Alert archive / West Virginia / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 20
The Storm Prediction Center issued this severe thunderstorm watch at Jan 30, 2013, 8:31 AM EST for 4 states. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 30, 2013, 8:31 AM EST (13:31 UTC)
- Expired
- Jan 30, 2013, 12:48 PM EST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 67 counties
Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Monroe County, OH, Morgan County, OH, Noble 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, Bland County, VA, Carroll County, VA, City of Galax, VA, City of Radford, VA, Giles County, VA, Grayson County, VA, Pulaski County, VA, Smyth County, VA, Tazewell County, VA, Wythe County, VA, Barbour County, WV, Braxton County, WV, Brooke County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Greenbrier County, WV, Hancock County, WV, Harrison County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, McDowell County, WV, Mercer County, WV, Monongalia County, WV, Monroe County, WV, Nicholas County, WV, Ohio County, WV, Pleasants County, WV, Pocahontas County, WV, Preston County, WV, Raleigh County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Summers County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Webster County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV, Wyoming County, WV
The radar
The Charleston,WV radar (KRLX), 58 km from the middle of the area, began a volume at 13:31 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
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 30, 9:26 AM EST | Severe Thunderstorm Warning | PBZ | Jefferson | 49 min |
| Jan 30, 9:51 AM EST | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 39 min |
| Jan 30, 10:22 AM EST | Severe Thunderstorm Warning | PBZ | Allegheny, Fayette, Indiana, Washington, Westmoreland | 38 min |
| Jan 30, 10:25 AM EST | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 50 min |
| Jan 30, 10:56 AM EST | Severe Thunderstorm Warning | PBZ | Fayette, Indiana, Westmoreland | 34 min |
| Jan 30, 11:03 AM EST | Severe Thunderstorm Warning | RLX | Pocahontas, Randolph, Webster | 42 min |
| Jan 30, 11:09 AM EST | Severe Thunderstorm Warning | PBZ | Fayette | 66 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
Roanoke, VA (KRNK), launched 12:00Z, 1.5 hours before the alert went out and 183 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.
- Mixed-layer CAPE
- 5 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 561 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 299 m²/s²
- 0-3 km storm-relative helicity
- 488 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 30, 12:05 AM EST | Mesoscale Discussion | SPC | Defiance, Mercer, Paulding, Van Wert, Williams | 85 min |
| Jan 30, 1:45 AM EST | Mesoscale Discussion | SPC | Auglaize, Brown, Butler, Champaign, Clark, Clermont and 22 more | 60 min |
| Jan 30, 3:33 AM EST | Mesoscale Discussion | SPC | Adams, Brown, Clermont, Hamilton | 57 min |
| Jan 30, 4:35 AM EST | Tornado Watch | SPC | Adams, Brown, Clermont, Highland, Pike, Ross and 1 more | 4 hr |
| Jan 30, 5:51 AM EST | Tornado Watch | SPC | Gallia, Jackson, Lawrence, Meigs, Vinton | 7 hr |
| Jan 30, 7:38 AM EST | Mesoscale Discussion | SPC | Athens, Fairfield, Gallia, Hocking, Jackson, Lawrence and 8 more | 97 min |
| Jan 30, 10:19 AM EST | Mesoscale Discussion | SPC | Adams, Armstrong, Bedford, Blair, Cambria, Cameron and 20 more | 86 min |
| Jan 30, 12:54 PM EST | Mesoscale Discussion | SPC | Adams, Cumberland, Dauphin, Franklin, Fulton, Juniata and 4 more | 96 min |
| Jan 30, 3:21 PM EST | Mesoscale Discussion | SPC | Bedford, Botetourt, Campbell, Carroll, Craig, Floyd and 15 more | 84 min |
| Jan 30, 3:42 PM EST | Severe Thunderstorm Watch | SPC | Amherst, Appomattox, Bedford, Botetourt, Buckingham, Campbell and 25 more | 5 hr |
| Jan 30, 4:06 PM EST | Mesoscale Discussion | SPC | Albemarle, Amelia, Arlington, Augusta, Brunswick, Caroline and 42 more | 114 min |
| Jan 30, 6:31 PM EST | Tornado Watch | SPC | Albemarle, Arlington, Caroline, Culpeper, Fairfax, Fauquier and 17 more | 8 hr |
Nearby
Severe Thunderstorm Watches in West Virginia, 2013Severe Thunderstorm Watches in Ohio, 2013Severe Thunderstorm Watches in Virginia, 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.