Alert archive / Virginia / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

August 5, 20127 counties in Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 5, 2012, 8:08 PM EDT for 7 counties in Virginia. 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: Aug 5, 2012, 8:08 PM EDT (00:08 UTC)
Expired: Aug 5, 2012, 9:00 PM EDT
In force: 52 min
Issued by: NWS Blacksburg, VA

Counties Alleghany County, VA, Amherst County, VA, Bath County, VA, City of Buena Vista, VA, City of Covington, VA, City of Lexington, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 122 km from the middle of the area, began a volume at 00:10 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, 0.1 hours before the alert went out and 209 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: 286 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1128 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 38 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.

974 
WWUS81 KRNK 060008
SPSRNK

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
808 PM EDT SUN AUG 5 2012

VAZ019-020-023-024-034-035-060100-
ALLEGHANY VA-AMHERST VA-BATH VA-BEDFORD VA-BOTETOURT VA-ROCKBRIDGE VA-
808 PM EDT SUN AUG 5 2012

...SHOWERS AND ISOLATED THUNDERSTORMS WITH HEAVY RAIN WILL AFFECT 
ALLEGHANY...AMHERST...BATH...BEDFORD...BOTETOURT AND ROCKBRIDGE 
COUNTIES...

AT 805 PM EDT...SHOWERS AND ISOLATED THUNDERSTORMS WITH HEAVY RAIN 
WERE ALONG A LINE FROM 11 MILES NORTHWEST OF WARM SPRINGS TO JORDAN 
MINES...MOVING EAST AT 15 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 CALLISON...AND COVINGTON CITY AROUND 815 
PM...CARLOOVER...AND BACOVA JUNCTION AROUND 820 
PM...HOLLINS...HOLLINS...AND HOT SPRINGS AROUND 825 PM...WARM 
SPRINGS...AND INGALLS FIELD AROUND 830 PM AND DOUTHAT STATE PARK 
AROUND 840 PM.

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

LAT...LON 3822 7970 3820 7955 3818 7951 3816 7952
      3817 7944 3809 7948 3793 7920 3787 7914
      3782 7916 3777 7906 3771 7905 3770 7899
      3746 7922 3744 7925 3744 7928 3769 8020
      3792 8010 3803 7997 3818 7992 3827 7981

$$

KK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 9:00 PM EDT	Areal Flood Advisory	RNK	Botetourt, Craig, Floyd, Montgomery, Pulaski, Roanoke and 4 more	107 min
Aug 5, 9:11 PM EDT	Special Weather Statement	RNK	Carroll, Grayson, City of Galax	64 min
Aug 6, 4:17 AM EDT	Flash Flood Watch	RNK	Grayson	11 hr
Aug 6, 2:47 PM EDT	Special Weather Statement	RNK	Halifax	58 min
Aug 6, 3:03 PM EDT	Special Weather Statement	RNK	Appomattox	57 min
Aug 6, 5:42 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	63 min
Aug 6, 6:16 PM EDT	Special Weather Statement	RNK	Charlotte	59 min
Aug 6, 6:59 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	61 min
Aug 6, 7:14 PM EDT	Areal Flood Advisory	RNK	Henry, Pittsylvania, City of Martinsville	109 min
Aug 6, 7:36 PM EDT	Special Weather Statement	RNK	Stokes	54 min

Nearby

Special Weather Statements in Virginia, 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.