Alert archive / Texas / Severe Thunderstorm Watches in 2012
Severe Thunderstorm Watch 691
The Storm Prediction Center issued this severe thunderstorm watch at Dec 25, 2012, 1:37 AM CST for 15 parishes in Louisiana; 42 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 25, 2012, 1:37 AM CST (07:37 UTC)
- Expired
- Dec 25, 2012, 9:00 AM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 57 counties
Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, De Soto Parish, LA, Evangeline Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Natchitoches Parish, LA, Rapides Parish, LA, Red River Parish, LA, Sabine Parish, LA, Saint Landry Parish, LA, Vernon Parish, LA, Anderson County, TX, Angelina County, TX, Bell County, TX, Bosque County, TX, Brazos County, TX, Burleson County, TX, Cherokee County, TX, Coryell County, TX, Falls County, TX, Freestone County, TX, Grimes County, TX, Hardin County, TX, Henderson County, TX, Hill County, TX, Houston County, TX, Jasper County, TX, Lee County, TX, Leon County, TX, Liberty County, TX, Limestone County, TX, Madison County, TX, McLennan County, TX, Milam County, TX, Montgomery County, TX, Nacogdoches County, TX, Navarro County, TX, Newton County, TX, Orange County, TX, Panola County, TX, Polk County, TX, Robertson 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, Walker County, TX, Washington County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 161 km from the middle of the area, began a volume at 07:40 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 25, 2:17 AM CST | Severe Thunderstorm Warning | LCH | Acadia, Jefferson Davis | 58 min |
| Dec 25, 2:39 AM CST | Tornado Warning | LCH | Acadia, Jefferson Davis | 36 min |
| Dec 25, 3:21 AM CST | Severe Thunderstorm Warning | SHV | Cherokee, Nacogdoches, Panola, Rusk, Smith | 42 min |
| Dec 25, 3:24 AM CST | Severe Thunderstorm Warning | LCH | Allen, Beauregard, Vernon | 19 min |
| Dec 25, 4:11 AM CST | Severe Thunderstorm Warning | LCH | Avoyelles, Saint Landry | 39 min |
| Dec 25, 7:20 AM CST | Tornado Warning | LCH | Acadia, Vermilion | 25 min |
| Dec 25, 7:45 AM CST | Severe Thunderstorm Warning | FWD | Leon | 45 min |
| Dec 25, 8:24 AM CST | Severe Thunderstorm Warning | FWD | Anderson | 51 min |
| Dec 25, 8:32 AM CST | Severe Thunderstorm Warning | HGX | Houston | 43 min |
| Dec 25, 8:42 AM CST | Tornado Warning | HGX | Houston | 48 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 25, 1:01 AM CST | Mesoscale Discussion | SPC | Allen, Beauregard, Sabine, Vernon | 59 min |
| Dec 25, 5:56 AM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, De Soto and 10 more | 94 min |
| Dec 25, 7:00 AM CST | Mesoscale Discussion | SPC | Acadia, Allen, Ascension, Assumption, Beauregard, Calcasieu and 24 more | 60 min |
| Dec 25, 7:28 AM CST | Tornado Watch | SPC | Acadia, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia and 19 more | 6 hr |
| Dec 25, 8:46 AM CST | Mesoscale Discussion | SPC | Allen, Avoyelles, Beauregard, Bienville, Calcasieu, Caldwell and 21 more | 59 min |
| Dec 25, 9:02 AM CST | Severe Thunderstorm Watch | SPC | Bienville, Bossier, Caddo, Caldwell, Catahoula, Claiborne and 20 more | 7 hr |
| Dec 25, 9:17 AM CST | Tornado Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 10 more | 8 hr |
| Dec 25, 12:19 PM CST | Mesoscale Discussion | SPC | Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 35 more | 71 min |
| Dec 25, 12:23 PM CST | Mesoscale Discussion | SPC | Bienville, Caldwell, Catahoula, Concordia, East Carroll, Franklin and 13 more | 67 min |
| Dec 25, 12:58 PM CST | Tornado Watch | SPC | Ascension, Assumption, Catahoula, Concordia, East Baton Rouge, East Feliciana and 20 more | 9 hr |
| Dec 25, 3:22 PM CST | Mesoscale Discussion | SPC | Caldwell, East Carroll, Morehouse, Richland, West Carroll | 53 min |
| Dec 25, 3:44 PM CST | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 19 more | 91 min |
| Dec 25, 9:31 AM CST | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Cooke, Denton, Hood and 10 more | 5 hr |
| Dec 25, 11:02 AM CST | Mesoscale Discussion | SPC | Wichita, Wilbarger | 4 hr |
| Dec 25, 1:00 PM CST | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Collin, Dallas, Delta and 16 more | 5 hr |
| Dec 25, 2:50 PM CST | Mesoscale Discussion | SPC | Clay, Wichita, Wilbarger | 4 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2012Severe Thunderstorm Watches in Louisiana, 2012Every severe thunderstorm watch in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.