Alert archive / West Virginia / Winter Storm Warnings in 2016

Winter Storm Warning 6, NWS Baltimore/Washington

December 29, 2016Highland County, Virginia; Allegany County, Maryland; Grant County, Mineral County, Pendleton County, West Virginia

NWS Baltimore/Washington issued this winter storm warning at Dec 29, 2016, 5:53 AM EST for Highland County, Virginia; Allegany County, Maryland; Grant County, Mineral County, Pendleton County, West Virginia. It took effect at Dec 29, 2016, 12:00 PM EST. It was in force for 30 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: Dec 29, 2016, 5:53 AM EST (10:53 UTC)
In effect from: Dec 29, 2016, 12:00 PM EST
Expired: Dec 30, 2016, 5:58 PM EST
In force: 30 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 10:52 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 (KAGC), launched 00:00Z, 10.9 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1742 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Dec 29, 3:52 AM EST, 2 hours 1 minute earlier.

Area forecast discussion, Dec 29, 3:52 AM EST, 2 hours 1 minute before

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Hazardous weather outlook, Dec 29, 3:57 AM EST, 1 hour 56 minutes before

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In the hours before

Local storm report, Dec 29, 3:39 AM EST, 2 hours 14 minutes before

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Local storm report, Dec 29, 3:40 AM EST, 2 hours 13 minutes before

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The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 28, 8:29 PM EST	Winter Weather Advisory	LWX	Clarke, Frederick, Highland, Page, Rockingham, Shenandoah and 5 more	12 hr

Nearby

Winter Storm Warnings in West Virginia, 2016 Winter Storm Warnings in Virginia, 2016 Winter Storm Warnings in Maryland, 2016 Every winter storm warning in 2016

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.