Alert archive / West Virginia / Mesoscale Discussions in 2011

Mesoscale Discussion 2205

September 26, 20116 states

The Storm Prediction Center issued this mesoscale discussion at Sep 26, 2011, 2:16 PM EDT for 6 states. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued: Sep 26, 2011, 2:16 PM EDT (18:16 UTC)
Expired: Sep 26, 2011, 3:15 PM EDT
In force: 59 min
Issued by: the Storm Prediction Center

All 75 counties

Floyd County, KY, Letcher County, KY, Martin County, KY, Pike County, KY, Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Gallia County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Mahoning County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Noble County, OH, Portage County, OH, Stark County, OH, Trumbull County, OH, Tuscarawas County, OH, Washington County, OH, Beaver County, PA, Crawford County, PA, Greene County, PA, Lawrence County, PA, Mercer County, PA, Washington County, PA, Hawkins County, TN, Sullivan County, TN, Washington County, TN, Buchanan County, VA, City of Bristol, VA, City of Norton, VA, Dickenson County, VA, Russell County, VA, Scott County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Boone County, WV, Braxton County, WV, Brooke County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Hancock County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, McDowell County, WV, Mingo County, WV, Nicholas County, WV, Ohio County, WV, Pleasants County, WV, Putnam County, WV, Raleigh County, WV, Ritchie County, WV, Roane County, WV, Tyler County, WV, Wayne County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 136 km from the middle of the area, began a volume at 18:16 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, 6.3 hours before the alert went out and 145 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: 391 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 898 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 226 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

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
Sep 25, 8:49 PM EDT	Mesoscale Discussion	SPC	Breckinridge, Bullitt, Butler, Caldwell, Calloway, Christian and 19 more	2 hr
Sep 26, 1:45 AM EDT	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Boone, Bourbon and 55 more	3 hr
Sep 26, 6:43 AM EDT	Tornado Watch	SPC	Bourbon, Boyle, Bracken, Campbell, Casey, Clark and 16 more	3 hr

Nearby

Mesoscale Discussions in West Virginia, 2011 Mesoscale Discussions in Ohio, 2011 Mesoscale Discussions in Virginia, 2011 Every mesoscale discussion in 2011

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.