Alert archive / Virginia / Special Weather Statements in 2011

Special Weather Statement, NWS Blacksburg, VA

November 29, 20115 counties in Virginia

NWS Blacksburg, VA issued this special weather statement at Nov 29, 2011, 5:20 AM EST for 5 counties in Virginia. It was in force for 70 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: Nov 29, 2011, 5:20 AM EST (10:20 UTC)
Expired: Nov 29, 2011, 6:30 AM EST
In force: 70 min
Issued by: NWS Blacksburg, VA

Counties Appomattox County, VA, Campbell County, VA, Charlotte County, VA, City of Lynchburg, VA, Halifax County, VA

The radar

The Roanoke radar (KFCX), 132 km from the middle of the area, began a volume at 10:21 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 00:00Z, 10.3 hours before the alert went out and 153 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: 27 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 551 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 268 m²/s²
0-3 km storm-relative helicity: 353 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 Nov 29, 4:52 AM EST, 28 minutes earlier.

Area forecast discussion, Nov 29, 4:52 AM EST, 28 minutes before

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Hazardous weather outlook, Nov 29, 4:12 AM EST, 1 hour 8 minutes before

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In the hours before

Special weather statement, Nov 29, 12:50 AM EST, 4 hours 30 minutes before

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Local storm report, Nov 29, 1:53 AM EST, 3 hours 27 minutes before

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Special weather statement, Nov 29, 2:18 AM EST, 3 hours 2 minutes before

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Special weather statement, Nov 29, 3:11 AM EST, 2 hours 9 minutes before

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Special weather statement, Nov 29, 4:05 AM EST, 1 hour 15 minutes before

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Special weather statement, Nov 29, 5:20 AM 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
Nov 28, 9:10 PM EST	Special Weather Statement	RNK	Smyth, Tazewell	50 min
Nov 28, 9:42 PM EST	Special Weather Statement	RNK	Alleghany, Bath, Bedford, Bland, Botetourt, Craig and 14 more	63 min
Nov 28, 10:12 PM EST	Special Weather Statement	RNK	Smyth, Tazewell	78 min
Nov 28, 10:53 PM EST	Special Weather Statement	RNK	Floyd, Franklin, Montgomery, Pulaski, Roanoke, City of Radford and 2 more	67 min
Nov 28, 11:41 PM EST	Special Weather Statement	RNK	Floyd, Franklin, Henry, Montgomery, Patrick, Roanoke and 4 more	79 min
Nov 29, 12:50 AM EST	Special Weather Statement	RNK	Floyd, Franklin, Henry, Patrick, City of Martinsville, City of Roanoke	70 min
Nov 29, 1:18 AM EST	Flash Flood Warning	RNK	Floyd, Franklin, Patrick, Roanoke	6 hr
Nov 29, 2:18 AM EST	Special Weather Statement	RNK	Bedford, Botetourt, Campbell, Craig, Franklin, Montgomery and 4 more	72 min
Nov 29, 3:11 AM EST	Special Weather Statement	RNK	Alleghany, Bedford, Botetourt, Campbell, Craig, Pittsylvania and 5 more	64 min
Nov 29, 3:27 AM EST	Areal Flood Warning	RNK	Alleghany, Bath, Botetourt, Craig, Roanoke, City of Covington	4 hr
Nov 29, 4:43 AM EST	Areal Flood Warning	RNK	Montgomery, Roanoke, City of Roanoke, City of Salem	4 hr
Nov 29, 5:16 AM EST	Areal Flood Warning	RNK	Grayson	4 hr
Nov 29, 5:36 AM EST	Areal Flood Warning	RNK	Amherst, Appomattox, Buckingham, Campbell, Charlotte, Halifax and 4 more	6 hr
Nov 29, 7:12 AM EST	Areal Flood Warning	RNK	Floyd, Franklin, Patrick, Roanoke	6 hr
Nov 29, 7:26 AM EST	Areal Flood Warning	RNK	Alleghany, Bath, Botetourt, Craig, Roanoke, City of Covington	4 hr
Nov 29, 11:00 AM EST	Winter Weather Advisory	RNK	Grayson	19 hr
Nov 28, 10:33 PM EST	Special Weather Statement	RNK	Stokes, Yadkin	72 min
Nov 29, 4:05 AM EST	Special Weather Statement	RNK	Greenbrier	70 min

Nearby

Special Weather Statements in Virginia, 2011 Every special weather statement in 2011

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.