Alert archive / West Virginia / Mesoscale Discussions in 2009

Mesoscale Discussion 935

June 3, 200917 counties in Kentucky; 9 counties in Ohio; 30 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2009, 12:12 PM EDT for 17 counties in Kentucky; 9 counties in Ohio; 30 counties in West Virginia. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: Jun 3, 2009, 12:12 PM EDT (16:12 UTC)
Expired: Jun 3, 2009, 1:45 PM EDT
In force: 93 min
Issued by: the Storm Prediction Center

All 56 counties

Bath County, KY, Boyd County, KY, Breathitt County, KY, Carter County, KY, Elliott County, KY, Estill County, KY, Greenup County, KY, Johnson County, KY, Lawrence County, KY, Lee County, KY, Magoffin County, KY, Martin County, KY, Menifee County, KY, Morgan County, KY, Powell County, KY, Rowan County, KY, Wolfe County, KY, Athens County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Pike County, OH, Scioto County, OH, Vinton County, OH, Washington County, OH, Barbour County, WV, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay 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, Mason County, WV, Monongalia County, WV, Nicholas County, WV, Pleasants County, WV, Putnam County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tyler County, WV, Upshur County, WV, Wayne County, WV, Webster County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 54 km from the middle of the area, began a volume at 16:16 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 325Jun 3, 1:05 PM EDT

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.2 hours before the alert went out and 164 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: 80 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 691 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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
Jun 2, 9:19 PM EDT	Mesoscale Discussion	SPC	Anderson, Bath, Boone, Bourbon, Boyd, Bracken and 34 more	56 min
Jun 3, 3:36 PM EDT	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Boyle, Breckinridge and 46 more	54 min
Jun 3, 3:57 PM EDT	Severe Thunderstorm Watch	SPC	Adair, Allen, Anderson, Barren, Boyle, Breckinridge and 37 more	5 hr
Jun 3, 1:06 PM EDT	Severe Thunderstorm Watch	SPC	Berkeley, Boone, Braxton, Calhoun, Clay, Fayette and 27 more	9 hr
Jun 3, 4:34 PM EDT	Mesoscale Discussion	SPC	Boone, Braxton, Clay, Fayette, Greenbrier, Hardy and 14 more	86 min
Jun 3, 7:10 PM EDT	Mesoscale Discussion	SPC	Berkeley, Grant, Hampshire, Hardy, Jefferson, McDowell and 5 more	95 min

Nearby

Mesoscale Discussions in West Virginia, 2009 Mesoscale Discussions in Kentucky, 2009 Mesoscale Discussions in Ohio, 2009 Every mesoscale discussion in 2009

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.