Alert archive / Virginia / Special Weather Statements in 2011

Special Weather Statement, NWS Blacksburg, VA

August 25, 2011Carroll County, City of Galax, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 25, 2011, 10:47 PM EDT for Carroll County, City of Galax, Virginia. It was in force for 58 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 25, 2011, 10:47 PM EDT (02:47 UTC)
Expired: Aug 25, 2011, 11:45 PM EDT
In force: 58 min
Issued by: NWS Blacksburg, VA

Counties Carroll County, VA, City of Galax, VA

The radar

The Roanoke radar (KFCX), 69 km from the middle of the area, began a volume at 02:48 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, 2.8 hours before the alert went out and 399 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: 1032 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 823 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.5

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 Aug 25, 10:15 PM EDT, 32 minutes earlier.

Area forecast discussion, Aug 25, 10:15 PM EDT, 32 minutes before

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Hazardous weather outlook, Aug 25, 7:38 AM EDT, 15 hours 9 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE BLACKSBURG VA
738 AM EDT THU AUG 25 2011

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>045-261145-
ASHE-ALLEGHANY NC-SURRY-STOKES-ROCKINGHAM-CASWELL-WATAUGA-WILKES-
YADKIN-TAZEWELL-SMYTH-BLAND-GILES-WYTHE-PULASKI-MONTGOMERY-GRAYSON-
CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH-ROANOKE-BOTETOURT-ROCKBRIDGE-
PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY-PITTSYLVANIA-CAMPBELL-
APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE-MERCER-SUMMERS-MONROE-
GREENBRIER-
738 AM EDT THU AUG 25 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH
CAROLINA...NORTHWEST NORTH CAROLINA...CENTRAL VIRGINIA...SOUTH
CENTRAL VIRGINIA...SOUTHWEST VIRGINIA...WEST CENTRAL VIRGINIA AND
SOUTHEAST WEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT.

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP AHEAD OF A COLD
FRONT APPROACHING FROM THE NORTHWEST THIS AFTERNOON. SCATTERED
STRONG TO SEVERE STORMS PRODUCING DAMAGING WINDS AND HAIL WILL BE
POSSIBLE INTO THIS EVENING. LOCALLY VERY HEAVY RAINFALL MAY ALSO
OCCUR.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 25, 8:46 PM EDT, 2 hours 1 minute before

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Special weather statement, Aug 25, 8:58 PM EDT, 1 hour 49 minutes before

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Special weather statement, Aug 25, 9:11 PM EDT, 1 hour 36 minutes before

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Local storm report, Aug 25, 9:56 PM EDT, 51 minutes before

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Special weather statement, Aug 25, 10:19 PM EDT, 28 minutes before

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Special weather statement, Aug 25, 10:47 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 25, 8:23 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson	39 min
Aug 25, 8:35 PM EDT	Areal Flood Advisory	RNK	Carroll	3 hr
Aug 25, 8:37 PM EDT	Special Weather Statement	RNK	Appomattox, Campbell	38 min
Aug 25, 8:46 PM EDT	Special Weather Statement	RNK	City of Martinsville	44 min
Aug 25, 8:58 PM EDT	Special Weather Statement	RNK	Campbell	47 min
Aug 25, 9:11 PM EDT	Special Weather Statement	RNK	Henry	49 min
Aug 25, 10:19 PM EDT	Special Weather Statement	RNK	Halifax	41 min
Aug 26, 12:18 AM EDT	Areal Flood Advisory	RNK	Carroll, Grayson, Patrick, City of Galax	6 hr
Aug 26, 12:58 AM EDT	Flash Flood Warning	RNK	Carroll, Grayson, Patrick, City of Galax	4 hr
Aug 25, 10:50 PM EDT	Special Weather Statement	RNK	Caswell	55 min
Aug 25, 11:24 PM EDT	Special Weather Statement	RNK	Surry, Yadkin	66 min
Aug 26, 7:50 PM EDT	Special Weather Statement	RNK	Ashe	55 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.