Alert archive / Texas / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 829
The Storm Prediction Center issued this severe thunderstorm watch at Nov 26, 2001, 8:00 PM CST for Beauregard Parish, Vernon Parish, Louisiana; 23 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 26, 2001, 8:00 PM CST (02:00 UTC)
- Expired
- Nov 27, 2001, 1:00 AM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 25 counties
Beauregard Parish, LA, Vernon Parish, LA, Angelina County, TX, Chambers County, TX, Cherokee County, TX, Grimes County, TX, Hardin County, TX, Houston County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Madison County, TX, Montgomery County, TX, Nacogdoches County, TX, Newton County, TX, Orange County, TX, Polk County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Trinity County, TX, Tyler County, TX, Walker County, TX
The radar
The Houston radar (KHGX), 143 km from the middle of the area, began a volume at 02:02 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.
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 26, 10:50 PM CST | Tornado Warning | HGX | Montgomery | 55 min |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.0 hours before the alert went out and 177 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
- 2361 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 572 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 8.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 26, 6:00 PM CST | Tornado Watch | SPC | Bienville, Caldwell, Catahoula, Claiborne, Concordia, De Soto and 18 more | 5 hr |
| Nov 26, 11:00 PM CST | Tornado Watch | SPC | Bienville, Caldwell, Catahoula, East Carroll, Franklin, Grant and 14 more | 5 hr |
| Nov 27, 12:00 AM CST | Tornado Watch | SPC | Allen, Beauregard, Calcasieu, Rapides, Vernon | 5 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2001Severe Thunderstorm Watches in Louisiana, 2001Every severe thunderstorm watch 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.