Alert archive / Virginia / Wind Chill Advisories in 2016

Wind Chill Advisory 5, NWS Baltimore/Washington

December 14, 201615 counties in Virginia; Allegany County, Maryland; Grant County, Mineral County, Pendleton County, West Virginia

NWS Baltimore/Washington issued this wind chill advisory at Dec 14, 2016, 3:09 PM EST for 15 counties in Virginia; Allegany County, Maryland; Grant County, Mineral County, Pendleton County, West Virginia. It took effect at Dec 15, 2016, 12:00 AM EST. It was in force for 32 hr.

The area

The counties it named.

The facts

Issued: Dec 14, 2016, 3:09 PM EST (20:09 UTC)
In effect from: Dec 15, 2016, 12:00 AM EST
Expired: Dec 16, 2016, 8:00 AM EST
In force: 32 hr
Issued by: NWS Baltimore/Washington

Counties Allegany County, MD, Albemarle County, VA, Amherst County, VA, Augusta County, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, Greene County, VA, Highland County, VA, Madison County, VA, Nelson County, VA, Page County, VA, Rappahannock County, VA, Rockbridge County, VA, Rockingham County, VA, Warren County, VA, Grant County, WV, Mineral County, WV, Pendleton County, WV

The radar

The Sterling radar (KLWX), 132 km from the middle of the area, began a volume at 20:12 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, 8.2 hours before the alert went out and 242 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: 951 m above ground
0-6 km bulk shear: 87 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 115 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 Dec 14, 3:09 PM EST, 0 minutes earlier.

Area forecast discussion, Dec 14, 3:09 PM EST, 0 minutes before

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Hazardous weather outlook, Dec 14, 5:52 AM EST, 9 hours 17 minutes before

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In the hours before

Special weather statement, Dec 14, 10:53 AM EST, 4 hours 16 minutes before

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Special weather statement, Dec 14, 11:10 AM EST, 3 hours 59 minutes before

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The office that day

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

Issued	Product	Office	Lasted
Dec 14, 3:49 AM EST	Gale Warning	LWX	38 hr
Dec 14, 3:49 AM EST	Small Craft Advisory	LWX	26 hr
Dec 14, 3:05 PM EST	Small Craft Advisory	LWX	15 hr
Dec 14, 3:05 PM EST	Small Craft Advisory	LWX	42 hr

Nearby

Wind Chill Advisories in Virginia, 2016 Wind Chill Advisories in West Virginia, 2016 Wind Chill Advisories in Maryland, 2016 Every wind chill advisory 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.