Alert archive / Texas / Tornado Watches in 2010

Tornado Watch 707

October 24, 20104 states

The Storm Prediction Center issued this tornado watch at Oct 24, 2010, 1:51 PM CDT for 4 states. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Oct 24, 2010, 1:51 PM CDT (18:51 UTC)
Expired: Oct 24, 2010, 10:00 PM CDT
In force: 8 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2.5 in
Strongest gust expected: 60 kt

All 100 counties

Arkansas County, AR, Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Jefferson County, AR, Lafayette County, AR, Lincoln County, AR, Little River County, AR, Lonoke County, AR, Miller County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Polk County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Sevier County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, McCurtain County, OK, Anderson County, TX, Angelina County, TX, Bell County, TX, Bowie 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, Harrison County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Leon County, TX, Limestone County, TX, Marion County, TX, McLennan County, TX, Milam County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rockwall County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 90 km from the middle of the area, began a volume at 18:52 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: 40%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 30%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 50%
One or more hailstones of 2 inches or more: 50%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

95 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Oct 24, 1:56 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Upshur, Wood	64 min
Oct 24, 2:23 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Pike, Polk	37 min
Oct 24, 2:23 PM CDT	Severe Thunderstorm Warning	FWD	Hopkins	27 min
Oct 24, 2:24 PM CDT	Severe Thunderstorm Warning	SHV	Howard	36 min
Oct 24, 2:52 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring, Montgomery	38 min
Oct 24, 2:52 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Cass, Franklin, Morris, Red River and 1 more	53 min
Oct 24, 2:57 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Pike	48 min
Oct 24, 3:11 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Desha, Jefferson, Lincoln	34 min
Oct 24, 3:14 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Drew	31 min
Oct 24, 3:16 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	59 min
Oct 24, 3:23 PM CDT	Tornado Warning	SHV	Bowie, Cass, Morris, Titus	37 min
Oct 24, 3:27 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Perry, Saline	48 min
Oct 24, 3:28 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Lafayette, Nevada	47 min
Oct 24, 3:31 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery	29 min
Oct 24, 3:39 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris	66 min
Oct 24, 3:41 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Morehouse, Richland, West Carroll	64 min
Oct 24, 3:48 PM CDT	Severe Thunderstorm Warning	LZK	Desha, Drew	27 min
Oct 24, 3:51 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Clark, Ouachita	24 min
Oct 24, 4:02 PM CDT	Severe Thunderstorm Warning	FWD	Collin	58 min
Oct 24, 4:11 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Pulaski, Saline	49 min
Oct 24, 4:12 PM CDT	Severe Thunderstorm Warning	JAN	Ashley, Chicot	63 min
Oct 24, 4:12 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Ouachita	33 min
Oct 24, 4:13 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Lafayette, Miller, Nevada	62 min
Oct 24, 4:17 PM CDT	Severe Thunderstorm Warning	LZK	Garland	28 min
Oct 24, 4:35 PM CDT	Severe Thunderstorm Warning	SHV	Little River	55 min
Oct 24, 4:35 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Fannin, Hunt	70 min
Oct 24, 4:39 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, West Carroll	51 min
Oct 24, 4:48 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Cleveland, Dallas, Ouachita	42 min
Oct 24, 4:54 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Pulaski, Saline	51 min
Oct 24, 4:55 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Lamar	20 min
Oct 24, 4:58 PM CDT	Severe Thunderstorm Warning	FWD	Falls, McLennan	62 min
Oct 24, 4:59 PM CDT	Tornado Warning	LZK	Lonoke, Pulaski, Saline	31 min
Oct 24, 5:00 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson, Lonoke, Prairie	45 min
Oct 24, 5:04 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Navarro	56 min
Oct 24, 5:14 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson, Lonoke, Prairie	46 min
Oct 24, 5:15 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Hempstead, Nevada	30 min
Oct 24, 5:17 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Ouachita	43 min
Oct 24, 5:19 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Hunt, Lamar	71 min
Oct 24, 5:19 PM CDT	Tornado Warning	SHV	Franklin, Red River, Titus	41 min
Oct 24, 5:25 PM CDT	Severe Thunderstorm Warning	FWD	Hunt	50 min
Oct 24, 5:28 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, Pulaski	47 min
Oct 24, 5:29 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Cleveland, Dallas, Drew, Jefferson and 1 more	31 min
Oct 24, 5:38 PM CDT	Tornado Warning	FWD	Delta, Hopkins	52 min
Oct 24, 5:40 PM CDT	Tornado Warning	FWD	Ellis, Navarro	40 min
Oct 24, 5:45 PM CDT	Tornado Warning	FWD	Falls, Limestone	45 min
Oct 24, 5:53 PM CDT	Tornado Warning	FWD	Hopkins, Hunt, Rains	37 min
Oct 24, 5:54 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Clark, Dallas, Ouachita	36 min
Oct 24, 5:59 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Cleveland, Drew, Jefferson, Lincoln	31 min
Oct 24, 5:59 PM CDT	Tornado Warning	SHV	Bowie, Red River, Titus	46 min
Oct 24, 6:00 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson, Lonoke, Prairie	45 min
Oct 24, 6:03 PM CDT	Severe Thunderstorm Warning	LZK	Monroe, Prairie, Woodruff	42 min
Oct 24, 6:04 PM CDT	Tornado Warning	SHV	Little River, Sevier	41 min
Oct 24, 6:10 PM CDT	Tornado Warning	SHV	Franklin, Morris, Titus	50 min
Oct 24, 6:12 PM CDT	Severe Thunderstorm Warning	FWD	Navarro	63 min
Oct 24, 6:19 PM CDT	Severe Thunderstorm Warning	FWD	Henderson, Kaufman, Van Zandt	86 min
Oct 24, 6:23 PM CDT	Tornado Warning	FWD	Hopkins	37 min
Oct 24, 6:25 PM CDT	Tornado Warning	FWD	Rains	35 min
Oct 24, 6:26 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Cleveland, Dallas, Drew, Lincoln	34 min
Oct 24, 6:27 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Lafayette, Nevada	55 min
Oct 24, 6:28 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Cleveland, Jefferson, Lincoln, Lonoke	47 min
Oct 24, 6:31 PM CDT	Tornado Warning	FWD	Navarro	33 min
Oct 24, 6:35 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Desha, Drew, Lincoln	40 min
Oct 24, 6:36 PM CDT	Severe Thunderstorm Warning	FWD	Rains, Van Zandt	19 min
Oct 24, 6:41 PM CDT	Tornado Warning	SHV	Hempstead, Little River, Sevier	49 min
Oct 24, 6:43 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Upshur, Wood	62 min
Oct 24, 6:49 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris, Red River, Titus	41 min
Oct 24, 6:52 PM CDT	Tornado Warning	SHV	Franklin, Wood	38 min
Oct 24, 6:55 PM CDT	Severe Thunderstorm Warning	FWD	Hopkins	65 min
Oct 24, 7:00 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Cleveland, Drew, Lincoln	45 min
Oct 24, 7:00 PM CDT	Tornado Warning	SHV	Bowie, Cass, Morris	45 min
Oct 24, 7:01 PM CDT	Severe Thunderstorm Warning	FWD	Henderson, Navarro	89 min
Oct 24, 7:06 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	54 min
Oct 24, 7:12 PM CDT	Tornado Warning	SHV	Camp, Upshur, Wood	48 min
Oct 24, 7:20 PM CDT	Tornado Warning	FWD	Anderson, Henderson	40 min
Oct 24, 7:23 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Dallas, Ouachita	52 min
Oct 24, 7:26 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Little River, Miller	64 min
Oct 24, 7:38 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Ouachita	52 min
Oct 24, 7:42 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Smith, Upshur, Wood	48 min
Oct 24, 7:48 PM CDT	Severe Thunderstorm Warning	SHV	Smith	42 min
Oct 24, 7:56 PM CDT	Tornado Warning	FWD	Anderson	34 min
Oct 24, 7:58 PM CDT	Tornado Warning	SHV	Camp, Cass, Harrison, Marion, Morris, Upshur	47 min
Oct 24, 8:11 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Smith	64 min
Oct 24, 8:15 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Hempstead, Lafayette, Miller, Nevada	45 min
Oct 24, 8:29 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Rusk, Smith	46 min
Oct 24, 8:40 PM CDT	Severe Thunderstorm Warning	FWD	Henderson, Kaufman, Van Zandt	65 min
Oct 24, 8:46 PM CDT	Tornado Warning	SHV	Cass, Harrison, Marion	44 min
Oct 24, 8:47 PM CDT	Severe Thunderstorm Warning	JAN	Ashley, Chicot	58 min
Oct 24, 9:09 PM CDT	Severe Thunderstorm Warning	SHV	Panola, Rusk	50 min
Oct 24, 9:16 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Panola, Rusk	59 min
Oct 24, 9:30 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	60 min
Oct 24, 9:38 PM CDT	Severe Thunderstorm Warning	FWD	Henderson	37 min
Oct 24, 9:44 PM CDT	Severe Thunderstorm Warning	JAN	Ashley, Chicot	42 min
Oct 24, 9:44 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Smith	46 min
Oct 24, 9:46 PM CDT	Tornado Warning	FWD	Henderson	14 min
Oct 24, 9:49 PM CDT	Flash Flood Warning	JAN	Ashley, Chicot	116 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 12:00Z, 6.9 hours before the alert went out and 89 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1476 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 505 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 290 m²/s²
0-3 km storm-relative helicity: 279 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 11.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 24, 12:51 PM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Clark, Cleveland and 21 more	84 min
Oct 24, 3:36 PM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 39 more	84 min
Oct 24, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	Lee, Phillips	5 hr
Oct 24, 6:12 PM CDT	Mesoscale Discussion	SPC	Arkansas, Bradley, Calhoun, Clark, Cleveland, Columbia and 16 more	63 min
Oct 24, 5:33 PM CDT	Mesoscale Discussion	SPC	Orleans, Saint Tammany, Tangipahoa, Washington	87 min
Oct 23, 7:21 PM CDT	Mesoscale Discussion	SPC	Cass, Cherokee, Gregg, Harrison, Marion, Morris and 3 more	54 min

Nearby

Tornado Watches in Texas, 2010 Tornado Watches in Arkansas, 2010 Tornado Watches in Louisiana, 2010 Every tornado watch in 2010

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.