Alert archive / Maryland / Ice Storm Warnings in 2016

Ice Storm Warning 1, NWS Baltimore/Washington

December 6, 2016Allegany County, Maryland; Mineral County, West Virginia

NWS Baltimore/Washington issued this ice storm warning at Dec 6, 2016, 3:25 PM EST for Allegany County, Maryland; Mineral County, West Virginia. It was in force for 5 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 6, 2016, 3:25 PM EST (20:25 UTC)
Expired: Dec 6, 2016, 8:53 PM EST
In force: 5 hr
Issued by: NWS Baltimore/Washington

Counties Allegany County, MD, Mineral County, WV

The radar

The Sterling radar (KLWX), 130 km from the middle of the area, began a volume at 20:24 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 12:00Z, 8.4 hours before the alert went out and 147 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: 1186 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 269 m²/s²
0-3 km storm-relative helicity: 334 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 ice 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 ice storm warning went out at Dec 6, 3:00 PM EST, 25 minutes earlier.

Area forecast discussion, Dec 6, 3:00 PM EST, 25 minutes before

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Hazardous weather outlook, Dec 6, 5:12 AM EST, 10 hours 13 minutes before

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In the hours before

Local storm report, Dec 6, 1:16 PM EST, 2 hours 9 minutes before

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Local storm report, Dec 6, 1:24 PM EST, 2 hours 1 minute before

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Local storm report, Dec 6, 1:39 PM EST, 1 hour 46 minutes before

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Local storm report, Dec 6, 2:51 PM EST, 34 minutes before

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Local storm report, Dec 6, 3:01 PM EST, 24 minutes before

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Local storm report, Dec 6, 3:09 PM EST, 16 minutes before

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Nearby

Ice Storm Warnings in Maryland, 2016 Ice Storm Warnings in West Virginia, 2016 Every ice 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.