Alert archive / Virginia / Freeze Warnings in 2014

Freeze Warning 5, NWS Blacksburg, VA

November 1, 201411 counties in Virginia; 4 counties in North Carolina

NWS Blacksburg, VA issued this freeze warning at Nov 1, 2014, 7:56 PM EDT for 11 counties in Virginia; 4 counties in North Carolina. It took effect at Nov 2, 2014, 12:00 AM EDT. It was in force for 4 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 1, 2014, 7:56 PM EDT (23:56 UTC)
In effect from: Nov 2, 2014, 12:00 AM EDT
Expired: Nov 2, 2014, 2:41 AM EST
In force: 4 hr
Issued by: NWS Blacksburg, VA

Counties Stokes County, NC, Surry County, NC, Wilkes County, NC, Yadkin County, NC, Amherst County, VA, Bedford County, VA, Botetourt County, VA, City of Buena Vista, VA, City of Lexington, VA, City of Roanoke, VA, City of Salem, VA, Franklin County, VA, Patrick County, VA, Roanoke County, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 27 km from the middle of the area, began a volume at 23:50 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 12:00Z, 11.9 hours before the alert went out and 113 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: 535 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: 107 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, 15 minutes earlier.

Area forecast discussion, Nov 1, 7:41 PM EDT, 15 minutes before

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Hazardous weather outlook, Nov 1, 4:36 PM EDT, 3 hours 20 minutes before

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In the hours before

Local storm report, Nov 1, 2:08 PM EDT, 5 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
208 PM EDT SAT NOV 01 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1230 PM     SNOW             MARION                  36.83N  81.50W
11/01/2014  M2.2 INCH        SMYTH              VA   TRAINED SPOTTER

&&

EVENT NUMBER RNK1402127

AMS

Local storm report, Nov 1, 4:41 PM EDT, 3 hours 15 minutes before

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Local storm report, Nov 1, 5:32 PM EDT, 2 hours 24 minutes before

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The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 1, 7:25 AM EDT	Winter Weather Advisory	RNK	Bland, Carroll, Wythe, City of Galax	5 hr
Nov 1, 4:01 PM EDT	Wind Advisory	RNK	Carroll, Floyd, Grayson, Patrick, City of Galax	16 hr

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.