Alert archive / West Virginia / Mesoscale Discussions in 2014
Mesoscale Discussion 478
The Storm Prediction Center issued this mesoscale discussion at Apr 29, 2014, 3:58 PM EDT for 6 counties in Kentucky; 7 counties in Ohio; 29 counties in West Virginia. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Apr 29, 2014, 3:58 PM EDT (19:58 UTC)
- Expired
- Apr 29, 2014, 5:30 PM EDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 5%
All 42 counties
Boyd County, KY, Carter County, KY, Elliott County, KY, Greenup County, KY, Lawrence County, KY, Martin County, KY, Athens County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Scioto County, OH, Washington County, OH, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Nicholas County, WV, Pleasants County, WV, Putnam County, WV, Raleigh County, WV, Ritchie County, WV, Roane County, WV, Tyler County, WV, Wayne County, WV, Webster County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV, Wyoming County, WV
The radar
The Charleston,WV radar (KRLX), 34 km from the middle of the area, began a volume at 20:00 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 nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.0 hours before the alert went out and 225 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
- 178 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 493 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
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 |
|---|---|---|---|---|
| Apr 29, 3:10 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Barren, Butler, Casey, Clinton and 17 more | 65 min |
Nearby
Mesoscale Discussions in West Virginia, 2014Mesoscale Discussions in Ohio, 2014Mesoscale Discussions in Kentucky, 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.