Alert archive / Virginia / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 196, NWS Blacksburg, VA

November 18, 2013Craig County, Giles County, Virginia; Monroe County, West Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Nov 18, 2013, 12:05 AM EST for Craig County, Giles County, Virginia; Monroe County, West Virginia. It was in force for 40 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 18, 2013, 12:05 AM EST (05:05 UTC)
Expired: Nov 18, 2013, 12:45 AM EST
In force: 40 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties Craig County, VA, Giles County, VA, Monroe County, WV

The radar

The Roanoke radar (KFCX), 51 km from the middle of the area, began a volume at 05:07 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, 5.1 hours before the alert went out and 92 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: 521 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 505 m²/s²
0-3 km storm-relative helicity: 622 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 Nov 17, 6:51 PM EST, 5 hours 14 minutes earlier.

Area forecast discussion, Nov 17, 6:51 PM EST, 5 hours 14 minutes before

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Hazardous weather outlook, Nov 17, 4:08 PM EST, 7 hours 57 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 17, 10:47 PM EST	Special Weather Statement	RNK	Tazewell	43 min
Nov 17, 11:28 PM EST	Special Weather Statement	RNK	Tazewell	32 min
Nov 17, 11:49 PM EST	Special Weather Statement	RNK	Bland	26 min
Nov 18, 12:12 AM EST	Special Weather Statement	RNK	Alleghany, Bath, Craig, Giles, City of Covington	33 min
Nov 18, 12:16 AM EST	Special Weather Statement	RNK	Bland, Smyth	29 min
Nov 18, 12:39 AM EST	Special Weather Statement	RNK	Alleghany, Bath, Botetourt, Craig, Montgomery, Roanoke and 6 more	36 min
Nov 18, 12:42 AM EST	Special Weather Statement	RNK	Pulaski, Smyth, Wythe, City of Radford	33 min
Nov 18, 1:14 AM EST	Special Weather Statement	RNK	Bedford, Floyd, Franklin, City of Roanoke	46 min
Nov 18, 1:59 AM EST	Special Weather Statement	RNK	Campbell, Franklin, Henry, Patrick, Pittsylvania, City of Martinsville	46 min
Nov 17, 11:09 PM EST	Special Weather Statement	RNK	Greenbrier, Summers	51 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2013 Severe Thunderstorm Warnings in West 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.