Alert archive / Texas / Tornado Watches in 2001
Tornado Watch 850
The Storm Prediction Center issued this tornado watch at Dec 16, 2001, 6:00 PM CST for 11 parishes in Louisiana; 33 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 16, 2001, 6:00 PM CST (00:00 UTC)
- Expired
- Dec 16, 2001, 11:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 44 counties
Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Red River Parish, LA, Sabine Parish, LA, Union Parish, LA, Webster Parish, LA, Angelina County, TX, Austin County, TX, Chambers County, TX, Cherokee County, TX, Gregg County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Harrison County, TX, Houston County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Madison County, TX, Marion County, TX, Montgomery County, TX, Nacogdoches County, TX, Newton County, TX, Orange County, TX, Panola County, TX, Polk County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Walker County, TX, Waller County, TX, Washington County, TX
The radar
The Houston radar (KHGX), 172 km from the middle of the area, began a volume at 00:04 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
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 16, 6:01 PM CST | Flash Flood Warning | SHV | Gregg | 4 hr |
| Dec 16, 7:05 PM CST | Tornado Warning | HGX | Harris, Montgomery | 55 min |
| Dec 16, 7:45 PM CST | Tornado Warning | HGX | Liberty | 45 min |
| Dec 16, 8:21 PM CST | Severe Thunderstorm Warning | SHV | Caddo | 24 min |
| Dec 16, 8:55 PM CST | Flash Flood Warning | SHV | Panola | 2 hr |
| Dec 16, 8:58 PM CST | Flash Flood Warning | SHV | Bossier, Caddo | 4 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.0 hours before the alert went out and 194 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
- 1068 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 531 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 6.2
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 |
|---|---|---|---|---|
| Dec 16, 10:00 PM CST | Tornado Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Bienville, Bossier and 30 more | 5 hr |
Nearby
Tornado Watches in Texas, 2001Tornado Watches in Louisiana, 2001Every tornado 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.