Alert archive / West Virginia / Wind Chill Advisories in 2011

Wind Chill Advisory 2, NWS Baltimore/Washington

January 12, 2011Highland County, Virginia; Allegany County, Maryland; Grant County, Mineral County, Pendleton County, West Virginia

NWS Baltimore/Washington issued this wind chill advisory at Jan 12, 2011, 2:45 PM EST for Highland County, Virginia; Allegany County, Maryland; Grant County, Mineral County, Pendleton County, West Virginia. It took effect at Jan 12, 2011, 7:00 PM EST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Jan 12, 2011, 2:45 PM EST (19:45 UTC)
In effect from: Jan 12, 2011, 7:00 PM EST
Expired: Jan 13, 2011, 10:00 AM EST
In force: 15 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 19:48 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, 7.8 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: 649 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 175 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 wind chill advisory 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 wind chill advisory went out at Jan 11, 6:38 PM EST, 20 hours 7 minutes earlier.

Area forecast discussion, Jan 11, 6:38 PM EST, 20 hours 7 minutes before

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Hazardous weather outlook, Jan 11, 5:37 PM EST, 21 hours 8 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 12, 12:31 AM EST	Winter Storm Warning	LWX	Highland	28 hr

Nearby

Wind Chill Advisories in West Virginia, 2011 Wind Chill Advisories in Virginia, 2011 Wind Chill Advisories in Maryland, 2011 Every wind chill advisory in 2011

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.