Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

August 11, 2012Stokes County, Yadkin County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Aug 11, 2012, 12:30 AM EDT for Stokes County, Yadkin County, North Carolina. It was in force for 60 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 11, 2012, 12:30 AM EDT (04:30 UTC)
Expired: Aug 11, 2012, 1:30 AM EDT
In force: 60 min
Issued by: NWS Blacksburg, VA

Counties Stokes County, NC, Yadkin County, NC

The radar

The Roanoke radar (KFCX), 91 km from the middle of the area, began a volume at 04:31 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, 4.5 hours before the alert went out and 50 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: 781 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 955 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

199 
WWUS81 KRNK 110430
SPSRNK

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1230 AM EDT SAT AUG 11 2012

NCZ003>005-020-110530-
ROCKINGHAM NC-STOKES NC-SURRY NC-YADKIN NC-
1230 AM EDT SAT AUG 11 2012

...A STRONG THUNDERSTORM WILL AFFECT ROCKINGHAM...STOKES...SURRY AND
YADKIN COUNTIES...

AT 1227 AM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER BOONVILLE...
MOVING EAST AT 25 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. VERY HEAVY RAIN
WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND
QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. EXPECT FREQUENT
CLOUD TO GROUND LIGHTNING FROM THIS STORM. DO NOT STAY IN THE OPEN OR
SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN
A THUNDERSTORM APPROACHES. 

THIS STORM WILL BE NEAR NEBO...ROCKFORD...AND SHACKTOWN AROUND 1235 
AM...LEVEL CROSS...AND HUNTSVILLE AROUND 1245 AM...SILOAM...AND EAST 
BEND AROUND 1250 AM...ENON AROUND 1255 AM AND PILOT MOUNTAIN STATE 
PARK AROUND 105 AM.

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

LAT...LON 3606 8087 3629 8086 3655 7998 3654 7994
      3625 7987 3626 8044 3614 8044 3611 8046
      3610 8050 3604 8050

$$

KK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 9:40 PM EDT	Special Weather Statement	RNK	City of Martinsville	35 min
Aug 10, 9:54 PM EDT	Special Weather Statement	RNK	Franklin	36 min
Aug 10, 10:38 PM EDT	Special Weather Statement	RNK	Campbell, City of Lynchburg	52 min
Aug 10, 11:26 PM EDT	Special Weather Statement	RNK	Appomattox	34 min
Aug 10, 11:59 PM EDT	Special Weather Statement	RNK	Franklin	61 min
Aug 11, 1:17 AM EDT	Special Weather Statement	RNK	Campbell	58 min
Aug 11, 2:30 AM EDT	Special Weather Statement	RNK	Appomattox, Buckingham, Campbell	60 min
Aug 11, 5:14 AM EDT	Special Weather Statement	RNK	Halifax	61 min
Aug 11, 7:21 PM EDT	Special Weather Statement	RNK	City of Martinsville	39 min
Aug 11, 7:24 PM EDT	Severe Thunderstorm Warning	RNK	Henry, City of Martinsville	37 min
Aug 10, 9:17 PM EDT	Special Weather Statement	RNK	Wilkes	43 min
Aug 10, 9:48 PM EDT	Areal Flood Advisory	RNK	Wilkes	3 hr
Aug 10, 10:23 PM EDT	Special Weather Statement	RNK	Surry, Wilkes	37 min
Aug 10, 10:48 PM EDT	Special Weather Statement	RNK	Yadkin	27 min
Aug 11, 1:14 AM EDT	Areal Flood Advisory	RNK	Stokes, Surry, Yadkin	4 hr
Aug 11, 5:01 AM EDT	Special Weather Statement	RNK	Wilkes	59 min
Aug 11, 5:17 AM EDT	Severe Thunderstorm Warning	RNK	Watauga, Wilkes	36 min
Aug 11, 1:30 PM EDT	Special Weather Statement	RNK	Caswell	30 min
Aug 11, 2:08 PM EDT	Special Weather Statement	RNK	Caswell	52 min
Aug 11, 6:05 PM EDT	Special Weather Statement	RNK	Rockingham	25 min
Aug 11, 6:34 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes	41 min

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.