Alert archive / Texas / Tornado Watches in 2022

Tornado Watch 56

March 21, 20228 counties in Arkansas; 5 parishes in Louisiana; 27 counties in Texas

The Storm Prediction Center issued this tornado watch at Mar 21, 2022, 8:09 PM CDT for 8 counties in Arkansas; 5 parishes in Louisiana; 27 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Mar 21, 2022, 8:09 PM CDT (01:09 UTC)
Expired: Mar 22, 2022, 1:58 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2.5 in
Strongest gust expected: 65 kt

All 40 counties

Columbia County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Sevier County, AR, Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA, Sabine Parish, LA, Webster Parish, LA, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Houston County, TX, Marion County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Polk County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Trinity County, TX, Upshur County, TX, Walker County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 125 km from the middle of the area, began a volume at 01:08 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: 60%
One or more EF2 to EF5 tornadoes: 50%
Ten or more severe wind reports: 70%
One or more gusts of 65 knots or more: 70%
Ten or more severe hail reports: 60%
One or more hailstones of 2 inches or more: 60%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Mar 21, 8:54 PM CDT	Tornado Warning	HGX	Brazos, Grimes, Madison, Walker	51 min
Mar 21, 9:13 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River	62 min
Mar 21, 9:33 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Titus, Upshur, Wood	42 min
Mar 21, 9:36 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Rusk, Smith, Upshur, Wood	39 min
Mar 21, 9:40 PM CDT	Tornado Warning	HGX	Grimes, Houston, Madison	50 min
Mar 21, 9:42 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River, Titus	33 min
Mar 21, 9:59 PM CDT	Tornado Warning	SHV	Smith, Upshur, Wood	29 min
Mar 21, 10:05 PM CDT	Tornado Warning	SHV	Smith	25 min
Mar 21, 10:12 PM CDT	Severe Thunderstorm Warning	SHV	Howard, Little River, Sevier	63 min
Mar 21, 10:16 PM CDT	Severe Thunderstorm Warning	SHV	Little River	59 min
Mar 21, 10:18 PM CDT	Tornado Warning Tornado observed	HGX	Houston	42 min
Mar 21, 10:25 PM CDT	Tornado Warning	SHV	Camp, Cass, Harrison, Marion, Morris, Upshur	50 min
Mar 21, 10:27 PM CDT	Tornado Warning	SHV	Gregg, Smith, Upshur	29 min
Mar 21, 10:51 PM CDT	Tornado Warning	HGX	Houston	24 min
Mar 21, 10:54 PM CDT	Severe Thunderstorm Warning	SHV	Cass, Gregg, Harrison, Marion, Morris, Smith and 1 more	36 min
Mar 21, 10:54 PM CDT	Tornado Warning	SHV	Cherokee, Nacogdoches, Rusk	51 min
Mar 21, 11:02 PM CDT	Tornado Warning	SHV	Miller	43 min
Mar 21, 11:15 PM CDT	Severe Thunderstorm Warning Considerable damage threat	SHV	Hempstead, Howard, Lafayette, Little River, Miller, Nevada	60 min
Mar 21, 11:27 PM CDT	Severe Thunderstorm Warning	SHV	Cass, Gregg, Harrison, Marion, Rusk, Smith and 2 more	63 min
Mar 21, 11:42 PM CDT	Tornado Warning	SHV	Panola, Rusk	33 min
Mar 21, 11:58 PM CDT	Flash Flood Warning	SHV	Gregg, Smith, Upshur, Wood	2 hr
Mar 22, 12:12 AM CDT	Tornado Warning	SHV	Harrison, Panola, Rusk	33 min
Mar 22, 12:15 AM CDT	Severe Thunderstorm Warning	SHV	Columbia, Hempstead, Lafayette, Miller, Nevada	60 min
Mar 22, 12:45 AM CDT	Severe Thunderstorm Warning	SHV	Caddo	45 min
Mar 22, 12:51 AM CDT	Tornado Warning	SHV	Caddo	24 min
Mar 22, 1:27 AM CDT	Tornado Warning	HGX	Grimes, Montgomery, Walker	33 min
Mar 22, 1:29 AM CDT	Severe Thunderstorm Warning	SHV	Columbia, Lafayette	61 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, 1.2 hours before the alert went out and 134 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: 7 J/kg
Mixed-layer CIN: -175 J/kg
Mixed-layer LCL: 833 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 438 m²/s²
0-3 km storm-relative helicity: 723 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 21, 9:07 PM CDT	Mesoscale Discussion	SPC	Dallas, Garland, Grant, Hot Spring, Logan, Montgomery and 6 more	53 min
Mar 21, 9:38 PM CDT	Severe Thunderstorm Watch	SPC	Bradley, Calhoun, Clark, Cleveland, Dallas, Garland and 7 more	6 hr
Mar 21, 10:51 PM CDT	Mesoscale Discussion	SPC	Hempstead, Lafayette, Little River, Miller, Nevada	114 min
Mar 21, 11:02 PM CDT	Mesoscale Discussion	SPC	Bradley, Calhoun, Clark, Cleveland, Dallas, Garland and 7 more	118 min
Mar 22, 1:58 AM CDT	Tornado Watch	SPC	Columbia, Union	5 hr
Mar 21, 7:03 PM CDT	Mesoscale Discussion	SPC	Bossier, Caddo, De Soto	57 min
Mar 22, 1:08 AM CDT	Mesoscale Discussion	SPC	Bossier, Caddo, De Soto, Webster	97 min
Mar 22, 4:00 AM CDT	Mesoscale Discussion	SPC	Bienville, Claiborne, De Soto, Jackson, Lincoln, Natchitoches and 3 more	2 hr
Mar 22, 6:15 AM CDT	Mesoscale Discussion	SPC	Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 20 more	90 min
Mar 22, 7:08 AM CDT	Tornado Watch	SPC	Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 19 more	8 hr
Mar 22, 9:43 AM CDT	Mesoscale Discussion	SPC	Acadia, Allen, Avoyelles, Cameron, Concordia, East Baton Rouge and 14 more	2 hr
Mar 22, 10:40 AM CDT	Tornado Watch	SPC	Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 19 more	8 hr
Mar 22, 12:19 PM CDT	Mesoscale Discussion	SPC	Saint Helena, Tangipahoa, Washington	116 min
Mar 22, 3:05 PM CDT	Mesoscale Discussion	SPC	Ascension, Assumption, East Baton Rouge, Livingston, Orleans, Saint Charles and 6 more	115 min
Mar 22, 5:33 PM CDT	Mesoscale Discussion	SPC	Ascension, Assumption, Livingston, Orleans, Saint Helena, Saint James and 4 more	87 min
Mar 21, 7:24 PM CDT	Mesoscale Discussion	SPC	Anderson, Bastrop, Bell, Brazos, Burleson, Caldwell and 32 more	96 min
Mar 21, 9:12 PM CDT	Mesoscale Discussion	SPC	Anderson, Brazos, Cherokee, Freestone, Henderson, Houston and 8 more	93 min
Mar 21, 10:10 PM CDT	Mesoscale Discussion	SPC	Bee, Duval, Jim Wells, Live Oak, McMullen, Refugio and 2 more	95 min
Mar 22, 12:38 AM CDT	Mesoscale Discussion	SPC	Austin, Bastrop, Brazos, Burleson, Caldwell, Colorado and 27 more	67 min
Mar 22, 12:59 AM CDT	Tornado Watch	SPC	Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 20 more	8 hr

Nearby

Tornado Watches in Texas, 2022 Tornado Watches in Arkansas, 2022 Tornado Watches in Louisiana, 2022 Every tornado watch in 2022

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.