Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Blacksburg, VA

September 25, 2011Alleghany County, Wilkes County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Sep 25, 2011, 3:08 AM EDT for Alleghany County, Wilkes County, North Carolina. It was in force for 52 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: Sep 25, 2011, 3:08 AM EDT (07:08 UTC)
Expired: Sep 25, 2011, 4:00 AM EDT
In force: 52 min
Issued by: NWS Blacksburg, VA

Counties Alleghany County, NC, Wilkes County, NC

The radar

The Roanoke radar (KFCX), 122 km from the middle of the area, began a volume at 07:11 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, 7.1 hours before the alert went out and 119 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: 367 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 666 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 11 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.

540 
WWUS81 KRNK 250708
SPSRNK

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
308 AM EDT SUN SEP 25 2011

NCZ002-003-019-250800-
ALLEGHANY NC-SURRY NC-WILKES NC-
308 AM EDT SUN SEP 25 2011

...SHOWERS AND ISOLATED THUNDERSTORMS WITH HEAVY RAIN WILL AFFECT 
ALLEGHANY...SURRY AND WILKES COUNTIES...

AT 302 AM EDT...SHOWERS AND ISOLATED THUNDERSTORMS WITH HEAVY RAIN 
WAS LOCATED NEAR BOOMER NORTHWARD TO SPARTA...MOVING NORTHEAST 
AT 25 MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THESE STORMS. VERY HEAVY RAIN
WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS
AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. 

STORMS WILL BE NEAR BUCK...AND WILKESBORO AROUND 315 
AM...CRICKET...MILLERS CREEK...NORTH WILKESBORO...AND WINDY GAP 
AROUND 320 AM...FAIRPLAINS...AND WILBAR AROUND 325 AM...MULBERRY AND 
AND WILKES COUNTY AIRPORT AROUND 330 AM.

LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR LATER
UPDATES OR POSSIBLE WARNINGS.

LAT...LON 3607 8142 3610 8149 3637 8130 3636 8128
      3636 8125 3639 8124 3642 8126 3657 8116
      3656 8083 3605 8088 3605 8099 3603 8106
      3603 8121 3599 8133

$$

KK

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 25, 3:48 AM EDT	Special Weather Statement	RNK	Grayson, Smyth, Wythe	57 min
Sep 25, 4:14 AM EDT	Flash Flood Warning	RNK	Bland, Grayson, Smyth, Wythe	3 hr
Sep 25, 5:31 AM EDT	Special Weather Statement	RNK	Bland	59 min
Sep 25, 10:40 AM EDT	Special Weather Statement	RNK	Bland	50 min
Sep 25, 3:47 PM EDT	Special Weather Statement	RNK	Craig	28 min
Sep 25, 6:49 PM EDT	Special Weather Statement	RNK	City of Galax	26 min
Sep 24, 9:47 PM EDT	Special Weather Statement	RNK	Watauga	118 min
Sep 24, 11:44 PM EDT	Special Weather Statement	RNK	Ashe, Watauga	76 min
Sep 25, 1:00 AM EDT	Special Weather Statement	RNK	Ashe, Watauga	60 min
Sep 25, 2:03 AM EDT	Flash Flood Warning	RNK	Watauga	5 hr
Sep 25, 2:45 AM EDT	Special Weather Statement	RNK	Ashe	60 min
Sep 25, 2:59 AM EDT	Flash Flood Warning	RNK	Ashe	4 hr
Sep 25, 5:20 PM EDT	Severe Thunderstorm Warning	RNK	Surry, Wilkes, Yadkin	40 min
Sep 25, 6:09 PM EDT	Special Weather Statement	RNK	Surry	36 min
Sep 25, 3:12 PM EDT	Special Weather Statement	RNK	Monroe	33 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.