Alert archive / Oklahoma / Mesoscale Discussions in 2004

Mesoscale Discussion 881

May 24, 200423 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 24, 2004, 8:35 PM CDT for 23 counties in Oklahoma. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: May 24, 2004, 8:35 PM CDT (01:35 UTC)
Expired: May 24, 2004, 9:30 PM CDT
In force: 55 min
Issued by: the Storm Prediction Center

All 23 counties

Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Jackson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Major County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Tillman County, OK, Washita County, OK

The radar

The Norman radar (KTLX), 119 km from the middle of the area, began a volume at 01:38 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, 1.6 hours before the alert went out and 110 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: 2380 J/kg
Mixed-layer CIN: -223 J/kg
Mixed-layer LCL: 1159 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 10:53 PM CDT	Mesoscale Discussion	SPC	Canadian, Cherokee, Cleveland, Craig, Creek, Delaware and 24 more	97 min
May 25, 5:01 PM CDT	Mesoscale Discussion	SPC	Carter, Cotton, Garvin, Jefferson, Love, Murray and 2 more	119 min
May 25, 5:25 PM CDT	Severe Thunderstorm Watch	SPC	Carter, Comanche, Cotton, Garvin, Jefferson, Johnston and 4 more	5 hr

Nearby

Mesoscale Discussions in Oklahoma, 2004 Every mesoscale discussion in 2004

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.