Alert archive / Texas / Tornado Watches in 2005
Tornado Watch 811
The Storm Prediction Center issued this tornado watch at Sep 23, 2005, 10:35 PM CDT for 6 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 23, 2005, 10:35 PM CDT (03:35 UTC)
- Expired
- Sep 24, 2005, 5:43 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
Counties Hardin County, TX, Jasper County, TX, Jefferson County, TX, Newton County, TX, Orange County, TX, Tyler County, TX
The radar
The Lake Charles radar (KLCH), 101 km from the middle of the area, began a volume at 03:39 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
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 11:53 PM CDT | Tornado Warning | LCH | Jefferson, Orange | 2 hr |
| Sep 24, 1:52 AM CDT | Tornado Warning | LCH | Jefferson, Orange | 2 hr |
| Sep 24, 1:52 AM CDT | Tornado Warning | LCH | Jefferson, Orange | 2 hr |
| Sep 24, 4:13 AM CDT | Tornado Warning | LCH | Hardin, Jasper, Jefferson, Newton, Orange, Tyler | 62 min |
| Sep 24, 5:10 AM CDT | Tornado Warning | LCH | Hardin, Jasper, Newton, Tyler | 65 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 3.6 hours before the alert went out and 103 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
- 160 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 630 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 392 m²/s²
- 0-3 km storm-relative helicity
- 485 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 24, 5:13 AM CDT | Mesoscale Discussion | SPC | Jasper, Newton, Orange, Sabine, San Augustine, Shelby | 32 min |
| Sep 24, 5:45 AM CDT | Tornado Watch | SPC | Newton, Sabine | 7 hr |
| Sep 24, 10:27 AM CDT | Mesoscale Discussion | SPC | Sabine, San Augustine, Shelby | 2 hr |
| Sep 24, 12:49 PM CDT | Mesoscale Discussion | SPC | Bowie, Cass, Harrison, Marion, Panola, Shelby | 3 hr |
Nearby
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.