Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

April 27, 2012Ashe County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Apr 27, 2012, 12:12 AM EDT for Ashe County, North Carolina. It was in force for 63 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 27, 2012, 12:12 AM EDT (04:12 UTC)
Expired: Apr 27, 2012, 1:15 AM EDT
In force: 63 min
Issued by: NWS Blacksburg, VA

County Ashe County, NC

The radar

The Roanoke radar (KFCX), 132 km from the middle of the area, began a volume at 04:15 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, 4.2 hours before the alert went out and 152 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: 1170 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 882 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.2

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 26, 11:13 PM EDT, 59 minutes earlier.

Area forecast discussion, Apr 26, 11:13 PM EDT, 59 minutes before

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Hazardous weather outlook, Apr 26, 3:35 PM EDT, 8 hours 37 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
335 PM EDT THU APR 26 2012

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>045-271945-
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-
335 PM EDT THU APR 26 2012

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...THIS AFTERNOON AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

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

STRONG THUNDERSTORMS ARE POSSIBLE ACROSS THE REGION ON SATURDAY AS
A WARM FRONT LIFTS TOWARD THE AREA...SUPPORTED BY AN UPPER LEVEL
DISTURBANCE APPROACHING FROM THE WEST.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Apr 26, 9:36 PM EDT, 2 hours 36 minutes before

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Local storm report, Apr 26, 10:13 PM EDT, 1 hour 59 minutes before

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Local storm report, Apr 26, 10:29 PM EDT, 1 hour 43 minutes before

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Special weather statement, Apr 26, 11:35 PM EDT, 37 minutes before

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Local storm report, Apr 26, 11:48 PM EDT, 24 minutes before

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Special weather statement, Apr 27, 12:12 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
Apr 26, 8:22 PM EDT	Special Weather Statement	RNK	Bland, Pulaski	53 min
Apr 26, 9:17 PM EDT	Special Weather Statement	RNK	Bland, Pulaski	58 min
Apr 27, 12:46 AM EDT	Areal Flood Warning	RNK	Bland, Tazewell	6 hr
Apr 27, 6:44 AM EDT	Areal Flood Advisory	RNK	Bland, Tazewell	3 hr
Apr 27, 9:32 AM EDT	Areal Flood Advisory	RNK	Bland, Tazewell	3 hr
Apr 27, 4:12 PM EDT	Frost Advisory	RNK	Bath	14 hr
Apr 26, 9:36 PM EDT	Special Weather Statement	RNK	Watauga, Wilkes	54 min
Apr 26, 11:35 PM EDT	Special Weather Statement	RNK	Alleghany	55 min
Apr 27, 12:14 AM EDT	Special Weather Statement	RNK	Alleghany	46 min
Apr 27, 12:31 AM EDT	Areal Flood Warning	RNK	Mercer, Summers	18 hr

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.