Alert archive / West Virginia / Severe Thunderstorm Watches in 2013

Severe Thunderstorm Watch 211

May 22, 20135 states

The Storm Prediction Center issued this severe thunderstorm watch at May 22, 2013, 2:27 PM EDT for 5 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 22, 2013, 2:27 PM EDT (18:27 UTC)
Expired
May 22, 2013, 9:29 PM EDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 118 counties

Bell County, KY, Boyd County, KY, Breathitt County, KY, Carter County, KY, Clay County, KY, Elliott County, KY, Floyd County, KY, Greenup County, KY, Harlan County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Lawrence County, KY, Leslie County, KY, Letcher County, KY, Magoffin County, KY, Martin County, KY, Morgan County, KY, Perry County, KY, Pike County, KY, Whitley County, KY, Ashtabula County, OH, Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Gallia County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Jackson County, OH, Jefferson County, OH, Lawrence County, OH, Mahoning County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Portage County, OH, Stark County, OH, Trumbull County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Cambria County, PA, Cameron County, PA, Clarion County, PA, Clearfield County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, McKean County, PA, Mercer County, PA, Potter County, PA, Somerset County, PA, Tioga County, PA, Venango County, PA, Warren County, PA, Washington County, PA, Westmoreland County, PA, Buchanan County, VA, Dickenson County, VA, 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 Pittsburgh radar (KPBZ), 58 km from the middle of the area, began a volume at 18:29 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
10%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
60%
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
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 22, 5:40 PM EDTSevere Thunderstorm WarningCTPBlair, Cambria, Centre, Clearfield, Huntingdon35 min
May 22, 5:57 PM EDTSevere Thunderstorm WarningPBZAllegheny, Beaver, Washington48 min
May 22, 6:02 PM EDTSevere Thunderstorm WarningCTPBlair, Centre, Clearfield, Huntingdon43 min
May 22, 6:20 PM EDTSevere Thunderstorm WarningCTPPotter55 min
May 22, 6:33 PM EDTSevere Thunderstorm WarningCTPCameron, Centre, Clearfield, Clinton, Elk, Lycoming and 2 more57 min
May 22, 7:25 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton, Lycoming, Montour, Northumberland, Potter and 3 more65 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 (KPIT), launched 12:00Z, 6.5 hours before the alert went out and 54 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-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2013-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 47 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2013-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
47 J/kg
Mixed-layer CIN
-186 J/kg
Mixed-layer LCL
1178 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 22, 2:08 PM EDTMesoscale DiscussionSPCBoyd, Carter, Elliott, Floyd, Greenup, Johnson and 4 more2 hr
May 22, 11:31 AM EDTMesoscale DiscussionSPCLackawanna, Monroe, Pike, Susquehanna, Wayne, Wyoming119 min
May 22, 12:58 PM EDTSevere Thunderstorm WatchSPCLackawanna, Luzerne, Pike, Susquehanna, Wayne, Wyoming10 hr
May 22, 3:41 PM EDTSevere Thunderstorm WatchSPCBradford, Susquehanna, Wayne7 hr
May 22, 3:53 PM EDTMesoscale DiscussionSPCAdams, Bedford, Centre, Cumberland, Dauphin, Franklin and 11 more67 min
May 22, 4:28 PM EDTMesoscale DiscussionSPCLackawanna, Sullivan, Susquehanna, Wayne, Wyoming92 min
May 22, 6:20 PM EDTMesoscale DiscussionSPCAdams, Centre, Clinton, Cumberland, Dauphin, Franklin and 8 more85 min
May 22, 7:41 PM EDTMesoscale DiscussionSPCBradford, Lackawanna, Luzerne, Pike, Sullivan, Susquehanna and 3 more94 min

Nearby

Severe Thunderstorm Watches in West Virginia, 2013Severe Thunderstorm Watches in Ohio, 2013Severe Thunderstorm Watches in Pennsylvania, 2013Every severe thunderstorm watch in 2013

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.