Alert archive / Oklahoma / Mesoscale Discussions in 2007

Mesoscale Discussion 189

February 24, 200722 counties in Oklahoma; 10 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 24, 2007, 5:20 AM CST for 22 counties in Oklahoma; 10 counties in Texas. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: Feb 24, 2007, 5:20 AM CST (11:20 UTC)
Expired: Feb 24, 2007, 6:15 AM CST
In force: 55 min
Issued by: the Storm Prediction Center

All 32 counties

Carter County, OK, Cleveland County, OK, Creek County, OK, Garvin County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Pawnee County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Comanche County, TX, Cooke County, TX, Eastland County, TX, Erath County, TX, Hood County, TX, Jack County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Wise County, TX

The radar

The Altus AFB radar (KFDR), 131 km from the middle of the area, began a volume at 11:21 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 Worth, TX (KFWD), launched 00:00Z, 11.3 hours before the alert went out and 127 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: 10 J/kg
Mixed-layer CIN: -317 J/kg
Mixed-layer LCL: 805 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 230 m²/s²
0-3 km storm-relative helicity: 389 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
Feb 23, 6:15 PM CST	Mesoscale Discussion	SPC	Beaver, Beckham, Ellis, Greer, Harmon, Harper and 2 more	90 min
Feb 23, 7:35 PM CST	Mesoscale Discussion	SPC	Alfalfa, Blaine, Caddo, Canadian, Comanche, Cotton and 19 more	85 min
Feb 23, 9:01 PM CST	Mesoscale Discussion	SPC	Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 18 more	89 min
Feb 23, 9:26 PM CST	Tornado Watch	SPC	Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 41 more	9 hr
Feb 23, 11:35 PM CST	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Cleveland, Coal and 23 more	115 min
Feb 24, 3:38 AM CST	Mesoscale Discussion	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 43 more	97 min
Feb 24, 8:29 AM CST	Mesoscale Discussion	SPC	LeFlore, McCurtain, Sequoyah	61 min
Feb 24, 8:47 AM CST	Tornado Watch PDS	SPC	Haskell, Latimer, LeFlore, McCurtain, Sequoyah	9 hr
Feb 24, 10:35 AM CST	Mesoscale Discussion	SPC	Bowie, Cass, Harrison, Marion, Panola	115 min
Feb 24, 4:31 PM CST	Mesoscale Discussion	SPC	Newton, Orange	59 min

Nearby

Mesoscale Discussions in Oklahoma, 2007 Mesoscale Discussions in Texas, 2007 Every mesoscale discussion in 2007

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.