Alert archive / West Virginia / Mesoscale Discussions in 2005

Mesoscale Discussion 2047

August 20, 20055 states

The Storm Prediction Center issued this mesoscale discussion at Aug 20, 2005, 7:10 PM EDT for 5 states. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Aug 20, 2005, 7:10 PM EDT (23:10 UTC)
Expired: Aug 20, 2005, 8:45 PM EDT
In force: 95 min
Issued by: the Storm Prediction Center

All 72 counties

Bath County, KY, Boyd County, KY, Carter County, KY, Elliott County, KY, Fleming County, KY, Greenup County, KY, Lawrence County, KY, Lewis County, KY, Montgomery County, KY, Rowan County, KY, Allegany County, MD, Garrett County, MD, Washington County, MD, Athens County, OH, Belmont County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Monroe County, OH, Noble County, OH, Scioto County, OH, Washington County, OH, Allegheny County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Centre County, PA, Cumberland County, PA, Fayette County, PA, Franklin County, PA, Fulton County, PA, Greene County, PA, Huntingdon County, PA, Indiana County, PA, Juniata County, PA, Mifflin County, PA, Perry County, PA, Somerset County, PA, Washington County, PA, Westmoreland County, PA, Barbour County, WV, Braxton County, WV, Brooke County, WV, Cabell County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Mineral County, WV, Monongalia County, WV, Morgan County, WV, Ohio County, WV, Pleasants County, WV, Preston County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tyler County, WV, Upshur County, WV, Wayne County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 139 km from the middle of the area, began a volume at 22:56 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

Pittsburgh, PA (KPIT), launched 12:00Z, 11.2 hours before the alert went out and 128 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: 922 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 51 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
Aug 20, 12:31 PM EDT	Mesoscale Discussion	SPC	Boone, Bourbon, Bracken, Campbell, Carroll, Fleming and 18 more	89 min
Aug 20, 1:15 PM EDT	Severe Thunderstorm Watch	SPC	Anderson, Boone, Bracken, Bullitt, Campbell, Carroll and 17 more	6 hr
Aug 20, 2:35 PM EDT	Mesoscale Discussion	SPC	Ballard, Carlisle, Fulton, Graves, Hickman, Livingston and 2 more	115 min
Aug 20, 3:11 PM EDT	Mesoscale Discussion	SPC	Anderson, Boone, Bourbon, Bracken, Bullitt, Campbell and 23 more	94 min
Aug 20, 4:06 PM EDT	Mesoscale Discussion	SPC	Bath, Boyd, Carter, Clark, Elliott, Greenup and 5 more	84 min
Aug 20, 4:55 PM EDT	Severe Thunderstorm Watch	SPC	Bath, Bourbon, Boyd, Carter, Clark, Elliott and 11 more	6 hr
Aug 20, 3:10 PM EDT	Severe Thunderstorm Watch	SPC	Belmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison and 9 more	6 hr
Aug 19, 8:29 PM EDT	Mesoscale Discussion	SPC	Forest, Warren	31 min

Nearby

Mesoscale Discussions in West Virginia, 2005 Mesoscale Discussions in Pennsylvania, 2005 Mesoscale Discussions in Kentucky, 2005 Every mesoscale discussion in 2005

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.