Alert archive / Oklahoma / Tornado Watches in 2024

Tornado Watch 146

April 27, 202433 counties in Oklahoma; 8 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 27, 2024, 1:10 PM CDT for 33 counties in Oklahoma; 8 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Apr 27, 2024, 1:10 PM CDT (18:10 UTC)
Expired: Apr 27, 2024, 8:00 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Particularly dangerous situation: Yes
Largest hail expected: 3 in
Strongest gust expected: 65 kt

All 41 counties

Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Roger Mills County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Norman radar (KTLX), 90 km from the middle of the area, began a volume at 18:13 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: 80%
Ten or more severe wind reports: 80%
One or more gusts of 65 knots or more: 60%
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

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

Issued	Product	Office	Counties	Lasted
Apr 27, 1:17 PM CDT	Tornado Warning	OUN	Garfield, Grant	28 min
Apr 27, 1:24 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	51 min
Apr 27, 1:28 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Roger Mills	47 min
Apr 27, 1:32 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher, Logan, Oklahoma	43 min
Apr 27, 1:38 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	52 min
Apr 27, 1:39 PM CDT	Severe Thunderstorm Warning	OUN	Grant	51 min
Apr 27, 1:43 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady	24 min
Apr 27, 1:43 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods	47 min
Apr 27, 1:46 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant	44 min
Apr 27, 1:56 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Dewey, Major, Woods	34 min
Apr 27, 2:01 PM CDT	Tornado Warning	OUN	Foard, Knox	44 min
Apr 27, 2:03 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey, Roger Mills	27 min
Apr 27, 2:04 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Greer, Jackson, Kiowa, Washita	41 min
Apr 27, 2:08 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Noble	52 min
Apr 27, 2:26 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Knox	49 min
Apr 27, 2:32 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Major	28 min
Apr 27, 2:36 PM CDT	Tornado Warning	OUN	Baylor, Foard, Knox, Wilbarger	39 min
Apr 27, 2:38 PM CDT	Tornado Warning	OUN	Kay	37 min
Apr 27, 2:41 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Major, Woodward	34 min
Apr 27, 2:42 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Kiowa, Washita	48 min
Apr 27, 2:46 PM CDT	Tornado Warning	OUN	Kay	29 min
Apr 27, 2:56 PM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	49 min
Apr 27, 2:56 PM CDT	Tornado Warning	OUN	Knox	49 min
Apr 27, 2:58 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Kiowa, Washita	47 min
Apr 27, 3:02 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OUN	Kay	19 min
Apr 27, 3:04 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Garfield, Grant, Kay, Major, Noble	41 min
Apr 27, 3:06 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Baylor, Wilbarger	39 min
Apr 27, 3:10 PM CDT	Tornado Warning	OUN	Garfield, Grant, Kay, Noble	7 min
Apr 27, 3:14 PM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	46 min
Apr 27, 3:19 PM CDT	Flash Flood Warning	OUN	Kay	3 hr
Apr 27, 3:22 PM CDT	Tornado Warning	OUN	Noble, Payne	38 min
Apr 27, 3:34 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Washita	41 min
Apr 27, 3:35 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant	40 min
Apr 27, 3:38 PM CDT	Tornado Warning	OUN	Caddo, Canadian, Washita	52 min
Apr 27, 3:41 PM CDT	Tornado Warning Considerable damage threat	OUN	Baylor, Knox	49 min
Apr 27, 3:43 PM CDT	Tornado Warning	OUN	Wichita, Wilbarger	47 min
Apr 27, 3:46 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	44 min
Apr 27, 3:51 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	39 min
Apr 27, 3:53 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Noble	22 min
Apr 27, 3:59 PM CDT	Severe Thunderstorm Warning	OUN	Knox	31 min
Apr 27, 4:05 PM CDT	Tornado Warning	OUN	Kay	5 min
Apr 27, 4:07 PM CDT	Tornado Warning	OUN	Caddo, Canadian	39 min
Apr 27, 4:14 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Baylor, Wilbarger	46 min
Apr 27, 4:18 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Noble	27 min
Apr 27, 4:19 PM CDT	Tornado Warning	OUN	Tillman	41 min
Apr 27, 4:21 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Blaine, Caddo, Canadian, Kingfisher	39 min
Apr 27, 4:22 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Noble	23 min
Apr 27, 4:24 PM CDT	Tornado Warning	OUN	Canadian	23 min
Apr 27, 4:31 PM CDT	Severe Thunderstorm Warning	OUN	Kay	29 min
Apr 27, 4:37 PM CDT	Tornado Warning	OUN	Canadian, Kingfisher	34 min
Apr 27, 4:45 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Knox	45 min
Apr 27, 4:48 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Noble	42 min
Apr 27, 4:49 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Comanche, Tillman	41 min
Apr 27, 4:52 PM CDT	Severe Thunderstorm Warning	OUN	Grant	21 min
Apr 27, 4:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Kay	49 min
Apr 27, 4:57 PM CDT	Tornado Warning	OUN	Baylor, Wichita, Wilbarger	48 min
Apr 27, 5:00 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	45 min
Apr 27, 5:02 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Wilbarger	28 min
Apr 27, 5:06 PM CDT	Flash Flood Warning	OUN	Baylor, Foard, Knox, Wilbarger	4 hr
Apr 27, 5:09 PM CDT	Severe Thunderstorm Warning	OUN	Kay	21 min
Apr 27, 5:16 PM CDT	Tornado Warning	OUN	Garfield, Kingfisher, Logan	44 min
Apr 27, 5:26 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Cotton, Tillman	49 min
Apr 27, 5:28 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Logan	47 min
Apr 27, 5:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Kay	17 min
Apr 27, 5:31 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Knox, Wilbarger	44 min
Apr 27, 5:35 PM CDT	Tornado Warning	OUN	Tillman	25 min
Apr 27, 5:42 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Wichita, Wilbarger	48 min
Apr 27, 5:52 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Garfield, Noble	38 min
Apr 27, 5:56 PM CDT	Tornado Warning	OUN	Tillman	49 min
Apr 27, 6:13 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Knox, Wichita, Wilbarger	47 min
Apr 27, 6:27 PM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble	33 min
Apr 27, 6:27 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Clay, Wichita	48 min
Apr 27, 6:35 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	40 min
Apr 27, 6:44 PM CDT	Tornado Warning	OUN	Cotton, Tillman	46 min
Apr 27, 6:57 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Knox	48 min
Apr 27, 6:59 PM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble	31 min
Apr 27, 7:12 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Cotton, Stephens, Tillman	48 min
Apr 27, 7:17 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Woodward	28 min
Apr 27, 7:17 PM CDT	Tornado Warning	OUN	Kay, Noble	28 min
Apr 27, 7:24 PM CDT	Tornado Warning	OUN	Comanche, Cotton, Stephens	36 min
Apr 27, 7:27 PM CDT	Severe Thunderstorm Warning	OUN	Kay	17 min
Apr 27, 7:36 PM CDT	Tornado Warning	OUN	Cotton, Jefferson	39 min
Apr 27, 7:42 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Knox	48 min
Apr 27, 7:45 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woodward	30 min
Apr 27, 7:45 PM CDT	Tornado Warning	OUN	Kay	30 min
Apr 27, 7:46 PM CDT	Severe Thunderstorm Warning	OUN	Grady, Stephens	29 min
Apr 27, 7:53 PM CDT	Tornado Warning	OUN	Comanche, Grady, Stephens	52 min
Apr 27, 7:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Comanche, Cotton, Garvin, Grady, Jefferson, Stephens and 1 more	49 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

Norman, OK (KOUN), launched 12:00Z, 6.2 hours before the alert went out and 84 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: 2248 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 528 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 227 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 11.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 27, 5:29 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 12 more	91 min
Apr 27, 6:27 AM CDT	Tornado Watch	SPC	Alfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 13 more	7 hr
Apr 27, 9:24 AM CDT	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Canadian, Custer, Dewey and 8 more	96 min
Apr 27, 10:57 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 20 more	93 min
Apr 27, 1:13 PM CDT	Mesoscale Discussion	SPC	Blaine, Caddo, Canadian, Comanche, Cotton, Custer and 14 more	92 min
Apr 27, 1:54 PM CDT	Mesoscale Discussion	SPC	Craig, Creek, Delaware, Kay, Lincoln, Mayes and 11 more	96 min
Apr 27, 3:19 PM CDT	Mesoscale Discussion	SPC	Comanche, Cotton, Jefferson, Stephens, Tillman	86 min
Apr 27, 5:51 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 23 more	84 min
Apr 26, 8:14 PM CDT	Mesoscale Discussion	SPC	Bowie, Camp, Cass, Morris, Titus, Upshur and 1 more	2 hr

Nearby

Tornado Watches in Oklahoma, 2024 Tornado Watches in Texas, 2024 Every tornado watch in 2024

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.