Alert archive / West Virginia / Severe Thunderstorm Watches in 2011
Severe Thunderstorm Watch 381
The Storm Prediction Center issued this severe thunderstorm watch at May 26, 2011, 1:42 PM EDT for Allegany County, Garrett County, Washington County, Maryland; 38 counties in Virginia; 48 counties in West Virginia. It was in force for 11 hr.
The area
The outline as issued.
The facts
- Issued
- May 26, 2011, 1:42 PM EDT (17:42 UTC)
- Expired
- May 27, 2011, 1:00 AM EDT
- In force
- 11 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 89 counties
Allegany County, MD, Garrett County, MD, Washington County, MD, Alleghany County, VA, Augusta County, VA, Bath County, VA, Bland County, VA, Botetourt County, VA, Buchanan County, VA, Carroll County, VA, City of Buena Vista, VA, City of Covington, VA, City of Galax, VA, City of Harrisonburg, VA, City of Lexington, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Craig County, VA, Dickenson County, VA, Floyd County, VA, Frederick County, VA, Giles County, VA, Grayson County, VA, Highland County, VA, Montgomery County, VA, Page County, VA, Patrick County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Smyth County, VA, Tazewell County, VA, Warren County, VA, Wythe County, VA, Barbour County, WV, Berkeley County, WV, Boone County, WV, Braxton County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Grant County, WV, Greenbrier County, WV, Hampshire County, WV, Hardy County, WV, Harrison County, WV, Jackson County, WV, Jefferson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Marion County, WV, McDowell County, WV, Mercer County, WV, Mineral County, WV, Mingo County, WV, Monongalia County, WV, Monroe County, WV, Morgan County, WV, Nicholas County, WV, Pendleton 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, 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), 70 km from the middle of the area, began a volume at 17:42 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
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
69 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 2:58 PM EDT | Severe Thunderstorm Warning | RNK | Greenbrier, Monroe, Summers | 62 min |
| May 26, 3:03 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 42 min |
| May 26, 3:38 PM EDT | Severe Thunderstorm Warning | RNK | Greenbrier, Mercer, Summers | 67 min |
| May 26, 3:40 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 65 min |
| May 26, 3:51 PM EDT | Severe Thunderstorm Warning | LWX | Highland | 39 min |
| May 26, 3:57 PM EDT | Severe Thunderstorm Warning | RLX | Pocahontas | 48 min |
| May 26, 3:58 PM EDT | Severe Thunderstorm Warning | LWX | Highland | 62 min |
| May 26, 4:01 PM EDT | Severe Thunderstorm Warning | RNK | Greenbrier, Monroe, Summers | 59 min |
| May 26, 4:09 PM EDT | Flash Flood Warning | LWX | Allegany | 4 hr |
| May 26, 4:11 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 49 min |
| May 26, 4:15 PM EDT | Severe Thunderstorm Warning | RNK | Mercer, Summers | 34 min |
| May 26, 4:19 PM EDT | Severe Thunderstorm Warning | RLX | Pocahontas | 41 min |
| May 26, 4:21 PM EDT | Severe Thunderstorm Warning | PBZ | Marion, Monongalia, Preston | 39 min |
| May 26, 4:22 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 38 min |
| May 26, 4:29 PM EDT | Tornado Warning | LWX | Allegany, Washington | 31 min |
| May 26, 4:39 PM EDT | Severe Thunderstorm Warning | RLX | Pocahontas | 66 min |
| May 26, 4:41 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 49 min |
| May 26, 4:42 PM EDT | Severe Thunderstorm Warning | RNK | Greenbrier, Mercer, Monroe, Summers | 44 min |
| May 26, 4:51 PM EDT | Tornado Warning | LWX | Allegany, Washington | 39 min |
| May 26, 4:55 PM EDT | Tornado Warning | LWX | Allegany | 35 min |
| May 26, 4:57 PM EDT | Flash Flood Warning | LWX | Highland | 2 hr |
| May 26, 5:00 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Bath | 60 min |
| May 26, 5:16 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham, Shenandoah | 59 min |
| May 26, 5:16 PM EDT | Flash Flood Warning | RLX | Pocahontas | 3 hr |
| May 26, 5:18 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 26 min |
| May 26, 5:24 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 22 min |
| May 26, 5:27 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 48 min |
| May 26, 5:36 PM EDT | Severe Thunderstorm Warning | RNK | Bland, Grayson, Smyth, Wythe | 50 min |
| May 26, 5:41 PM EDT | Tornado Warning | LWX | Frederick, Shenandoah | 31 min |
| May 26, 5:54 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 51 min |
| May 26, 6:09 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Frederick, Shenandoah, City of Winchester | 32 min |
| May 26, 6:09 PM EDT | Severe Thunderstorm Warning | RLX | Buchanan | 66 min |
| May 26, 6:17 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham, Shenandoah | 18 min |
| May 26, 6:21 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, Highland, Rockingham | 39 min |
| May 26, 6:26 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 45 min |
| May 26, 6:38 PM EDT | Severe Thunderstorm Warning | RNK | Bland, Grayson, Smyth, Wythe | 67 min |
| May 26, 6:46 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 59 min |
| May 26, 6:51 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham, Shenandoah | 28 min |
| May 26, 7:38 PM EDT | Severe Thunderstorm Warning | RNK | Bland, Giles, Pulaski, Wythe | 41 min |
| May 26, 7:48 PM EDT | Severe Thunderstorm Warning | RNK | Bland, Giles, Smyth, Tazewell, Wythe | 57 min |
| May 26, 7:58 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Craig, Floyd, Montgomery, Pulaski, Roanoke and 2 more | 62 min |
| May 26, 8:03 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Pulaski, Wythe, City of Galax | 42 min |
| May 26, 8:12 PM EDT | Severe Thunderstorm Warning | RNK | Bland, Carroll, Grayson, Pulaski, Wythe | 48 min |
| May 26, 8:15 PM EDT | Severe Thunderstorm Warning | RNK | Craig, Giles, Pulaski | 44 min |
| May 26, 8:15 PM EDT | Severe Thunderstorm Warning | RLX | Barbour, Doddridge, Harrison, Lewis, Taylor, Upshur | 45 min |
| May 26, 8:16 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Grayson, City of Galax | 59 min |
| May 26, 8:43 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Floyd, Montgomery, Pulaski, Wythe, City of Radford | 62 min |
| May 26, 8:50 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 25 min |
| May 26, 8:57 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Botetourt, Craig, Montgomery, Roanoke, City of Covington and 2 more | 63 min |
| May 26, 9:04 PM EDT | Flash Flood Warning | RNK | Carroll, Floyd, Grayson, Pulaski, Wythe, City of Galax | 4 hr |
| May 26, 9:15 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Grayson, City of Galax | 60 min |
| May 26, 9:38 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Patrick | 67 min |
| May 26, 10:17 PM EDT | Severe Thunderstorm Warning | LWX | Highland | 43 min |
| May 26, 10:17 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Floyd, Grayson, Montgomery, Pulaski, Wythe and 2 more | 58 min |
| May 26, 10:25 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Bath, Botetourt, City of Covington | 48 min |
| May 26, 10:36 PM EDT | Flash Flood Warning | RNK | Alleghany, Bath, Botetourt, Craig, Floyd, Giles and 5 more | 6 hr |
| May 26, 10:52 PM EDT | Severe Thunderstorm Warning | RNK | Henry, Patrick | 53 min |
| May 26, 10:53 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, Highland, Rockingham | 52 min |
| May 26, 10:58 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Floyd, Franklin, Henry, Patrick | 62 min |
| May 26, 11:07 PM EDT | Tornado Warning | LWX | Rockingham | 38 min |
| May 26, 11:18 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, Highland, Rockingham, City of Harrisonburg, City of Staunton | 42 min |
| May 26, 11:23 PM EDT | Flash Flood Warning | LWX | Augusta, Highland, Rockingham | 3 hr |
| May 26, 11:32 PM EDT | Tornado Warning | LWX | Grant, Hardy | 28 min |
| May 26, 11:47 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 58 min |
| May 26, 11:52 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, Page, Rockingham, Shenandoah | 53 min |
| May 27, 12:13 AM EDT | Severe Thunderstorm Warning | RNK | Amherst, Bedford, Botetourt, Campbell, Franklin, Pittsylvania and 2 more | 47 min |
| May 27, 12:28 AM EDT | Severe Thunderstorm Warning | LWX | Frederick, Shenandoah, Warren | 47 min |
| May 27, 12:40 AM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Bath, Bedford, Botetourt, Roanoke, Rockbridge | 50 min |
| May 27, 1:00 AM EDT | Severe Thunderstorm Warning | LWX | Washington | 45 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, 5.7 hours before the alert went out and 169 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
- 734 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 1098 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 15 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 |
|---|---|---|---|---|
| May 25, 8:14 PM EDT | Mesoscale Discussion | SPC | Boone, Bourbon, Bracken, Campbell, Carroll, Fleming and 15 more | 2 hr |
| May 25, 8:40 PM EDT | Mesoscale Discussion | SPC | Breckinridge, Butler, Caldwell, Calloway, Christian, Crittenden and 25 more | 2 hr |
| May 25, 9:33 PM EDT | Tornado Watch | SPC | Adair, Allen, Anderson, Barren, Boone, Bourbon and 65 more | 7 hr |
| May 26, 1:15 PM EDT | Mesoscale Discussion | SPC | Letcher, Pike | 90 min |
| May 26, 3:09 PM EDT | Mesoscale Discussion | SPC | Adair, Anderson, Bath, Bourbon, Boyle, Bracken and 49 more | 96 min |
| May 26, 4:30 PM EDT | Mesoscale Discussion | SPC | Pike | 60 min |
| May 26, 10:15 AM EDT | Severe Thunderstorm Watch | SPC | Lee, Russell, Scott, Washington, Wise, City of Bristol and 1 more | 9 hr |
| May 26, 4:36 PM EDT | Mesoscale Discussion | SPC | Russell, Scott, Washington, Wise, City of Bristol, City of Norton | 84 min |
| May 26, 5:10 PM EDT | Severe Thunderstorm Watch | SPC | Lee, Russell, Scott, Washington, Wise, City of Bristol and 1 more | 7 hr |
| May 26, 2:37 AM EDT | Mesoscale Discussion | SPC | Hancock | 83 min |
| May 26, 6:06 PM EDT | Severe Thunderstorm Watch | SPC | Brooke, Hancock, Marshall, Ohio | 6 hr |
Nearby
Severe Thunderstorm Watches in West Virginia, 2011Severe Thunderstorm Watches in Virginia, 2011Severe Thunderstorm Watches in Maryland, 2011Every severe thunderstorm watch 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.