Alert archive / West Virginia / Mesoscale Discussions in 2003

Mesoscale Discussion 140

February 22, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Feb 22, 2003, 7:56 PM EST for 4 states. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued: Feb 22, 2003, 7:56 PM EST (00:56 UTC)
Expired: Feb 22, 2003, 9:00 PM EST
In force: 64 min
Issued by: the Storm Prediction Center

All 37 counties

Bell County, KY, Boyd County, KY, Floyd County, KY, Harlan County, KY, Johnson County, KY, Knott County, KY, Lawrence County, KY, Leslie County, KY, Letcher County, KY, Magoffin County, KY, Martin County, KY, Perry County, KY, Pike County, KY, Gallia County, OH, Lawrence County, OH, Buchanan County, VA, City of Bristol, VA, City of Norton, VA, Dickenson County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Wise County, VA, Boone County, WV, Cabell County, WV, Calhoun County, WV, Gilmer County, WV, Jackson County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Putnam County, WV, Roane County, WV, Wayne County, WV, Wirt County, WV

The radar

The Jackson,KY radar (KJKL), 85 km from the middle of the area, began a volume at 00:57 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.9 hours before the alert went out and 230 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 420 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 309 m²/s²
0-3 km storm-relative helicity: 322 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, 4:45 PM EST	Mesoscale Discussion	SPC	Daviess, Hancock, Henderson, Union	5 hr
Feb 22, 8:33 PM EST	Mesoscale Discussion	SPC	Allen, Auglaize, Butler, Darke, Defiance, Fulton and 15 more	5 hr

Nearby

Mesoscale Discussions in West Virginia, 2003 Mesoscale Discussions in Kentucky, 2003 Mesoscale Discussions in Virginia, 2003 Every mesoscale discussion in 2003

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.