Alert archive / Texas / Tornado Watches in 2009
Tornado Watch 12
The Storm Prediction Center issued this tornado watch at Feb 10, 2009, 9:30 PM CST for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 10, 2009, 9:30 PM CST (03:30 UTC)
- Expired
- Feb 11, 2009, 4:23 AM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 80 kt
All 117 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Clark County, AR, Cleburne County, AR, Columbia County, AR, Conway County, AR, Crawford County, AR, Dallas County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Johnson County, AR, Lafayette County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Madison County, AR, Marion County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Yell County, AR, Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA, Webster Parish, LA, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK, Anderson County, TX, Angelina County, TX, Bowie County, TX, Brazos County, TX, Burleson County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Collin County, TX, Dallas County, TX, Delta County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Gregg County, TX, Grimes County, TX, Harrison County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, Marion County, TX, McLennan County, TX, Milam County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Polk County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rockwall County, TX, Rusk County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Tarrant County, TX, Titus County, TX, Trinity County, TX, Upshur County, TX, Van Zandt County, TX, Walker County, TX, Wood County, TX
The radar
The Western Arkansas radar (KSRX), 128 km from the middle of the area, began a volume at 03:30 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
- 80%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 95%
- One or more gusts of 65 knots or more
- 90%
- Ten or more severe hail reports
- 70%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
40 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 10, 9:30 PM CST | Tornado Warning | FWD | Collin, Denton | 16 min |
| Feb 10, 9:33 PM CST | Severe Thunderstorm Warning | FWD | Ellis, Hill, Navarro | 57 min |
| Feb 10, 9:39 PM CST | Severe Thunderstorm Warning | FWD | Falls | 66 min |
| Feb 10, 9:47 PM CST | Severe Thunderstorm Warning | FWD | Limestone | 58 min |
| Feb 10, 9:51 PM CST | Severe Thunderstorm Warning | FWD | Milam | 54 min |
| Feb 10, 9:55 PM CST | Severe Thunderstorm Warning | FWD | Collin, Dallas, Hunt, Kaufman, Rockwall | 65 min |
| Feb 10, 10:03 PM CST | Tornado Warning | FWD | Collin | 16 min |
| Feb 10, 10:06 PM CST | Tornado Warning | FWD | Freestone, Limestone | 24 min |
| Feb 10, 10:18 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Latimer, LeFlore, Pittsburg, Pushmataha | 57 min |
| Feb 10, 10:18 PM CST | Severe Thunderstorm Warning | FWD | Anderson, Freestone, Henderson, Navarro | 57 min |
| Feb 10, 10:28 PM CST | Tornado Warning | FWD | Anderson, Freestone | 32 min |
| Feb 10, 10:40 PM CST | Severe Thunderstorm Warning | FWD | Delta, Hopkins, Hunt, Kaufman, Rains, Van Zandt | 65 min |
| Feb 10, 10:50 PM CST | Severe Thunderstorm Warning | FWD | Leon, Robertson | 49 min |
| Feb 10, 10:52 PM CST | Severe Thunderstorm Warning | FWD | Anderson, Freestone, Henderson, Leon | 53 min |
| Feb 10, 10:58 PM CST | Severe Thunderstorm Warning | SHV | Cherokee, Smith | 62 min |
| Feb 10, 11:03 PM CST | Severe Thunderstorm Warning | LZK | Boone, Marion, Newton, Searcy | 42 min |
| Feb 10, 11:04 PM CST | Severe Thunderstorm Warning | SHV | Camp, Franklin, Red River, Titus, Upshur, Wood | 41 min |
| Feb 10, 11:07 PM CST | Severe Thunderstorm Warning | HGX | Brazos | 23 min |
| Feb 10, 11:13 PM CST | Severe Thunderstorm Warning | TSA | Sebastian | 62 min |
| Feb 10, 11:33 PM CST | Severe Thunderstorm Warning | LZK | Logan, Scott | 57 min |
| Feb 10, 11:44 PM CST | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Sebastian | 51 min |
| Feb 10, 11:49 PM CST | Severe Thunderstorm Warning | SHV | Angelina, Cherokee, Gregg, Harrison, Nacogdoches, Panola and 4 more | 56 min |
| Feb 10, 11:50 PM CST | Severe Thunderstorm Warning | LZK | Cleburne, Izard, Stone, Van Buren | 55 min |
| Feb 10, 11:53 PM CST | Severe Thunderstorm Warning | LZK | Baxter, Boone, Johnson, Marion, Newton, Searcy | 67 min |
| Feb 10, 11:57 PM CST | Tornado Warning | LZK | Cleburne, Izard, Stone, Van Buren | 48 min |
| Feb 11, 12:08 AM CST | Severe Thunderstorm Warning | HGX | Houston, Trinity | 37 min |
| Feb 11, 12:23 AM CST | Tornado Warning | LZK | Independence, Izard, Sharp | 37 min |
| Feb 11, 12:40 AM CST | Severe Thunderstorm Warning | SHV | Miller | 65 min |
| Feb 11, 12:42 AM CST | Severe Thunderstorm Warning | SHV | Angelina, Nacogdoches, San Augustine | 48 min |
| Feb 11, 12:46 AM CST | Tornado Warning | LZK | Johnson, Newton, Pope | 44 min |
| Feb 11, 12:46 AM CST | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery, San Jacinto | 44 min |
| Feb 11, 12:51 AM CST | Severe Thunderstorm Warning | HGX | Polk, San Jacinto | 39 min |
| Feb 11, 1:00 AM CST | Severe Thunderstorm Warning | LZK | Pope | 45 min |
| Feb 11, 1:02 AM CST | Severe Thunderstorm Warning | LZK | Fulton, Independence, Izard, Sharp, Stone | 45 min |
| Feb 11, 1:24 AM CST | Severe Thunderstorm Warning | LZK | Conway, Faulkner, Pope, Searcy, Van Buren | 36 min |
| Feb 11, 1:26 AM CST | Severe Thunderstorm Warning | SHV | Angelina, Sabine, San Augustine, Shelby | 49 min |
| Feb 11, 1:34 AM CST | Severe Thunderstorm Warning | SHV | Columbia, Union | 41 min |
| Feb 11, 1:54 AM CST | Severe Thunderstorm Warning | LZK | Cleburne, Conway, Faulkner, Izard, Stone, Van Buren and 1 more | 46 min |
| Feb 11, 2:23 AM CST | Severe Thunderstorm Warning | LZK | Faulkner, Lonoke, Pulaski, White | 33 min |
| Feb 11, 2:31 AM CST | Severe Thunderstorm Warning | LZK | Cleburne, Independence, Jackson, Sharp, White, Woodruff | 44 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
Shreveport, LA (KSHV), launched 00:00Z, 3.5 hours before the alert went out and 201 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
- 367 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 785 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 410 m²/s²
- 0-3 km storm-relative helicity
- 547 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 10.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 10, 6:13 PM CST | Mesoscale Discussion | SPC | Crawford, Washington | 92 min |
| Feb 10, 8:34 PM CST | Mesoscale Discussion | SPC | Conway, Crawford, Faulkner, Franklin, Garland, Hempstead and 19 more | 86 min |
| Feb 10, 11:13 PM CST | Mesoscale Discussion | SPC | Baxter, Boone, Cleburne, Conway, Faulkner, Fulton and 18 more | 92 min |
| Feb 10, 11:45 PM CST | Tornado Watch | SPC | Arkansas, Clay, Craighead, Crittenden, Cross, Greene and 12 more | 6 hr |
| Feb 11, 12:37 AM CST | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Chicot, Cleveland, Desha and 3 more | 53 min |
| Feb 11, 1:04 AM CST | Tornado Watch | SPC | Ashley, Bradley, Calhoun, Chicot, Cleveland, Desha and 3 more | 5 hr |
| Feb 11, 2:30 AM CST | Mesoscale Discussion | SPC | Arkansas, Clay, Craighead, Crittenden, Cross, Fulton and 18 more | 90 min |
| Feb 11, 4:01 AM CST | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Chicot, Cleveland, Columbia and 6 more | 89 min |
| Feb 11, 5:26 AM CST | Mesoscale Discussion | SPC | Mississippi | 64 min |
| Feb 10, 7:18 PM CST | Mesoscale Discussion | SPC | Carter, Cleveland, Garvin, Jefferson, Lincoln, McClain and 1 more | 57 min |
| Feb 10, 9:46 PM CST | Mesoscale Discussion | SPC | Austin, Brazoria, Calhoun, Chambers, Colorado, DeWitt and 13 more | 29 min |
| Feb 10, 9:57 PM CST | Severe Thunderstorm Watch | SPC | Aransas, Austin, Bastrop, Bee, Brazoria, Caldwell and 25 more | 5 hr |
Nearby
Tornado Watches in Texas, 2009Tornado Watches in Arkansas, 2009Tornado Watches in Oklahoma, 2009Every tornado watch in 2009
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.