Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

January 11, 2012Alleghany County, Ashe County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Jan 11, 2012, 6:35 PM EST for Alleghany County, Ashe County, North Carolina. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jan 11, 2012, 6:35 PM EST (23:35 UTC)
Expired: Jan 11, 2012, 7:30 PM EST
In force: 55 min
Issued by: NWS Blacksburg, VA

Counties Alleghany County, NC, Ashe County, NC

The radar

The Roanoke radar (KFCX), 114 km from the middle of the area, began a volume at 23:37 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, 11.6 hours before the alert went out and 139 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: 641 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 11, 4:39 AM EST	Winter Weather Advisory	RNK	Alleghany, Bath, Rockbridge, City of Buena Vista, City of Covington, City of Lexington	5 hr
Jan 11, 11:12 AM EST	Wind Advisory	RNK	Bland, Carroll, Grayson, Smyth, Tazewell, Wythe and 1 more	7 hr
Jan 11, 6:28 PM EST	Special Weather Statement	RNK	Pittsylvania	62 min
Jan 11, 6:38 PM EST	Special Weather Statement	RNK	Wilkes	52 min

Nearby

Special Weather Statements in North Carolina, 2012 Every special weather statement in 2012

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.