Alert archive / West Virginia / Mesoscale Discussions in 2021
Mesoscale Discussion 223
The Storm Prediction Center issued this mesoscale discussion at Mar 18, 2021, 2:25 PM EDT for 4 states. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 18, 2021, 2:25 PM EDT (18:25 UTC)
- Expired
- Mar 18, 2021, 5:00 PM EDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 40%
All 74 counties
Boyd County, KY, Breathitt County, KY, Carter County, KY, Elliott County, KY, Floyd County, KY, Greenup County, KY, Harlan County, KY, Johnson County, KY, Knott County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lewis County, KY, Magoffin County, KY, Martin County, KY, Menifee County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Rowan County, KY, Wolfe County, KY, Athens County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Morgan County, OH, Pike County, OH, Scioto County, OH, Vinton County, OH, Washington County, OH, Bland County, VA, Buchanan County, VA, City of Norton, VA, Dickenson County, VA, Russell County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Greenbrier County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, McDowell County, WV, Mercer County, WV, Mingo County, WV, Monroe County, WV, Nicholas County, WV, Pleasants County, WV, Putnam County, WV, Raleigh County, WV, Ritchie County, WV, Roane County, WV, Summers County, WV, Tyler County, WV, Upshur County, WV, Wayne County, WV, Webster County, WV, Wirt County, WV, Wood County, WV, Wyoming County, WV
The radar
The Charleston,WV radar (KRLX), 51 km from the middle of the area, began a volume at 18:28 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, 6.4 hours before the alert went out and 202 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
- 531 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 5:09 PM EDT | Tornado Watch | SPC | Brunswick, Greensville, Isle of Wight, Lunenburg, Mecklenburg, Southampton and 11 more | 6 hr |
| Mar 18, 5:57 PM EDT | Mesoscale Discussion | SPC | Brunswick, Charles City, Charlotte, Chesterfield, Dinwiddie, Gloucester and 32 more | 63 min |
| Mar 18, 7:49 PM EDT | Mesoscale Discussion | SPC | Amelia, Brunswick, Charles City, Chesterfield, Dinwiddie, Gloucester and 28 more | 56 min |
Nearby
Mesoscale Discussions in West Virginia, 2021Mesoscale Discussions in Kentucky, 2021Mesoscale Discussions in Ohio, 2021Every mesoscale discussion in 2021
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.