Alert archive / Oklahoma / Mesoscale Discussions in 2020

Mesoscale Discussion 719

May 24, 202016 counties in Oklahoma; 7 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 24, 2020, 8:43 PM CDT for 16 counties in Oklahoma; 7 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 24, 2020, 8:43 PM CDT (01:43 UTC)
Expired: May 24, 2020, 10:45 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 219

All 23 counties

Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Foard County, TX, Hall County, TX, Hardeman County, TX, Wheeler County, TX

The radar

The Altus AFB radar (KFDR), 117 km from the middle of the area, began a volume at 01:43 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.

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 1.7 hours before the alert went out and 277 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: 1828 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1590 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 187 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 7.4

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 25, 1:50 PM CDT	Mesoscale Discussion	SPC	Choctaw, Haskell, Latimer, LeFlore, McCurtain, Pushmataha and 1 more	85 min
May 25, 3:39 PM CDT	Mesoscale Discussion	SPC	Haskell, LeFlore	96 min
May 25, 5:59 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Delaware, Mayes, Muskogee and 7 more	3 hr
May 25, 6:14 PM CDT	Tornado Watch	SPC	Adair, Cherokee, Craig, Delaware, Mayes, Ottawa and 1 more	5 hr
May 24, 7:05 PM CDT	Severe Thunderstorm Watch	SPC	Blanco, Brown, Burnet, Callahan, Coleman, Comal and 19 more	5 hr
May 24, 8:21 PM CDT	Mesoscale Discussion	SPC	Aransas, Atascosa, Bastrop, Bee, Bexar, Brooks and 26 more	114 min
May 24, 9:05 PM CDT	Severe Thunderstorm Watch	SPC	Aransas, Bastrop, Bee, Caldwell, Calhoun, DeWitt and 16 more	7 hr
May 24, 10:41 PM CDT	Severe Thunderstorm Watch	SPC	Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Starr and 2 more	4 hr
May 24, 11:23 PM CDT	Mesoscale Discussion	SPC	Aransas, Bee, Brooks, Calhoun, Cameron, Goliad and 11 more	2 hr
May 25, 3:19 PM CDT	Mesoscale Discussion	SPC	Maverick	116 min
May 25, 5:04 PM CDT	Mesoscale Discussion	SPC	Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Kenedy and 4 more	116 min

Nearby

Mesoscale Discussions in Oklahoma, 2020 Mesoscale Discussions in Texas, 2020 Every mesoscale discussion 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.