Alert archive / Virginia / Mesoscale Discussions in 2015
Mesoscale Discussion 1397
The Storm Prediction Center issued this mesoscale discussion at Jul 13, 2015, 4:45 PM CDT for 5 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2015, 4:45 PM CDT (21:45 UTC)
- Expired
- Jul 13, 2015, 6:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 116 counties
Adair County, KY, Barren County, KY, Bell County, KY, Casey County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Floyd County, KY, Green County, KY, Harlan County, KY, Hart County, KY, Knott County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Marion County, KY, McCreary County, KY, Metcalfe County, KY, Monroe County, KY, Perry County, KY, Pike County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Taylor County, KY, Wayne County, KY, Whitley County, KY, Alleghany County, NC, Ashe County, NC, Avery County, NC, Caldwell County, NC, Madison County, NC, Mitchell County, NC, Stokes County, NC, Surry County, NC, Watauga County, NC, Wilkes County, NC, Yancey County, NC, Anderson County, TN, Campbell County, TN, Carter County, TN, Claiborne County, TN, Clay County, TN, Cocke County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Morgan County, TN, Pickett County, TN, Scott County, TN, Sevier County, TN, Sullivan County, TN, Unicoi County, TN, Union County, TN, Washington County, TN, Alleghany County, VA, Bath County, VA, Bedford County, VA, Bland County, VA, Botetourt County, VA, Buchanan County, VA, Carroll County, VA, City of Bristol, VA, City of Covington, VA, City of Galax, VA, City of Lexington, VA, City of Martinsville, VA, City of Norton, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, Craig County, VA, Dickenson County, VA, Floyd County, VA, Franklin County, VA, Giles County, VA, Grayson County, VA, Henry County, VA, Lee County, VA, Montgomery County, VA, Patrick County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Russell County, VA, Scott County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Wythe County, VA, Boone County, WV, Clay County, WV, Fayette County, WV, Greenbrier County, WV, Kanawha County, WV, Logan County, WV, McDowell County, WV, Mercer County, WV, Mingo County, WV, Monroe County, WV, Nicholas County, WV, Raleigh County, WV, Roane County, WV, Summers County, WV, Wyoming County, WV
The radar
The Jackson,KY radar (KJKL), 42 km from the middle of the area, began a volume at 21:46 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.8 hours before the alert went out and 251 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 765 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 11:01 AM CDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Boone and 87 more | 89 min |
| Jul 13, 11:55 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 92 more | 7 hr |
| Jul 13, 2:04 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 88 more | 86 min |
| Jul 13, 6:59 PM CDT | Mesoscale Discussion | SPC | Henderson | 91 min |
| Jul 13, 3:07 PM CDT | Mesoscale Discussion | SPC | Alexander, Alleghany, Ashe, Avery, Buncombe, Burke and 12 more | 83 min |
| Jul 13, 3:39 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Alleghany, Ashe, Avery, Buncombe, Burke and 13 more | 5 hr |
| Jul 13, 5:23 PM CDT | Severe Thunderstorm Watch | SPC | Alamance, Anson, Caswell, Chatham, Cumberland, Davidson and 21 more | 6 hr |
| Jul 13, 5:55 PM CDT | Severe Thunderstorm Watch | SPC | Cabarrus, Cherokee, Clay, Cleveland, Gaston, Graham and 11 more | 4 hr |
Nearby
Mesoscale Discussions in Virginia, 2015Mesoscale Discussions in Kentucky, 2015Mesoscale Discussions in Tennessee, 2015Every mesoscale discussion 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.