Alert archive / Virginia / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

February 29, 2012Tazewell County, Virginia

NWS Blacksburg, VA issued this special weather statement at Feb 29, 2012, 11:26 PM EST for Tazewell County, Virginia. It was in force for 64 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: Feb 29, 2012, 11:26 PM EST (04:26 UTC)
Expired: Mar 1, 2012, 12:30 AM EST
In force: 64 min
Issued by: NWS Blacksburg, VA

County Tazewell County, VA

The radar

The Roanoke radar (KFCX), 115 km from the middle of the area, began a volume at 04:26 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, 4.4 hours before the alert went out and 183 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: 25 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 616 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 281 m²/s²
0-3 km storm-relative helicity: 382 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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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 Feb 29, 9:10 PM EST, 2 hours 16 minutes earlier.

Area forecast discussion, Feb 29, 9:10 PM EST, 2 hours 16 minutes before

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Hazardous weather outlook, Feb 29, 9:46 PM EST, 1 hour 40 minutes before

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In the hours before

Local storm report, Feb 29, 8:25 PM EST, 3 hours 1 minute before

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Local storm report, Feb 29, 8:29 PM EST, 2 hours 57 minutes before

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Local storm report, Feb 29, 8:36 PM EST, 2 hours 50 minutes before

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Local storm report, Feb 29, 8:52 PM EST, 2 hours 34 minutes before

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Special weather statement, Feb 29, 10:50 PM EST, 36 minutes before

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Special weather statement, Feb 29, 11:26 PM EST, 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
Feb 29, 7:01 PM EST	Flash Flood Warning	RNK	Bland, Smyth, Tazewell	6 hr
Feb 29, 7:18 PM EST	Severe Thunderstorm Warning	RNK	Bland, Tazewell	27 min
Feb 29, 7:23 PM EST	Tornado Warning	RNK	Grayson, Smyth, Wythe	37 min
Feb 29, 11:29 PM EST	Tornado Warning	RNK	Tazewell	31 min
Mar 1, 12:26 AM EST	Special Weather Statement	RNK	Bedford	34 min
Mar 1, 12:58 AM EST	Special Weather Statement	RNK	Bedford, Campbell, City of Lynchburg	47 min
Mar 1, 1:10 AM EST	Tornado Warning	RNK	Appomattox, Bedford, Campbell, City of Lynchburg	20 min
Feb 29, 10:50 PM EST	Special Weather Statement	RNK	Greenbrier	40 min

Nearby

Special Weather Statements in Virginia, 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.