Alert archive / West Virginia / Winter Storm Warnings in 2012
Winter Storm Warning 6, NWS Baltimore/Washington
NWS Baltimore/Washington issued this winter storm warning at Apr 22, 2012, 1:20 PM EDT for Highland County, Virginia; Allegany County, Maryland; Grant County, Mineral County, Pendleton County, West Virginia. It took effect at Apr 22, 2012, 11:00 PM EDT. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 22, 2012, 1:20 PM EDT (17:20 UTC)
- In effect from
- Apr 22, 2012, 11:00 PM EDT
- Expired
- Apr 23, 2012, 9:57 AM EDT
- In force
- 11 hr
- Issued by
- NWS Baltimore/Washington
Counties Allegany County, MD, Highland County, VA, Grant County, WV, Mineral County, WV, Pendleton County, WV
The radar
The Sterling radar (KLWX), 144 km from the middle of the area, began a volume at 17:19 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
Pittsburgh, PA (KPIT), launched 12:00Z, 5.3 hours before the alert went out and 173 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
- 475 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this winter storm warning went out at Apr 22, 10:55 AM EDT, 2 hours 25 minutes earlier.
Area forecast discussion, Apr 22, 10:55 AM EDT, 2 hours 25 minutes before
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</html>The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 11:34 PM EDT | Small Craft Advisory | LWX | 16 hr | |
| Apr 22, 3:42 PM EDT | Gale Warning | LWX | 7 hr | |
| Apr 22, 3:42 PM EDT | Small Craft Advisory | LWX | 54 hr | |
| Apr 22, 5:29 PM EDT | Winter Weather Advisory | LWX | Highland | 28 hr |
Nearby
Winter Storm Warnings in West Virginia, 2012Winter Storm Warnings in Virginia, 2012Winter Storm Warnings in Maryland, 2012Every winter storm warning in 2012
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.