Alert archive / Virginia / Special Weather Statements in 2010

Special Weather Statement, NWS Blacksburg, VA

August 4, 2010Smyth County, Tazewell County, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 4, 2010, 6:16 AM EDT for Smyth County, Tazewell County, Virginia. It was in force for 44 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: Aug 4, 2010, 6:16 AM EDT (10:16 UTC)
Expired: Aug 4, 2010, 7:00 AM EDT
In force: 44 min
Issued by: NWS Blacksburg, VA

Counties Smyth County, VA, Tazewell County, VA

The radar

The Roanoke radar (KFCX), 123 km from the middle of the area, began a volume at 10:18 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 10.3 hours before the alert went out and 321 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: 175 J/kg
Mixed-layer CIN: -203 J/kg
Mixed-layer LCL: 1411 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 159 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 4, 3:46 AM EDT, 2 hours 30 minutes earlier.

Area forecast discussion, Aug 4, 3:46 AM EDT, 2 hours 30 minutes before

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Hazardous weather outlook, Aug 4, 4:29 AM EDT, 1 hour 47 minutes before

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In the hours before

Special weather statement, Aug 4, 6:16 AM EDT, 0 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
Aug 4, 6:58 AM EDT	Special Weather Statement	RNK	Smyth, Wythe	47 min
Aug 4, 8:12 AM EDT	Special Weather Statement	RNK	Alleghany, Craig, City of Covington	63 min
Aug 4, 9:35 AM EDT	Special Weather Statement	RNK	Bland	55 min
Aug 4, 5:13 PM EDT	Special Weather Statement	RNK	Bland, Wythe	62 min
Aug 4, 6:26 PM EDT	Special Weather Statement	RNK	City of Martinsville	64 min
Aug 4, 6:31 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Montgomery, Pulaski	34 min
Aug 4, 7:13 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Botetourt, Craig, Giles, Rockbridge and 1 more	62 min
Aug 4, 7:35 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Giles, Smyth, Tazewell, Wythe	85 min
Aug 4, 7:58 PM EDT	Severe Thunderstorm Warning	RNK	Botetourt, Craig, Franklin, Roanoke, City of Roanoke, City of Salem	62 min
Aug 4, 7:52 AM EDT	Special Weather Statement	RNK	Alleghany	38 min
Aug 4, 8:22 AM EDT	Special Weather Statement	RNK	Ashe	53 min
Aug 4, 9:30 AM EDT	Special Weather Statement	RNK	Surry, Yadkin	60 min
Aug 4, 4:10 PM EDT	Severe Thunderstorm Warning	RNK	Watauga	31 min
Aug 4, 4:14 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Surry	43 min
Aug 4, 6:47 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe, Wilkes	33 min
Aug 4, 6:50 AM EDT	Special Weather Statement	RNK	Greenbrier	40 min
Aug 4, 6:12 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier, Monroe, Summers	63 min

Nearby

Special Weather Statements in Virginia, 2010 Every special weather statement in 2010

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.