Alert archive / Oklahoma / Mesoscale Discussions in 2019

Mesoscale Discussion 804

May 25, 20194 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 25, 2019, 11:00 PM CDT for 4 counties in Oklahoma. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: May 25, 2019, 11:00 PM CDT (04:00 UTC)
Expired: May 26, 2019, 12:00 AM CDT
In force: 60 min
Issued by: the Storm Prediction Center

Counties Creek County, OK, Lincoln County, OK, Okfuskee County, OK, Oklahoma County, OK

The radar

The Norman radar (KTLX), 43 km from the middle of the area, began a volume at 03:59 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

Norman, OK (KOUN), launched 00:00Z, 4.0 hours before the alert went out and 60 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: 1531 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 1082 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 12.6

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, 8:21 PM CDT	Mesoscale Discussion	SPC	Nowata, Osage, Pawnee, Rogers, Washington	54 min
May 25, 8:47 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Cherokee, Craig, Creek, Delaware, McIntosh and 13 more	6 hr
May 25, 8:55 PM CDT	Mesoscale Discussion	SPC	Beckham, Custer, Greer, Harmon, Jackson, Kiowa and 1 more	95 min
May 26, 1:39 AM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Delaware, Ottawa, Sequoyah	2 hr
May 26, 12:19 PM CDT	Mesoscale Discussion	SPC	Beaver, Cimarron, Texas	116 min
May 26, 2:32 PM CDT	Tornado Watch	SPC	Cimarron, Texas	7 hr
May 26, 3:43 PM CDT	Mesoscale Discussion	SPC	Cimarron, Texas	92 min
May 26, 6:04 PM CDT	Mesoscale Discussion	SPC	Cimarron, Texas	86 min
May 26, 6:56 PM CDT	Mesoscale Discussion	SPC	Cimarron, Texas	64 min

Nearby

Mesoscale Discussions in Oklahoma, 2019 Every mesoscale discussion in 2019

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.