QUESTION IS COVERAGE OF TSRA AND THREAT OF SEVERE AHEAD OF FRONT TONIGHT. BOTH 12Z MESOETA/AVN SHOW BEST LIFT/DYNAMICS ASSOCIATED WITH ONGOING CONVECTION TO SHIFT EAST OF CWA BY 00Z...AS 700 MB TROF MOVES TOWARD LOUISIANA. MAIN FORCING FOR TSRA BY TONIGHT WILL BE LIMITED TO CONVERGENCE ALONG PREFRONTAL TROF AND FRONT. CLOUD COVER/PRECIP HAS LIMITED DESTABILIZATION ACROSS CWA THIS AFTN. 18Z LAPS ANALYSIS SHOWED CAPES AROUND 2500 AND LIS AROUND -8 OVER NRN/WRN ZONES BUT THIS IS LIKELY OVERDONE. WILL MAINTAIN MENTION OF SEVERE IN ZONES...BUT EXPECT ONLY ISOLATED THREAT. SURFACE HIGH BUILDS IN BEHIND THE FRONT FOR THE WEEKEND. 850 MB MOISTURE NEVER GETS TOTALLY SCOURED OUT SO EXPECT MOSTLY CLOUDY SKIES SATURDAY WITH SOME CLEARING NORTH LATE IN THE DAY. WILL LEAN TOWARD COOLEST GUIDANCE SATURDAY GIVEN CURRENT TEMPS IN 40S/50S BEHIND FRONT. CLEARING SKIES WILL ALLOW TEMPS TO DROP INTO THE 40S NE ZONES SATURDAY NIGHT BUT LINGERING CLOUDS WILL KEEP SOUTHERN ZONES WARMER. 850 MB MOISTURE INCREASES ACROSS CWA FROM SOUTHWEST ON SUNDAY SO EXPECT MORE CLOUD COVER ESPECIALLY WRN/SRN ZONES. FOR EXTENDED...500 MB FLOW ACROSS U.S. SHIFTS TO MORE ZONAL PATTERN NEXT WEEK. UPPER LOW DIGS MOVES INTO SOUTHERN ROCKIES WITH STRONG ONSHORE FLOW ACROSS TX MOST OF THE WEEK. WAA PATTERN AND SHORTWAVES IN FLOW ALOFT WILL KEEP CHANCE OF TSRA IN FCST MOST OF THE WEEK. .HGX...SCEC BAYS AND OFFSHORE WATERS TONIGHT. 35/37/39 PRELIMS... CLL EB 056/067 051/074 055 910 IAH EB 059/068 053/073 056 910 GLS EB 066/072 063/073 066 920
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 5, 10:54 AM CDT | Special Marine Warning | HGX | 96 min | |
| Oct 5, 10:54 AM CDT | Special Marine Warning | HGX | 96 min |
Nearby
Tornado Warnings in Texas, 2001Every tornado warning in 2001Tornadoes in 2001
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.