Alert archive / Oklahoma / Mesoscale Discussions in 2008

Mesoscale Discussion 232

February 15, 200810 counties in Oklahoma; 4 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 15, 2008, 4:26 PM CST for 10 counties in Oklahoma; 4 counties in Texas. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Feb 15, 2008, 4:26 PM CST (22:26 UTC)
Expired
Feb 15, 2008, 8:30 PM CST
In force
4 hr
Issued by
the Storm Prediction Center

Counties Caddo County, OK, Canadian County, OK, Comanche County, OK, Grady County, OK, Greer County, OK, Jackson County, OK, Kiowa County, OK, Oklahoma County, OK, Tillman County, OK, Washita County, OK, Foard County, TX, Hardeman County, TX, Knox County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 64 km from the middle of the area, began a volume at 22:29 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 12:00Z, 10.4 hours before the alert went out and 125 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-pSkew-T log-p diagram, Norman, OK at 12:00Z on 2008-02-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 14 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2008-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 449 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
14 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
410 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
449 m²/s²
0-3 km storm-relative helicity
470 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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Nearby

Mesoscale Discussions in Oklahoma, 2008Mesoscale Discussions in Texas, 2008Every 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.