Alert archive / West Virginia / Winter Storm Warnings in 2019

Winter Storm Warning 9, NWS Baltimore/Washington

December 1, 2019Grant County, Pendleton County, West Virginia

NWS Baltimore/Washington issued this winter storm warning at Dec 1, 2019, 3:10 PM EST for Grant County, Pendleton County, West Virginia. It took effect at Dec 2, 2019, 6:00 AM EST. It was in force for 12 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 1, 2019, 3:10 PM EST (20:10 UTC)
In effect from: Dec 2, 2019, 6:00 AM EST
Expired: Dec 2, 2019, 6:28 PM EST
In force: 12 hr
Issued by: NWS Baltimore/Washington

Counties Grant County, WV, Pendleton County, WV

The radar

The Sterling radar (KLWX), 155 km from the middle of the area, began a volume at 20:10 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

Roanoke, VA (KRNK), launched 12:00Z, 8.2 hours before the alert went out and 189 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: 828 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 451 m²/s²
0-3 km storm-relative helicity: 614 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 1, 10:45 AM EST, 4 hours 25 minutes earlier.

Area forecast discussion, Dec 1, 10:45 AM EST, 4 hours 25 minutes before

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Hazardous weather outlook, Dec 1, 12:46 PM EST, 2 hours 24 minutes before

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In the hours before

Local storm report, Dec 1, 10:25 AM EST, 4 hours 45 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 1, 12:19 PM EST	Small Craft Advisory	LWX		54 hr
Dec 1, 3:10 PM EST	Winter Weather Advisory	LWX	Highland	27 hr
Nov 30, 11:48 PM EST	Coastal Flood Advisory	LWX	Harford	104 min
Dec 1, 7:00 AM EST	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Calvert, Saint Mary's, City of Baltimore	18 hr

Nearby

Winter Storm Warnings in West Virginia, 2019 Every winter storm warning in 2019

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.