Alert archive / North Carolina / Special Weather Statements in 2018

Special Weather Statement, NWS Blacksburg, VA

August 12, 2018Alleghany County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Aug 12, 2018, 4:00 PM EDT for Alleghany County, North Carolina. It was in force for 45 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 12, 2018, 4:00 PM EDT (20:00 UTC)
Expired: Aug 12, 2018, 4:45 PM EDT
In force: 45 min
Issued by: NWS Blacksburg, VA

County Alleghany County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.0 hours before the alert went out and 113 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: 445 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1179 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 11 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

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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 12, 3:17 PM EDT, 43 minutes earlier.

Area forecast discussion, Aug 12, 3:17 PM EDT, 43 minutes before

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Hazardous weather outlook, Aug 12, 3:39 PM EDT, 21 minutes before

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In the hours before

Special weather statement, Aug 12, 3:24 PM EDT, 36 minutes before

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Special weather statement, Aug 12, 3:40 PM EDT, 20 minutes before

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Special weather statement, Aug 12, 3:48 PM EDT, 12 minutes before

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Special weather statement, Aug 12, 3:53 PM EDT, 7 minutes before

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Local storm report, Aug 12, 3:58 PM EDT, 2 minutes before

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Special weather statement, Aug 12, 4:00 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
Aug 11, 8:00 PM EDT	Special Weather Statement	RNK	City of Martinsville	30 min
Aug 11, 10:32 PM EDT	Special Weather Statement	RNK	Bath	58 min
Aug 12, 4:51 AM EDT	Special Weather Statement	RNK	Grayson	54 min
Aug 12, 11:59 AM EDT	Special Weather Statement	RNK	Tazewell	46 min
Aug 12, 12:10 PM EDT	Special Weather Statement	RNK	Franklin	50 min
Aug 12, 12:52 PM EDT	Areal Flood Advisory	RNK	Franklin, Patrick	5 hr
Aug 12, 12:55 PM EDT	Special Weather Statement	RNK	Pulaski	35 min
Aug 12, 1:04 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery, Pulaski, City of Radford	41 min
Aug 12, 1:28 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery, City of Radford	51 min
Aug 12, 1:38 PM EDT	Severe Thunderstorm Warning	RNK	Pulaski	41 min
Aug 12, 1:42 PM EDT	Areal Flood Advisory	RNK	Pittsylvania	4 hr
Aug 12, 1:47 PM EDT	Special Weather Statement	RNK	Campbell	43 min
Aug 12, 1:56 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Campbell, Charlotte, Halifax, Pittsylvania	79 min
Aug 12, 2:01 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	59 min
Aug 12, 2:04 PM EDT	Special Weather Statement	RNK	Pittsylvania, City of Martinsville	41 min
Aug 12, 2:06 PM EDT	Severe Thunderstorm Warning	RNK	Franklin, Henry, Pittsylvania	54 min
Aug 12, 2:07 PM EDT	Severe Thunderstorm Warning	RNK	Franklin, Roanoke, City of Roanoke, City of Salem	24 min
Aug 12, 2:11 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Botetourt, City of Covington	64 min
Aug 12, 2:12 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Campbell, City of Lynchburg	63 min
Aug 12, 2:18 PM EDT	Flash Flood Warning	RNK	Patrick	4 hr
Aug 12, 2:37 PM EDT	Special Weather Statement	RNK	Carroll, City of Galax	38 min
Aug 12, 2:47 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Pittsylvania, City of Martinsville	58 min
Aug 12, 2:49 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, City of Galax	27 min
Aug 12, 2:59 PM EDT	Areal Flood Advisory	RNK	Appomattox, Campbell, Charlotte, Halifax, Pittsylvania	4 hr
Aug 12, 3:06 PM EDT	Special Weather Statement	RNK	Halifax	24 min
Aug 12, 3:09 PM EDT	Special Weather Statement	RNK	Charlotte, Halifax	36 min
Aug 12, 3:38 PM EDT	Areal Flood Advisory	RNK	City of Martinsville	3 hr
Aug 12, 3:40 PM EDT	Special Weather Statement	RNK	Cumberland	35 min
Aug 12, 3:48 PM EDT	Special Weather Statement	RNK	City of Martinsville	27 min
Aug 12, 3:53 PM EDT	Special Weather Statement	RNK	Amherst	22 min
Aug 12, 4:13 PM EDT	Special Weather Statement	RNK	Giles	47 min
Aug 12, 4:44 PM EDT	Special Weather Statement	RNK	City of Danville	31 min
Aug 12, 4:59 PM EDT	Special Weather Statement	RNK	Montgomery	31 min
Aug 12, 5:19 PM EDT	Special Weather Statement	RNK	Pulaski	26 min
Aug 12, 5:31 PM EDT	Special Weather Statement	RNK	Roanoke, City of Salem	29 min
Aug 12, 5:53 PM EDT	Special Weather Statement	RNK	Pulaski	37 min
Aug 12, 6:28 PM EDT	Special Weather Statement	RNK	Wythe	32 min
Aug 12, 6:30 PM EDT	Special Weather Statement	RNK	Tazewell	30 min
Aug 12, 7:16 PM EDT	Special Weather Statement	RNK	Smyth	29 min
Aug 12, 7:31 PM EDT	Special Weather Statement	RNK	Alleghany	29 min
Aug 12, 7:59 PM EDT	Special Weather Statement	RNK	Smyth	31 min
Aug 12, 1:51 PM EDT	Severe Thunderstorm Warning	RNK	Wilkes	54 min
Aug 12, 2:59 PM EDT	Special Weather Statement	RNK	Yadkin	31 min
Aug 12, 3:15 PM EDT	Special Weather Statement	RNK	Ashe	45 min
Aug 12, 4:03 PM EDT	Special Weather Statement	RNK	Rockingham	27 min
Aug 12, 4:17 PM EDT	Special Weather Statement	RNK	Rockingham	28 min
Aug 12, 4:38 PM EDT	Special Weather Statement	RNK	Surry	37 min
Aug 12, 4:40 PM EDT	Special Weather Statement	RNK	Caswell	35 min
Aug 12, 5:16 PM EDT	Special Weather Statement	RNK	Person	29 min
Aug 12, 5:17 PM EDT	Areal Flood Advisory	RNK	Surry	114 min
Aug 12, 5:17 PM EDT	Special Weather Statement	RNK	Rockingham	28 min
Aug 12, 5:43 PM EDT	Areal Flood Advisory	RNK	Rockingham	101 min
Aug 12, 6:05 PM EDT	Special Weather Statement	RNK	Caswell	25 min
Aug 12, 3:24 PM EDT	Special Weather Statement	RNK	Mercer	51 min
Aug 12, 5:23 PM EDT	Special Weather Statement	RNK	Mercer	37 min
Aug 12, 5:52 PM EDT	Special Weather Statement	RNK	Greenbrier	23 min
Aug 12, 5:57 PM EDT	Special Weather Statement	RNK	Greenbrier	33 min
Aug 12, 5:59 PM EDT	Special Weather Statement	RNK	Summers	31 min
Aug 12, 6:32 PM EDT	Special Weather Statement	RNK	Greenbrier	28 min
Aug 12, 7:01 PM EDT	Special Weather Statement	RNK	Greenbrier	29 min

Nearby

Special Weather Statements in North Carolina, 2018 Every special weather statement in 2018

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.