Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Blacksburg, VA

April 25, 2011Ashe County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Apr 25, 2011, 4:08 PM EDT for Ashe County, North Carolina. It was in force for 37 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: Apr 25, 2011, 4:08 PM EDT (20:08 UTC)
Expired: Apr 25, 2011, 4:45 PM EDT
In force: 37 min
Issued by: NWS Blacksburg, VA

County Ashe County, NC

The radar

The Roanoke radar (KFCX), 125 km from the middle of the area, began a volume at 20:07 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 12:00Z, 8.1 hours before the alert went out and 137 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: 593 J/kg
Mixed-layer CIN: -130 J/kg
Mixed-layer LCL: 855 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -61 m²/s²
0-3 km storm-relative helicity: -18 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 Apr 25, 3:51 PM EDT, 17 minutes earlier.

Area forecast discussion, Apr 25, 3:51 PM EDT, 17 minutes before

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Hazardous weather outlook, Apr 25, 4:57 AM EDT, 11 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
457 AM EDT MON APR 25 2011

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>045-261000-
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-
457 AM EDT MON APR 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.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS TUESDAY AFTERNOON
AS WELL AS WEDNESDAY INTO THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Apr 25, 3:27 PM EDT, 41 minutes before

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Local storm report, Apr 25, 3:43 PM EDT, 25 minutes before

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Special weather statement, Apr 25, 3:51 PM EDT, 17 minutes before

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Special weather statement, Apr 25, 3:54 PM EDT, 14 minutes before

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Local storm report, Apr 25, 4:08 PM EDT, 0 minutes before

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Special weather statement, Apr 25, 4:08 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
Apr 25, 12:58 PM EDT	Special Weather Statement	RNK	Grayson, Wythe	62 min
Apr 25, 1:24 PM EDT	Special Weather Statement	RNK	Smyth	66 min
Apr 25, 2:15 PM EDT	Special Weather Statement	RNK	Wythe	45 min
Apr 25, 2:30 PM EDT	Special Weather Statement	RNK	Smyth	45 min
Apr 25, 3:08 PM EDT	Special Weather Statement	RNK	Tazewell	37 min
Apr 25, 3:13 PM EDT	Severe Thunderstorm Warning	RNK	Smyth, Tazewell	32 min
Apr 25, 3:21 PM EDT	Special Weather Statement	RNK	Carroll	39 min
Apr 25, 3:51 PM EDT	Special Weather Statement	RNK	Smyth, Tazewell	39 min
Apr 25, 3:58 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Grayson, Smyth, Tazewell, Wythe	62 min
Apr 25, 4:44 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Wythe	61 min
Apr 25, 5:17 PM EDT	Tornado Warning	RNK	Wythe	14 min
Apr 25, 5:47 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Pulaski, Wythe	11 min
Apr 25, 6:06 PM EDT	Special Weather Statement	RNK	Bath	24 min
Apr 25, 6:55 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell	30 min
Apr 25, 12:59 PM EDT	Special Weather Statement	RNK	Ashe, Watauga	61 min
Apr 25, 1:09 PM EDT	Special Weather Statement	RNK	Wilkes	66 min
Apr 25, 1:41 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Wilkes	64 min
Apr 25, 4:47 PM EDT	Special Weather Statement	RNK	Ashe	43 min
Apr 25, 3:24 PM EDT	Special Weather Statement	RNK	Mercer	51 min
Apr 25, 3:54 PM EDT	Special Weather Statement	RNK	Summers	51 min
Apr 25, 4:41 PM EDT	Special Weather Statement	RNK	Greenbrier	49 min
Apr 25, 4:58 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier	32 min

Nearby

Special Weather Statements in North Carolina, 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.