Alert archive / Virginia / Wind Chill Watches in 2014

Wind Chill Watch 1, NWS Blacksburg, VA

January 4, 201423 counties in Virginia; Alleghany County, Ashe County, Watauga County, North Carolina; Mercer County, Monroe County, Summers County, West Virginia

NWS Blacksburg, VA issued this wind chill watch at Jan 4, 2014, 7:17 PM EST for 23 counties in Virginia; Alleghany County, Ashe County, Watauga County, North Carolina; Mercer County, Monroe County, Summers County, West Virginia. It took effect at Jan 6, 2014, 7:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Jan 4, 2014, 7:17 PM EST (00:17 UTC)
In effect from: Jan 6, 2014, 7:00 PM EST
Expired: Jan 5, 2014, 4:04 AM EST
In force
Issued by: NWS Blacksburg, VA

All 29 counties

Alleghany County, NC, Ashe County, NC, Watauga County, NC, Alleghany County, VA, Bath County, VA, Bland County, VA, Botetourt County, VA, Carroll County, VA, City of Buena Vista, VA, City of Covington, VA, City of Galax, VA, City of Lexington, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, Craig County, VA, Floyd County, VA, Giles County, VA, Grayson County, VA, Montgomery County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Smyth County, VA, Tazewell County, VA, Wythe County, VA, Mercer County, WV, Monroe County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 32 km from the middle of the area, began a volume at 00:23 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 00:00Z, 0.3 hours before the alert went out and 93 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: 1330 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 263 m²/s²
0-3 km storm-relative helicity: 231 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 watch 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 wind chill watch went out at Jan 4, 4:55 PM EST, 2 hours 22 minutes earlier.

Area forecast discussion, Jan 4, 4:55 PM EST, 2 hours 22 minutes before

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Hazardous weather outlook, Jan 4, 3:58 PM EST, 3 hours 19 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
Jan 5, 4:04 AM EST	Wind Chill Warning	RNK	Alleghany, Bath, Bland, Botetourt, Carroll, Craig and 17 more	66 hr
Jan 5, 4:04 AM EST	Wind Chill Advisory	RNK	Alleghany, Amherst, Appomattox, Bedford, Bland, Botetourt and 30 more	66 hr
Jan 5, 4:04 AM EST	Winter Storm Warning	RNK	Grayson, Smyth, Tazewell	44 hr
Jan 5, 4:23 AM EST	Wind Advisory	RNK	Alleghany, Bath, Bland, Botetourt, Carroll, Craig and 17 more	26 hr

Nearby

Wind Chill Watches in Virginia, 2014 Wind Chill Watches in North Carolina, 2014 Wind Chill Watches in West Virginia, 2014 Every wind chill watch 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.