Alert archive / Virginia / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 195, NWS Blacksburg, VA

November 1, 2013Bland County, Smyth County, Tazewell County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Nov 1, 2013, 5:06 AM EDT for Bland County, Smyth County, Tazewell County, Virginia. It was in force for 54 min. 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, 2013, 5:06 AM EDT (09:06 UTC)
Expired: Nov 1, 2013, 6:00 AM EDT
In force: 54 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties Bland County, VA, Smyth County, VA, Tazewell County, VA

The radar

The Roanoke radar (KFCX), 101 km from the middle of the area, began a volume at 09:07 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, 9.1 hours before the alert went out and 170 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: 3 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 728 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 279 m²/s²
0-3 km storm-relative helicity: 346 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 severe thunderstorm 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 severe thunderstorm warning went out at Oct 31, 7:07 PM EDT, 9 hours 59 minutes earlier.

Area forecast discussion, Oct 31, 7:07 PM EDT, 9 hours 59 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, 1:06 AM EDT	Special Weather Statement	RNK	Amherst, Bedford, Botetourt, Rockbridge, City of Buena Vista, City of Lexington	54 min
Nov 1, 1:58 AM EDT	Special Weather Statement	RNK	Amherst, Appomattox, Bedford, Buckingham, Campbell, Rockbridge and 3 more	62 min
Nov 1, 3:31 AM EDT	Special Weather Statement	RNK	Tazewell	59 min
Nov 1, 4:12 AM EDT	Special Weather Statement	RNK	Bland, Smyth, Wythe	63 min
Nov 1, 5:56 AM EDT	Special Weather Statement	RNK	Bland, Tazewell	49 min
Nov 1, 6:13 AM EDT	Special Weather Statement	RNK	Giles	47 min
Nov 1, 6:22 AM EDT	Special Weather Statement	RNK	Bath	23 min
Nov 1, 6:36 AM EDT	Special Weather Statement	RNK	Alleghany, Bath, Craig, City of Covington	39 min
Nov 1, 7:15 AM EDT	Special Weather Statement	RNK	Amherst, Botetourt, Montgomery, Pulaski, Roanoke, Rockbridge and 5 more	60 min
Nov 1, 8:40 AM EDT	Special Weather Statement	RNK	Floyd, Franklin	65 min
Nov 1, 3:01 AM EDT	Special Weather Statement	RNK	Greenbrier	59 min
Nov 1, 4:09 AM EDT	Special Weather Statement	RNK	Greenbrier	96 min
Nov 1, 4:40 AM EDT	Severe Thunderstorm Warning	RNK	Greenbrier, Summers	80 min
Nov 1, 5:42 AM EDT	Special Weather Statement	RNK	Mercer, Summers	48 min
Nov 1, 6:03 AM EDT	Special Weather Statement	RNK	Greenbrier	42 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2013 Every severe thunderstorm warning in 2013

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.