Alert archive / Oklahoma / Mesoscale Discussions in 2008

Mesoscale Discussion 400

March 14, 20087 counties in Kansas; 25 counties in Oklahoma; 5 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 14, 2008, 3:23 PM CDT for 7 counties in Kansas; 25 counties in Oklahoma; 5 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Mar 14, 2008, 3:23 PM CDT (20:23 UTC)
Expired: Mar 14, 2008, 6:00 PM CDT
In force: 3 hr
Issued by: the Storm Prediction Center

All 37 counties

Barber County, KS, Comanche County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, Pratt County, KS, Sumner County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Kay County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, Noble County, OK, Oklahoma County, OK, Pawnee County, OK, Payne County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Hemphill County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX

The radar

The Vance AFB radar (KVNX), 51 km from the middle of the area, began a volume at 20:23 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

Fort Sill, OK (KFSI), launched 12:00Z, 8.4 hours before the alert went out and 186 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2421 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 249 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Mar 13, 9:10 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Choctaw, Craig, Creek, Delaware and 18 more	65 min
Mar 13, 9:50 PM CDT	Mesoscale Discussion	SPC	Choctaw, Latimer, LeFlore, McCurtain, Pushmataha	55 min
Mar 13, 10:33 PM CDT	Mesoscale Discussion	SPC	Choctaw, LeFlore, McCurtain, Pushmataha	27 min
Mar 13, 11:22 PM CDT	Severe Thunderstorm Watch	SPC	McCurtain	5 hr
Mar 13, 7:59 PM CDT	Mesoscale Discussion	SPC	Angelina, Cherokee, Harrison, Marion, Nacogdoches, Panola and 5 more	31 min
Mar 14, 1:34 AM CDT	Mesoscale Discussion	SPC	Bowie	86 min
Mar 14, 6:59 PM CDT	Mesoscale Discussion	SPC	Cass	31 min

Nearby

Mesoscale Discussions in Oklahoma, 2008 Mesoscale Discussions in Kansas, 2008 Mesoscale Discussions in Texas, 2008 Every mesoscale discussion in 2008

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.