Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

July 8, 2012Alleghany County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Jul 8, 2012, 9:11 PM EDT for Alleghany County, North Carolina. It was in force for 34 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: Jul 8, 2012, 9:11 PM EDT (01:11 UTC)
Expired: Jul 8, 2012, 9:45 PM EDT
In force: 34 min
Issued by: NWS Blacksburg, VA

County Alleghany County, NC

The radar

The Roanoke radar (KFCX), 90 km from the middle of the area, began a volume at 01:14 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, 1.2 hours before the alert went out and 114 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: 319 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 2385 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: 15 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 Jul 8, 8:51 PM EDT, 20 minutes earlier.

Area forecast discussion, Jul 8, 8:51 PM EDT, 20 minutes before

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Hazardous weather outlook, Jul 8, 8:52 PM EDT, 19 minutes before

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In the hours before

Special weather statement, Jul 8, 8:15 PM EDT, 56 minutes before

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Local storm report, Jul 8, 8:21 PM EDT, 50 minutes before

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Local storm report, Jul 8, 8:25 PM EDT, 46 minutes before

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Local storm report, Jul 8, 8:55 PM EDT, 16 minutes before

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Special weather statement, Jul 8, 8:58 PM EDT, 13 minutes before

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Special weather statement, Jul 8, 9:11 PM 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
Jul 8, 8:15 PM EDT	Special Weather Statement	RNK	Amherst, Bedford	60 min
Jul 8, 8:58 PM EDT	Special Weather Statement	RNK	Campbell	62 min
Jul 8, 9:20 PM EDT	Special Weather Statement	RNK	Bedford	40 min
Jul 8, 9:32 PM EDT	Areal Flood Advisory	RNK	Appomattox, Campbell	3 hr
Jul 8, 9:46 PM EDT	Special Weather Statement	RNK	Appomattox, Charlotte	59 min
Jul 8, 9:55 PM EDT	Special Weather Statement	RNK	Patrick	65 min
Jul 8, 11:05 PM EDT	Special Weather Statement	RNK	Charlotte, Halifax, City of Danville	55 min
Jul 8, 11:08 PM EDT	Special Weather Statement	RNK	City of Martinsville	67 min
Jul 8, 11:17 PM EDT	Special Weather Statement	RNK	Grayson	58 min
Jul 9, 12:16 AM EDT	Special Weather Statement	RNK	Grayson	29 min
Jul 9, 12:17 AM EDT	Special Weather Statement	RNK	City of Danville	28 min
Jul 9, 12:23 AM EDT	Areal Flood Advisory	RNK	City of Danville	106 min
Jul 9, 12:48 AM EDT	Special Weather Statement	RNK	City of Danville	27 min
Jul 9, 12:49 AM EDT	Special Weather Statement	RNK	Patrick	26 min
Jul 9, 1:03 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	27 min
Jul 9, 1:21 PM EDT	Special Weather Statement	RNK	Giles	24 min
Jul 9, 1:41 PM EDT	Special Weather Statement	RNK	Alleghany	34 min
Jul 9, 2:12 PM EDT	Special Weather Statement	RNK	Alleghany, Botetourt, City of Covington	33 min
Jul 9, 2:30 PM EDT	Special Weather Statement	RNK	Amherst, Rockbridge, City of Buena Vista, City of Lexington	60 min
Jul 9, 3:25 PM EDT	Special Weather Statement	RNK	Bedford, Botetourt, City of Lynchburg	65 min
Jul 9, 3:45 PM EDT	Special Weather Statement	RNK	Appomattox, Campbell	60 min
Jul 9, 4:13 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Campbell, Charlotte	62 min
Jul 9, 4:49 PM EDT	Special Weather Statement	RNK	Campbell	56 min
Jul 9, 4:51 PM EDT	Special Weather Statement	RNK	City of Martinsville	54 min
Jul 9, 4:59 PM EDT	Special Weather Statement	RNK	Franklin	61 min
Jul 9, 5:08 PM EDT	Special Weather Statement	RNK	Roanoke	67 min
Jul 9, 6:07 PM EDT	Special Weather Statement	RNK	Franklin	53 min
Jul 9, 6:24 PM EDT	Special Weather Statement	RNK	Floyd	51 min
Jul 9, 7:17 PM EDT	Special Weather Statement	RNK	Henry, Patrick, City of Martinsville	58 min
Jul 8, 9:31 PM EDT	Special Weather Statement	RNK	Watauga	44 min
Jul 9, 12:19 AM EDT	Special Weather Statement	RNK	Wilkes	26 min
Jul 9, 12:20 AM EDT	Special Weather Statement	RNK	Surry	25 min
Jul 9, 12:46 AM EDT	Special Weather Statement	RNK	Wilkes	29 min
Jul 9, 12:47 AM EDT	Special Weather Statement	RNK	Surry	58 min
Jul 9, 1:14 AM EDT	Special Weather Statement	RNK	Yadkin	31 min
Jul 9, 1:15 AM EDT	Special Weather Statement	RNK	Surry	30 min
Jul 9, 4:55 PM EDT	Special Weather Statement	RNK	Yadkin	65 min
Jul 9, 5:49 PM EDT	Special Weather Statement	RNK	Caswell	56 min
Jul 9, 6:29 PM EDT	Severe Thunderstorm Warning	RNK	Caswell	61 min
Jul 9, 7:14 PM EDT	Areal Flood Advisory	RNK	Caswell	106 min

Nearby

Special Weather Statements in North Carolina, 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.