Alert archive / Texas / Tornado Watches in 2020

Tornado Watch 134

April 22, 202017 counties in Oklahoma; 18 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 22, 2020, 2:33 PM CDT for 17 counties in Oklahoma; 18 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 22, 2020, 2:33 PM CDT (19:33 UTC)
Expired: Apr 22, 2020, 9:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3 in
Strongest gust expected: 60 kt

All 35 counties

Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Coal County, OK, Garvin County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Latimer County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Stephens County, OK, Collin County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Fannin County, TX, Grayson County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Montague County, TX, Parker County, TX, Rains County, TX, Rockwall County, TX, Tarrant County, TX, Van Zandt County, TX, Wise County, TX

The radar

The Norman radar (KTLX), 165 km from the middle of the area, began a volume at 19:35 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: 40%
Ten or more severe wind reports: 60%
One or more gusts of 65 knots or more: 20%
Ten or more severe hail reports: 90%
One or more hailstones of 2 inches or more: 80%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 22, 3:38 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady, Stephens	52 min
Apr 22, 3:47 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Murray	43 min
Apr 22, 4:13 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Johnston, Love, Marshall	47 min
Apr 22, 4:13 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Murray, Pontotoc	47 min
Apr 22, 4:17 PM CDT	Tornado Warning	OUN	Garvin, Murray, Pontotoc	43 min
Apr 22, 4:20 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Grayson	55 min
Apr 22, 4:22 PM CDT	Tornado Warning	OUN	Carter, Johnston, Murray	53 min
Apr 22, 4:24 PM CDT	Tornado Warning	OUN	Carter, Love, Marshall	51 min
Apr 22, 4:51 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Johnston, Pontotoc	39 min
Apr 22, 4:55 PM CDT	Tornado Warning	OUN	Coal, Pontotoc	50 min
Apr 22, 4:58 PM CDT	Tornado Warning Considerable damage threat	OUN	Atoka, Bryan, Johnston, Marshall	47 min
Apr 22, 4:59 PM CDT	Tornado Warning	OUN	Coal, Johnston	46 min
Apr 22, 5:05 PM CDT	Severe Thunderstorm Warning	OUN	Bryan, Marshall	40 min
Apr 22, 5:05 PM CDT	Tornado Warning	FWD	Grayson	22 min
Apr 22, 5:15 PM CDT	Tornado Warning	OUN	Bryan, Marshall	45 min
Apr 22, 5:23 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc	24 min
Apr 22, 5:24 PM CDT	Tornado Warning	OUN	Atoka, Coal, Johnston	51 min
Apr 22, 5:39 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Atoka, Bryan	40 min
Apr 22, 5:45 PM CDT	Tornado Warning	OUN	Bryan	45 min
Apr 22, 5:55 PM CDT	Tornado Warning	TSA	Choctaw	50 min
Apr 22, 5:56 PM CDT	Tornado Warning	FWD	Fannin, Lamar	49 min
Apr 22, 6:00 PM CDT	Tornado Warning Tornado observed	TSA	Choctaw, Pushmataha	30 min
Apr 22, 6:08 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg	37 min
Apr 22, 6:11 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal	49 min
Apr 22, 6:39 PM CDT	Severe Thunderstorm Warning	FWD	Lamar	66 min
Apr 22, 6:42 PM CDT	Tornado Warning	FWD	Lamar	34 min
Apr 22, 6:45 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw	45 min
Apr 22, 6:59 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	61 min
Apr 22, 7:38 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore	37 min
Apr 22, 7:40 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Lamar	65 min
Apr 22, 7:54 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw	24 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

Fort Worth, TX (KFWD), launched 12:00Z, 7.6 hours before the alert went out and 155 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: 247 J/kg
Mixed-layer CIN: -372 J/kg
Mixed-layer LCL: 679 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 349 m²/s²
0-3 km storm-relative helicity: 308 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 21, 9:10 PM CDT	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Canadian, Carter, Cleveland and 24 more	95 min
Apr 21, 11:32 PM CDT	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Canadian, Carter, Cleveland and 24 more	88 min
Apr 22, 1:21 AM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Garvin and 7 more	84 min
Apr 22, 1:46 AM CDT	Severe Thunderstorm Watch	SPC	Atoka, Bryan, Carter, Choctaw, Garvin, Johnston and 6 more	4 hr
Apr 22, 2:16 AM CDT	Mesoscale Discussion	SPC	Beaver, Ellis, Harper, Texas, Woods, Woodward	119 min
Apr 22, 8:36 AM CDT	Mesoscale Discussion	SPC	Atoka, Blaine, Caddo, Canadian, Carter, Cleveland and 26 more	84 min
Apr 22, 8:53 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Atoka, Bryan, Caddo, Canadian, Carter and 46 more	6 hr
Apr 22, 11:29 AM CDT	Mesoscale Discussion	SPC	Atoka, Coal, Haskell, Hughes, Latimer, LeFlore and 5 more	91 min
Apr 22, 1:12 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Garvin and 7 more	63 min
Apr 22, 4:43 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Coal, Garvin, Johnston, Marshall and 2 more	62 min
Apr 22, 6:39 PM CDT	Mesoscale Discussion	SPC	McCurtain	66 min
Apr 21, 8:12 PM CDT	Mesoscale Discussion	SPC	Hemphill, Lipscomb, Wheeler	63 min
Apr 22, 10:38 AM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Austin, Bastrop, Bell, Blanco and 50 more	2 hr
Apr 22, 10:55 AM CDT	Tornado Watch	SPC	Anderson, Angelina, Austin, Bastrop, Brazos, Burleson and 31 more	6 hr
Apr 22, 1:10 PM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Austin, Bastrop, Bell, Brazos and 35 more	65 min
Apr 22, 2:53 PM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Cherokee, Houston, Nacogdoches, Panola and 5 more	67 min
Apr 22, 4:24 PM CDT	Mesoscale Discussion	SPC	Angelina, Brazos, Cherokee, Grimes, Hardin, Houston and 14 more	96 min
Apr 22, 4:47 PM CDT	Mesoscale Discussion	SPC	Angelina, Polk, San Augustine, San Jacinto, Trinity, Tyler and 1 more	88 min
Apr 22, 5:01 PM CDT	Tornado Watch	SPC	Angelina, Cherokee, Grimes, Harrison, Houston, Jasper and 14 more	9 hr
Apr 22, 5:38 PM CDT	Mesoscale Discussion	SPC	Camp, Collin, Dallas, Delta, Fannin, Franklin and 10 more	97 min
Apr 22, 5:53 PM CDT	Mesoscale Discussion	SPC	Angelina, Polk, Trinity, Tyler	37 min

Nearby

Tornado Watches in Texas, 2020 Tornado Watches in Oklahoma, 2020 Every tornado watch in 2020

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.