Alert archive / West Virginia / Severe Thunderstorm Watches in 2015

Severe Thunderstorm Watch 343

June 23, 20154 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 23, 2015, 1:17 PM EDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jun 23, 2015, 1:17 PM EDT (17:17 UTC)
Expired: Jun 23, 2015, 8:28 PM EDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 69 counties

Garrett County, MD, Athens County, OH, Belmont County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Jackson County, OH, Jefferson County, OH, Lawrence County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Vinton County, OH, Washington County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Fayette County, PA, Greene County, PA, Indiana County, PA, Washington County, PA, Westmoreland County, PA, Barbour County, WV, 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, Monongalia County, WV, Nicholas County, WV, Ohio County, WV, Pleasants County, WV, Pocahontas County, WV, Preston County, WV, Putnam County, WV, Raleigh County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Wayne County, WV, Webster County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 122 km from the middle of the area, began a volume at 17:18 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 20%
One or more EF2 to EF5 tornadoes: 5%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 10%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

29 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 23, 1:30 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver	30 min
Jun 23, 1:32 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana	43 min
Jun 23, 1:35 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	25 min
Jun 23, 1:37 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler, Westmoreland	38 min
Jun 23, 1:51 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Westmoreland	24 min
Jun 23, 1:56 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	19 min
Jun 23, 1:59 PM EDT	Flash Flood Warning	PBZ	Allegheny, Armstrong, Butler, Indiana, Westmoreland	2 hr
Jun 23, 2:12 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Guernsey, Monroe, Noble	48 min
Jun 23, 2:13 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	17 min
Jun 23, 2:15 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	30 min
Jun 23, 2:19 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington	41 min
Jun 23, 2:25 PM EDT	Flash Flood Warning	PBZ	Armstrong, Indiana, Westmoreland	3 hr
Jun 23, 2:43 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	17 min
Jun 23, 2:53 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington	52 min
Jun 23, 2:55 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Indiana, Westmoreland	39 min
Jun 23, 3:03 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	42 min
Jun 23, 3:06 PM EDT	Severe Thunderstorm Warning	RLX	Athens, Meigs, Vinton	24 min
Jun 23, 3:16 PM EDT	Flash Flood Warning	PBZ	Allegheny, Washington	3 hr
Jun 23, 3:16 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	29 min
Jun 23, 3:19 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	56 min
Jun 23, 3:34 PM EDT	Severe Thunderstorm Warning	RLX	Jackson	26 min
Jun 23, 3:47 PM EDT	Severe Thunderstorm Warning	PBZ	Garrett	58 min
Jun 23, 4:04 PM EDT	Tornado Warning	PBZ	Garrett	26 min
Jun 23, 4:14 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	31 min
Jun 23, 4:21 PM EDT	Severe Thunderstorm Warning	PBZ	Tucker	54 min
Jun 23, 4:25 PM EDT	Severe Thunderstorm Warning	PBZ	Garrett	49 min
Jun 23, 4:49 PM EDT	Flash Flood Warning	PBZ	Garrett	3 hr
Jun 23, 5:53 PM EDT	Severe Thunderstorm Warning	RLX	Logan, McDowell, Wyoming	37 min
Jun 23, 6:34 PM EDT	Severe Thunderstorm Warning	RLX	McDowell, Wyoming	26 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 5.3 hours before the alert went out and 156 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: 1125 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 899 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 198 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 4.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 10:28 AM EDT	Mesoscale Discussion	SPC	Boyd, Carter, Elliott, Greenup	2 hr
Jun 23, 3:25 PM EDT	Mesoscale Discussion	SPC	Boyd, Carter, Elliott, Lawrence, Martin	95 min
Jun 23, 1:45 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more	3 hr
Jun 23, 4:09 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 17 more	7 hr
Jun 23, 5:47 PM EDT	Mesoscale Discussion	SPC	Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 17 more	88 min
Jun 23, 7:41 PM EDT	Mesoscale Discussion	SPC	Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 17 more	94 min
Jun 22, 8:31 PM EDT	Mesoscale Discussion	SPC	Fulton, Williams	59 min
Jun 22, 9:17 PM EDT	Tornado Watch	SPC	Defiance, Fulton, Henry, Paulding, Williams	6 hr
Jun 22, 11:00 PM EDT	Mesoscale Discussion	SPC	Fulton, Williams	60 min
Jun 23, 2:43 AM EDT	Mesoscale Discussion	SPC	Cuyahoga, Erie, Fulton, Geauga, Hancock, Henry and 10 more	2 hr
Jun 23, 3:30 AM EDT	Severe Thunderstorm Watch	SPC	Ashtabula, Cuyahoga, Geauga, Lake, Lorain, Medina and 3 more	3 hr
Jun 23, 5:30 AM EDT	Mesoscale Discussion	SPC	Ashtabula, Cuyahoga, Geauga, Lake, Lorain, Mahoning and 4 more	60 min
Jun 23, 4:24 AM EDT	Mesoscale Discussion	SPC	McKean, Potter, Warren	66 min
Jun 23, 6:08 AM EDT	Severe Thunderstorm Watch	SPC	Bradford, Cameron, Centre, Clearfield, Clinton, Elk and 11 more	4 hr
Jun 23, 8:39 AM EDT	Mesoscale Discussion	SPC	Cameron, Centre, Clearfield, Clinton, Columbia, Elk and 12 more	96 min
Jun 23, 10:20 AM EDT	Severe Thunderstorm Watch	SPC	Adams, Bedford, Berks, Blair, Bucks, Cambria and 30 more	7 hr

Nearby

Severe Thunderstorm Watches in West Virginia, 2015 Severe Thunderstorm Watches in Ohio, 2015 Severe Thunderstorm Watches in Pennsylvania, 2015 Every severe thunderstorm watch in 2015

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.