Alert archive / Virginia / Freezing Rain Advisories in 2016

Freezing Rain Advisory 2, NWS Blacksburg, VA

December 17, 201617 counties in Virginia; Greenbrier County, West Virginia

NWS Blacksburg, VA issued this freezing rain advisory at Dec 17, 2016, 9:04 AM EST for 17 counties in Virginia; Greenbrier County, West Virginia. It was in force for 116 min.

The area

The counties it named.

The facts

Issued: Dec 17, 2016, 9:04 AM EST (14:04 UTC)
Expired: Dec 17, 2016, 11:00 AM EST
In force: 116 min
Issued by: NWS Blacksburg, VA

Counties Alleghany County, VA, Amherst County, VA, Appomattox County, VA, Bath County, VA, Bedford County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, City of Buena Vista, VA, City of Covington, VA, City of Lexington, VA, City of Lynchburg, VA, City of Roanoke, VA, City of Salem, VA, Craig County, VA, Roanoke County, VA, Rockbridge County, VA, Greenbrier County, WV

The radar

The Roanoke radar (KFCX), 85 km from the middle of the area, began a volume at 14:03 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, 2.1 hours before the alert went out and 42 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: 724 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 613 m²/s²
0-3 km storm-relative helicity: 761 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 freezing rain advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Blacksburg, VA wrote its last area forecast discussion before this freezing rain advisory went out at Dec 17, 7:53 AM EST, 1 hour 11 minutes earlier.

Area forecast discussion, Dec 17, 7:53 AM EST, 1 hour 11 minutes before

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Hazardous weather outlook, Dec 17, 8:01 AM EST, 1 hour 3 minutes before

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In the hours before

Local storm report, Dec 17, 5:57 AM EST, 3 hours 7 minutes before

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Nearby

Freezing Rain Advisories in Virginia, 2016 Freezing Rain Advisories in West Virginia, 2016 Every freezing rain 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.