Alert archive / Virginia / Freeze Warnings in 2014

Freeze Warning 6, NWS Blacksburg, VA

November 2, 201421 counties in Virginia; 6 counties in North Carolina

NWS Blacksburg, VA issued this freeze warning at Nov 2, 2014, 2:41 AM EST for 21 counties in Virginia; 6 counties in North Carolina. It took effect at Nov 3, 2014, 1:00 AM EST. It was in force for 8 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: Nov 2, 2014, 2:41 AM EST (07:41 UTC)
In effect from: Nov 3, 2014, 1:00 AM EST
Expired: Nov 3, 2014, 9:00 AM EST
In force: 8 hr
Issued by: NWS Blacksburg, VA

All 27 counties

Caswell County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Wilkes County, NC, Yadkin County, NC, Amherst County, VA, Appomattox County, VA, Bedford County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Charlotte County, VA, City of Buena Vista, VA, City of Danville, VA, City of Lexington, VA, City of Lynchburg, VA, City of Martinsville, VA, City of Roanoke, VA, City of Salem, VA, Franklin County, VA, Halifax County, VA, Henry County, VA, Patrick County, VA, Pittsylvania County, VA, Roanoke County, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 55 km from the middle of the area, began a volume at 07:38 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 7.7 hours before the alert went out and 106 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: 1212 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 206 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 freeze warning 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 freeze warning went out at Nov 1, 7:41 PM EDT, 8 hours earlier.

Area forecast discussion, Nov 1, 7:41 PM EDT, 8 hours before

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Hazardous weather outlook, Nov 1, 4:36 PM EDT, 11 hours 5 minutes before

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Nearby

Freeze Warnings in Virginia, 2014 Freeze Warnings in North Carolina, 2014 Every freeze warning in 2014

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.