Alert archive / West Virginia / Winter Storm Watches in 2021

Winter Storm Watch 7, NWS Baltimore/Washington

February 14, 2021Allegany County, Washington County, Maryland; Hampshire County, Mineral County, Morgan County, West Virginia

NWS Baltimore/Washington issued this winter storm watch at Feb 14, 2021, 2:32 PM EST for Allegany County, Washington County, Maryland; Hampshire County, Mineral County, Morgan County, West Virginia. It took effect at Feb 15, 2021, 6:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 14, 2021, 2:32 PM EST (19:32 UTC)
In effect from: Feb 15, 2021, 6:00 PM EST
Expired: Feb 15, 2021, 4:24 AM EST
In force
Issued by: NWS Baltimore/Washington

Counties Allegany County, MD, Washington County, MD, Hampshire County, WV, Mineral County, WV, Morgan County, WV

The radar

The Sterling radar (KLWX), 103 km from the middle of the area, began a volume at 19:33 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.5 hours before the alert went out and 111 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: 532 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: 122 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 watch 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 watch went out at Feb 14, 10:01 AM EST, 4 hours 31 minutes earlier.

Area forecast discussion, Feb 14, 10:01 AM EST, 4 hours 31 minutes before

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Hazardous weather outlook, Feb 14, 10:00 AM EST, 4 hours 32 minutes before

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In the hours before

Local storm report, Feb 14, 9:34 AM EST, 4 hours 58 minutes before

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Local storm report, Feb 14, 11:04 AM EST, 3 hours 28 minutes before

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Local storm report, Feb 14, 11:08 AM EST, 3 hours 24 minutes before

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Local storm report, Feb 14, 12:25 PM EST, 2 hours 7 minutes before

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Local storm report, Feb 14, 12:53 PM EST, 1 hour 39 minutes before

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Local storm report, Feb 14, 12:54 PM EST, 1 hour 38 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
Feb 14, 1:00 AM EST	Small Craft Advisory	LWX		8 hr
Feb 14, 10:00 AM EST	Winter Weather Advisory	LWX	Albemarle, Amherst, Augusta, Clarke, Fauquier, Frederick and 16 more	44 hr

Nearby

Winter Storm Watches in West Virginia, 2021 Winter Storm Watches in Maryland, 2021 Every winter storm watch 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.