Alert archive / Virginia / Mesoscale Discussions in 2014
Mesoscale Discussion 1084
The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2014, 12:06 PM EDT for 31 counties in Virginia. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 19, 2014, 12:06 PM EDT (16:06 UTC)
- Expired
- Jun 19, 2014, 2:30 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 31 counties
Albemarle County, VA, Amherst County, VA, Appomattox County, VA, Augusta County, VA, Bedford County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Charlotte County, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Lexington, VA, City of Lynchburg, VA, City of Roanoke, VA, City of Salem, VA, City of Staunton, VA, City of Waynesboro, VA, Craig County, VA, Cumberland County, VA, Fluvanna County, VA, Franklin County, VA, Goochland County, VA, Greene County, VA, Halifax County, VA, Louisa County, VA, Nelson County, VA, Pittsylvania County, VA, Powhatan County, VA, Prince Edward County, VA, Roanoke County, VA, Rockbridge County, VA
The radar
The Roanoke radar (KFCX), 119 km from the middle of the area, began a volume at 16:09 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, 4.1 hours before the alert went out and 55 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
- 1252 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 827 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 38 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 |
|---|---|---|---|---|
| Jun 18, 9:06 PM EDT | Mesoscale Discussion | SPC | Frederick, City of Winchester | 54 min |
| Jun 18, 9:37 PM EDT | Severe Thunderstorm Watch | SPC | Clarke, Frederick, City of Winchester | 5 hr |
| Jun 19, 12:18 AM EDT | Mesoscale Discussion | SPC | Arlington, Clarke, Culpeper, Fairfax, Fauquier, Frederick and 21 more | 87 min |
| Jun 19, 2:28 PM EDT | Severe Thunderstorm Watch | SPC | Accomack, Amelia, Appomattox, Bedford, Brunswick, Buckingham and 60 more | 7 hr |
| Jun 19, 6:16 PM EDT | Mesoscale Discussion | SPC | Accomack, Amelia, Amherst, Appomattox, Bedford, Brunswick and 57 more | 59 min |
Nearby
Mesoscale Discussions in Virginia, 2014Every mesoscale discussion in 2014
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.