Alert archive / Oklahoma / Tornado Watches in 2023

Tornado Watch 147

April 19, 202323 counties in Oklahoma; 4 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 19, 2023, 4:48 PM CDT for 23 counties in Oklahoma; 4 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 19, 2023, 4:48 PM CDT (21:48 UTC)
Expired: Apr 19, 2023, 11:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3 in
Strongest gust expected: 60 kt

All 27 counties

Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Jefferson County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, McClain County, OK, Murray County, OK, Oklahoma County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Clay County, TX, Montague County, TX, Wichita County, TX

The radar

The Norman radar (KTLX), 42 km from the middle of the area, began a volume at 21:50 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: 40%
One or more gusts of 65 knots or more: 20%
Ten or more severe hail reports: 70%
One or more hailstones of 2 inches or more: 40%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 19, 4:50 PM CDT	Severe Thunderstorm Warning	OUN	Grady, McClain	40 min
Apr 19, 5:00 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady	45 min
Apr 19, 5:17 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	43 min
Apr 19, 5:33 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Cleveland, Grady, McClain, Oklahoma	42 min
Apr 19, 5:36 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Caddo	39 min
Apr 19, 5:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Caddo, Grady	50 min
Apr 19, 5:43 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Oklahoma	47 min
Apr 19, 5:45 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Logan, Oklahoma	45 min
Apr 19, 5:50 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady, Oklahoma	40 min
Apr 19, 6:06 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Cleveland, McClain, Oklahoma	39 min
Apr 19, 6:08 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Kingfisher	52 min
Apr 19, 6:18 PM CDT	Tornado Warning	OUN	Cleveland, McClain, Oklahoma	42 min
Apr 19, 6:21 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Noble, Payne	39 min
Apr 19, 6:22 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma, Payne	53 min
Apr 19, 6:23 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Grady, McClain	52 min
Apr 19, 6:31 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher, Logan, Oklahoma	44 min
Apr 19, 6:42 PM CDT	Tornado Warning	OUN	Grady, McClain	48 min
Apr 19, 6:50 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Logan, Noble	40 min
Apr 19, 6:56 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie	49 min
Apr 19, 6:57 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Noble, Payne	48 min
Apr 19, 7:03 PM CDT	Tornado Warning	OUN	Cleveland, Oklahoma	42 min
Apr 19, 7:05 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	40 min
Apr 19, 7:15 PM CDT	Tornado Warning	OUN	Cleveland, Grady, McClain	45 min
Apr 19, 7:20 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma	40 min
Apr 19, 7:27 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OUN	Cleveland, Grady, McClain	48 min
Apr 19, 7:34 PM CDT	Tornado Warning	OUN	Cleveland, McClain	26 min
Apr 19, 7:43 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Oklahoma	47 min
Apr 19, 7:45 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	45 min
Apr 19, 7:46 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	44 min
Apr 19, 7:46 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Grady, Stephens	44 min
Apr 19, 7:50 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Oklahoma	40 min
Apr 19, 7:56 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Cleveland, McClain	18 min
Apr 19, 7:59 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Cleveland, McClain	16 min
Apr 19, 8:01 PM CDT	Tornado Warning	OUN	Cleveland, McClain	44 min
Apr 19, 8:05 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Noble, Payne	40 min
Apr 19, 8:15 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Cleveland, McClain	45 min
Apr 19, 8:24 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Oklahoma	51 min
Apr 19, 8:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Comanche, Grady, Stephens	50 min
Apr 19, 8:36 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Stephens	39 min
Apr 19, 8:39 PM CDT	Tornado Warning	OUN	Cleveland, Pottawatomie	51 min
Apr 19, 8:44 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Cleveland, Pottawatomie	46 min
Apr 19, 8:47 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	43 min
Apr 19, 8:55 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Cleveland, Pottawatomie	35 min
Apr 19, 9:09 PM CDT	Tornado Warning	OUN	Cleveland, Pottawatomie	36 min
Apr 19, 9:12 PM CDT	Tornado Warning	OUN	Pottawatomie	48 min
Apr 19, 9:18 PM CDT	Tornado Warning	OUN	Cleveland, Pottawatomie	27 min
Apr 19, 9:24 PM CDT	Tornado Warning	OUN	Pottawatomie	51 min
Apr 19, 9:31 PM CDT	Tornado Warning	OUN	Cleveland, Pottawatomie	29 min
Apr 19, 9:43 PM CDT	Tornado Warning	OUN	Pottawatomie	32 min
Apr 19, 10:02 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Lincoln, Pottawatomie	13 min
Apr 19, 10:12 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Lincoln, Pottawatomie	14 min
Apr 19, 10:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Lincoln, Pottawatomie, Seminole	47 min
Apr 19, 10:28 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	32 min
Apr 19, 10:37 PM CDT	Tornado Warning	OUN	Lincoln, Pottawatomie	16 min
Apr 19, 10:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Lincoln, Pottawatomie	34 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, 9.8 hours before the alert went out and 25 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: 711 J/kg
Mixed-layer CIN: -395 J/kg
Mixed-layer LCL: 619 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 341 m²/s²
0-3 km storm-relative helicity: 414 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 19, 3:57 PM CDT	Mesoscale Discussion	SPC	Carter, Cleveland, Comanche, Cotton, Garvin, Grady and 5 more	2 hr
Apr 19, 6:11 PM CDT	Mesoscale Discussion	SPC	Caddo, Canadian, Cleveland, Comanche, Creek, Grady and 6 more	94 min
Apr 19, 6:31 PM CDT	Mesoscale Discussion	SPC	Creek, Lincoln, Logan, Mayes, Noble, Nowata and 9 more	59 min
Apr 19, 6:40 PM CDT	Tornado Watch	SPC	Creek, Okfuskee, Okmulgee, Osage, Pawnee, Tulsa and 1 more	5 hr

Nearby

Tornado Watches in Oklahoma, 2023 Tornado Watches in Texas, 2023 Every tornado watch in 2023

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.