Alert archive / Virginia / Special Weather Statements in 2011

Special Weather Statement, NWS Blacksburg, VA

November 23, 2011Buckingham County, Virginia

NWS Blacksburg, VA issued this special weather statement at Nov 23, 2011, 2:28 AM EST for Buckingham County, Virginia. It was in force for 32 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 23, 2011, 2:28 AM EST (07:28 UTC)
Expired: Nov 23, 2011, 3:00 AM EST
In force: 32 min
Issued by: NWS Blacksburg, VA

County Buckingham County, VA

The radar

The Norfolk radar (KAKQ), 140 km from the middle of the area, began a volume at 07:29 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 7.5 hours before the alert went out and 169 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: 440 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 395 m²/s²
0-3 km storm-relative helicity: 458 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 23, 12:10 AM EST, 2 hours 18 minutes earlier.

Area forecast discussion, Nov 23, 12:10 AM EST, 2 hours 18 minutes before

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Hazardous weather outlook, Nov 22, 11:04 PM EST, 3 hours 24 minutes before

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In the hours before

Special weather statement, Nov 22, 10:48 PM EST, 3 hours 40 minutes before

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Special weather statement, Nov 22, 11:54 PM EST, 2 hours 34 minutes before

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Special weather statement, Nov 23, 12:27 AM EST, 2 hours 1 minute before

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Special weather statement, Nov 23, 1:39 AM EST, 49 minutes before

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Special weather statement, Nov 23, 2:28 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 22, 8:21 PM EST	Special Weather Statement	RNK	Grayson, Smyth, Wythe, City of Galax	54 min
Nov 22, 10:48 PM EST	Special Weather Statement	RNK	Alleghany, Bath, Craig, City of Covington	42 min
Nov 23, 12:27 AM EST	Special Weather Statement	RNK	Botetourt	33 min
Nov 23, 1:39 AM EST	Special Weather Statement	RNK	Appomattox, Campbell	36 min
Nov 23, 3:08 AM EST	Special Weather Statement	RNK	Charlotte	52 min
Nov 23, 3:17 AM EST	High Wind Warning	RNK	Alleghany, Amherst, Bath, Bedford, Botetourt, Carroll and 12 more	12 hr
Nov 23, 3:17 AM EST	Wind Advisory	RNK	Alleghany, Amherst, Bath, Bedford, Bland, Botetourt and 21 more	19 hr
Nov 22, 11:54 PM EST	Special Weather Statement	RNK	Surry	36 min
Nov 22, 11:59 PM EST	Tornado Warning	RNK	Surry	18 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.