Alert archive / Virginia / Winter Storm Warnings in 2008

Winter Storm Warning 1, NWS Blacksburg, VA

January 1, 2008Grayson County, Tazewell County, Virginia; Ashe County, Watauga County, North Carolina; Mercer County, Summers County, West Virginia

NWS Blacksburg, VA issued this winter storm warning at Jan 1, 2008, 4:35 AM EST for Grayson County, Tazewell County, Virginia; Ashe County, Watauga County, North Carolina; Mercer County, Summers County, West Virginia. It took effect at Jan 1, 2008, 4:00 PM EST. It was in force for 42 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: Jan 1, 2008, 4:35 AM EST (09:35 UTC)
In effect from: Jan 1, 2008, 4:00 PM EST
Expired: Jan 3, 2008, 10:00 AM EST
In force: 42 hr
Issued by: NWS Blacksburg, VA

Counties Ashe County, NC, Watauga County, NC, Grayson County, VA, Tazewell County, VA, Mercer County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 94 km from the middle of the area, began a volume at 09:41 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, 9.6 hours before the alert went out and 158 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: 1644 m above ground
0-6 km bulk shear: 80 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 285 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 winter storm 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 winter storm warning went out at Jan 1, 3:34 AM EST, 1 hour 1 minute earlier.

Area forecast discussion, Jan 1, 3:34 AM EST, 1 hour 1 minute before

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Hazardous weather outlook, Jan 1, 3:58 AM EST, 37 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 1, 4:35 AM EST	Snow and Blowing Snow Advisory	RNK	Alleghany, Bath, Bland, Craig, Giles, Smyth and 2 more	36 hr
Jan 1, 2:40 PM EST	Fire Weather Watch	RNK	Caswell, Rockingham, Stokes, Yadkin	18 hr

Nearby

Winter Storm Warnings in Virginia, 2008 Winter Storm Warnings in North Carolina, 2008 Winter Storm Warnings in West Virginia, 2008 Every winter storm warning in 2008

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.