Alert archive / Texas / Tornado Warnings in 2001
Tornado Warning 26, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Oct 11, 2001, 10:50 AM CDT for Brazoria County, Texas. It was in force for 40 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 11, 2001, 10:50 AM CDT (15:50 UTC)
- Expired
- Oct 11, 2001, 11:30 AM CDT
- In force
- 40 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Brazoria County, TX
The radar
The Houston radar (KHGX), 53 km from the middle of the area, began a volume at 15:52 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 11, 8:00 AM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 3.8 hours before the alert went out and 240 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
- 1805 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 496 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 5.4
The text
As transmitted, in the capitals the NWS used until 2016.
419 WFUS54 KHGX 111551 TORHOU TXC039-111630- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1050 AM CDT THU OCT 11 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * TORNADO WARNING FOR... BRAZORIA COUNTY IN SOUTHEAST TEXAS * UNTIL 1130 AM CDT * AT 1047 AM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES SOUTHEAST OF JONES CREEK...MOVING NORTHEAST AT 20 MPH. * LOCATIONS IN THE PATH OF THE TORNADO INCLUDE... JONES CREEK LAKE JACKSON CLUTE...RICHWOOD OYSTER CREEK 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 2897 9558 2889 9544 2915 9506 2935 9519
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 11, 9:05 AM CDT, 1 hour 45 minutes earlier.
Area forecast discussion, Oct 11, 9:05 AM CDT, 1 hour 45 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 905 AM CDT THU OCT 11 2001 MINI-SUPERCELLS CONTINUE ACROSS SERN TX. TV COVERAGE EARLIER CLEARLY SHOWED A ROTATING WALL CLOUD AND FUNNEL WITH ONE STORM. RADAR SIGNATURES WILL CONTINUE TO BE INCONCLUSIVE. HOWEVER...STORM MOTIONS TOWARD THE NNE (010-030 DEGREES) AND TWO-GATE VELOCITY COUPLETS SEEM TO BE THE BEST PREDICTORS. UPDATED THE ZONES FORECASTS TO ADD THE TORNADO WATCH. .HGX...NONE. 31/47/38/42/WT PRELIMS... CLL TE 083/066 088/060 078 833 IAH TE 084/068 087/065 080 833 GLS TE 083/075 083/072 081 843
In the hours before
Special weather statement, Oct 11, 7:51 AM CDT, 2 hours 59 minutes before
TXZ163-164-176>179-195>200-210>214-226-227-235>238-111800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 751 AM CDT THU OCT 11 2001 ...TORNADO WATCH IN EFFECT FOR SOUTHEAST TEXAS UNTIL 100 PM... THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR SOUTHEAST TEXAS UNTIL 100 PM THIS AFTERNOON. SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP SOUTH OF A COLD FRONT THAT EXTENDS JUST SOUTH OF A LINE FROM CHILDRESS TO HONDO. THE ATMOSPHERE IS DESTABILIZING SOUTH OF THIS LINE...AND CAUSING THE THUNDERSTORMS TO INCREASE IN INTENSITY. THE FOLLOWING COUNTIES ARE INCLUDED IN THE WATCH... HOUSTON...TRINITY...POLK...MADISON...WALKER...BRAZOS...SAN JACINTO...GRIMES...BURLESON...MONTGOMERY...LIBERTY... WASHINGTON...WALLER...HARRIS...AUSTIN...COLORADO...FORT BEND...WHARTON...JACKSON...CHAMBERS...BRAZORIA...GALVESTON AND MATAGORDA. STAY TUNED TO NOAA WEATHER RADIO OR OTHER WEATHER NEWS SOURCES FOR FURTHER 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 |
|---|---|---|---|---|
| Oct 11, 7:29 AM CDT | Tornado Warning | HGX | Harris | 46 min |
| Oct 11, 8:15 AM CDT | Tornado Warning | HGX | Harris | 60 min |
| Oct 11, 8:36 AM CDT | Tornado Warning | HGX | Montgomery, Walker | 39 min |
| Oct 11, 9:15 AM CDT | Severe Thunderstorm Warning | HGX | Montgomery | 45 min |
| Oct 11, 9:30 AM CDT | Severe Thunderstorm Warning | HGX | Harris | 45 min |
| Oct 11, 10:00 AM CDT | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery | 45 min |
| Oct 11, 10:45 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 45 min |
| Oct 11, 12:11 PM CDT | Special Marine Warning | HGX | 2 hr | |
| Oct 11, 12:11 PM CDT | Special Marine Warning | HGX | 2 hr | |
| Oct 11, 6:11 PM CDT | Special Marine Warning | HGX | 2 hr | |
| Oct 11, 6:11 PM CDT | Special Marine Warning | HGX | 2 hr |
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.