Alert archive / West Virginia / Mesoscale Discussions in 2011
Mesoscale Discussion 985
The Storm Prediction Center issued this mesoscale discussion at May 26, 2011, 4:30 PM EDT for 4 states. It was in force for 60 min.
The area
The outline as issued.
The facts
- Issued
- May 26, 2011, 4:30 PM EDT (20:30 UTC)
- Expired
- May 26, 2011, 5:30 PM EDT
- In force
- 60 min
- Issued by
- the Storm Prediction Center
All 62 counties
Pike County, KY, Garrett County, MD, Alleghany County, VA, Bath County, VA, Bland County, VA, Buchanan County, VA, City of Bristol, VA, City of Covington, VA, City of Galax, VA, City of Norton, VA, City of Radford, VA, Craig County, VA, Dickenson County, VA, Giles County, VA, Grayson County, VA, Highland County, VA, Lee County, VA, Montgomery County, VA, Pulaski County, VA, Russell County, VA, Scott County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Wythe County, VA, Barbour 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, Kanawha County, WV, Lewis County, WV, Logan County, WV, Marion County, WV, McDowell County, WV, Mercer County, WV, Mineral County, WV, Mingo County, WV, Monroe County, WV, Nicholas County, WV, Pendleton County, WV, Pocahontas County, WV, Preston County, WV, Raleigh County, WV, Randolph County, WV, Roane County, WV, Summers County, WV, Taylor County, WV, Tucker County, WV, Upshur County, WV, Webster County, WV, Wetzel County, WV, Wyoming County, WV
The radar
The Charleston,WV radar (KRLX), 86 km from the middle of the area, began a volume at 20:32 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.
The nearest sounding before it
Roanoke, VA (KRNK), launched 12:00Z, 8.5 hours before the alert went out and 171 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
The text
As transmitted, in the capitals the NWS used until 2016.
109 ACUS11 KWNS 262030 SWOMCD SPC MCD 262030 WVZ000-MDZ000-VAZ000-NCZ000-TNZ000-KYZ000-262130- MESOSCALE DISCUSSION 0985 NWS STORM PREDICTION CENTER NORMAN OK 0330 PM CDT THU MAY 26 2011 AREAS AFFECTED...WRN VA...WV CONCERNING...SEVERE THUNDERSTORM WATCH 381... VALID 262030Z - 262130Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 381 CONTINUES. MOST BUOYANT AND STEEPER LAPSE RATE ENVIRONMENT CONTINUES TO COVER THE ERN HALF OF WW 381. THIS IS REFLECTED WELL IN ONGOING CONVECTION WHERE STRONGEST UPDRAFTS ARE CONCENTRATED COINCIDENT WITH HIGHER ELEVATIONS. ALTHOUGH STRONGER FORCING REMAINS JUST WEST OF THIS REGION OVER THE OH/TN VALLEY REGION...OROGRAPHIC FORCING IS LIKELY CONTRIBUTING TO RENEWED TSTM DEVELOPMENT WHERE HEATING IS STRONGEST. THIS ACTIVITY HAS STRUGGLED TO MOVE OFF THE MOUNTAINS AND SHOULD PRIMARILY LIFT NNEWD ALONG CORRIDOR OF HIGHEST TERRAIN. ..DARROW.. 05/26/2011 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LWX...RNK...PBZ...RLX...MRX...JKL... LAT...LON 39608066 39617823 36558092 36558326 39608066
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, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett, Washington | 11 hr |
| 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
Mesoscale Discussions in West Virginia, 2011Mesoscale Discussions in Virginia, 2011Mesoscale Discussions in Kentucky, 2011Every mesoscale discussion 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.