Alert archive / West Virginia / Special Weather Statements in 2011

Special Weather Statement, NWS Blacksburg, VA

May 12, 2011Summers County, West Virginia

NWS Blacksburg, VA issued this special weather statement at May 12, 2011, 4:01 AM EDT for Summers County, West Virginia. It was in force for 29 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: May 12, 2011, 4:01 AM EDT (08:01 UTC)
Expired: May 12, 2011, 4:30 AM EDT
In force: 29 min
Issued by: NWS Blacksburg, VA

County Summers County, WV

The radar

The Roanoke radar (KFCX), 91 km from the middle of the area, began a volume at 08:01 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, 8.0 hours before the alert went out and 199 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1003 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 217 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 May 12, 3:28 AM EDT, 33 minutes earlier.

Area forecast discussion, May 12, 3:28 AM EDT, 33 minutes before

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Hazardous weather outlook, May 12, 12:04 AM EDT, 3 hours 57 minutes before

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In the hours before

Special weather statement, May 11, 10:13 PM EDT, 5 hours 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1013 PM EDT WED MAY 11 2011

NCZ018-120245-
WATAUGA NC-
1013 PM EDT WED MAY 11 2011

...A STRONG THUNDERSTORM WILL AFFECT WATAUGA COUNTY...

AT 1009 PM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER DEEP GAP...
MOVING SOUTH AT 15 MPH.

WIND GUSTS TO 40 MPH AND HAIL UP TO DIME SIZE ARE POSSIBLE WITH THIS
STORM.

THIS STORM WILL BE NEAR AHO AROUND 1030 PM.

LAT...LON 3612 8164 3626 8160 3624 8151 3612 8154
      3611 8155 3611 8157

DS

Local storm report, May 12, 12:41 AM EDT, 3 hours 20 minutes before

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Special weather statement, May 12, 4:01 AM 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
May 12, 5:40 AM EDT	Special Weather Statement	RNK	Floyd	35 min
May 12, 1:11 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Botetourt, Rockbridge	46 min
May 12, 2:23 PM EDT	Special Weather Statement	RNK	Alleghany, Botetourt, City of Covington	67 min
May 12, 2:43 PM EDT	Special Weather Statement	RNK	Bedford	62 min
May 12, 3:07 PM EDT	Severe Thunderstorm Warning	RNK	Giles	53 min
May 12, 3:23 PM EDT	Special Weather Statement	RNK	Bedford	67 min
May 12, 3:30 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Giles, Montgomery, Pulaski, City of Radford	60 min
May 12, 3:42 PM EDT	Special Weather Statement	RNK	Pittsylvania, City of Danville	33 min
May 12, 4:13 PM EDT	Severe Thunderstorm Warning	RNK	Craig, Giles, Montgomery, Pulaski	62 min
May 12, 4:38 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Franklin, Montgomery, Patrick, Roanoke	50 min
May 12, 4:40 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Pulaski, Wythe	50 min
May 12, 5:25 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Pulaski, Wythe	65 min
May 12, 5:27 PM EDT	Flash Flood Watch	RNK	Bland, Carroll, Floyd, Franklin, Giles, Grayson and 10 more	5 hr
May 12, 6:01 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Patrick, City of Galax	59 min
May 12, 6:32 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Wythe	58 min
May 12, 6:56 PM EDT	Flash Flood Warning	RNK	Carroll, Wythe	4 hr
May 12, 7:24 PM EDT	Special Weather Statement	RNK	City of Galax	66 min
May 11, 8:42 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe, Watauga, Wilkes	63 min
May 11, 10:13 PM EDT	Special Weather Statement	RNK	Watauga	32 min
May 12, 4:19 PM EDT	Special Weather Statement	RNK	Caswell	56 min
May 12, 7:39 PM EDT	Special Weather Statement	RNK	Wilkes	66 min
May 12, 11:53 AM EDT	Special Weather Statement	RNK	Greenbrier	52 min
May 12, 2:11 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier, Summers	64 min
May 12, 2:35 PM EDT	Special Weather Statement	RNK	Monroe	55 min

Nearby

Special Weather Statements in West 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.