Alert archive / Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Blacksburg, VA

August 7, 2021Pulaski County, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 7, 2021, 6:00 PM EDT for Pulaski County, Virginia. It was in force for 30 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 7, 2021, 6:00 PM EDT (22:00 UTC)
Expired: Aug 7, 2021, 6:30 PM EDT
In force: 30 min
Issued by: NWS Blacksburg, VA
Hail: 0.00 in
Wind: 30

County Pulaski County, VA

The radar

The Roanoke radar (KFCX), 53 km from the middle of the area, began a volume at 22:03 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, 10.0 hours before the alert went out and 123 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: 17 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 543 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

678 
WWUS81 KRNK 072200
SPSRNK

Special Weather Statement
National Weather Service BLACKSBURG VA
600 PM EDT Sat Aug 7 2021
 
VAZ012-013-016-072230-
Pulaski VA-Wythe VA-Carroll VA-
600 PM EDT Sat Aug 7 2021

...Strong thunderstorms will impact portions of 
southwestern Pulaski, eastern Wythe and northwestern Carroll Counties
through 630 PM EDT...

At 600 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Pulaski to near Ivanhoe. Movement was
south at 25 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Pulaski...
Max Meadows...
Patterson...
Allisonia...
Fort Chiswell...
Grahams Forge...
and Gunton Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning.

&&

LAT...LON 3670 8095 3691 8099 3715 8086 3715 8084
      3693 8063 3687 8059 3668 8094
TIME...MOT...LOC 2200Z 350DEG 24KT 3708 8087 3685 8091 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

$$

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 2:21 PM EDT	Special Weather Statement	RNK	Smyth, Tazewell	54 min
Aug 7, 3:28 PM EDT	Special Weather Statement	RNK	Grayson, Wythe	62 min
Aug 7, 3:40 PM EDT	Special Weather Statement	RNK	Tazewell	65 min
Aug 7, 4:03 PM EDT	Special Weather Statement	RNK	Buchanan	27 min
Aug 7, 4:34 PM EDT	Special Weather Statement	RNK	Grayson, Wythe	26 min
Aug 7, 4:55 PM EDT	Special Weather Statement	RNK	Giles	35 min
Aug 7, 5:09 PM EDT	Special Weather Statement	RNK	Giles	36 min
Aug 7, 5:27 PM EDT	Special Weather Statement	RNK	Pulaski	33 min
Aug 7, 5:38 PM EDT	Special Weather Statement	RNK	Carroll, City of Galax	37 min
Aug 7, 5:40 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Patrick, City of Galax	65 min
Aug 7, 6:43 PM EDT	Special Weather Statement	RNK	Carroll	32 min
Aug 7, 6:54 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Patrick	66 min
Aug 7, 3:54 PM EDT	Special Weather Statement	RNK	Wilkes	51 min
Aug 7, 4:24 PM EDT	Severe Thunderstorm Warning	RNK	Watauga, Wilkes	43 min
Aug 7, 4:39 PM EDT	Areal Flood Advisory	RNK	Wilkes	3 hr
Aug 7, 4:47 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe, Watauga, Wilkes	58 min
Aug 7, 5:02 PM EDT	Special Weather Statement	RNK	Caldwell	28 min
Aug 7, 5:24 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Surry, Wilkes	66 min
Aug 7, 6:29 PM EDT	Special Weather Statement	RNK	Surry, Yadkin	46 min
Aug 7, 4:14 PM EDT	Special Weather Statement	RNK	Mercer, Summers	46 min

Nearby

Special Weather Statements in Virginia, 2021 Every special weather statement in 2021

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.