Alert archive / Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Blacksburg, VA

August 7, 2021Giles County, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 7, 2021, 4:55 PM EDT for Giles County, Virginia. It was in force for 35 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, 4:55 PM EDT (20:55 UTC)
Expired: Aug 7, 2021, 5:30 PM EDT
In force: 35 min
Issued by: NWS Blacksburg, VA
Hail: 0.00 in
Wind: 30

County Giles County, VA

The radar

The Roanoke radar (KFCX), 60 km from the middle of the area, began a volume at 20:57 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

Roanoke, VA (KRNK), launched 12:00Z, 8.9 hours before the alert went out and 120 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1171 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

913 
WWUS81 KRNK 072055
SPSRNK

Special Weather Statement
National Weather Service BLACKSBURG VA
455 PM EDT Sat Aug 7 2021
 
VAZ010-011-WVZ042-043-072130-
Giles VA-Bland VA-Mercer WV-Summers WV-
455 PM EDT Sat Aug 7 2021

...Strong thunderstorms will impact portions of 
western Giles, northeastern Bland, south central Summers and
southeastern Mercer Counties through 530 PM EDT...

At 455 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Elgood to near Kimberling. Movement was
southeast at 20 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...
Pearisburg...
Narrows...
Athens...
Peterstown...
Poplar Hill...
Rich Creek...
and Oakvale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3752 8092 3745 8084 3743 8086 3742 8083
      3740 8080 3740 8079 3737 8077 3738 8075
      3726 8062 3720 8074 3718 8080 3712 8089
      3711 8093 3710 8093 3706 8100 3731 8113
TIME...MOT...LOC 2055Z 331DEG 21KT 3740 8091 3721 8102 

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, 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, 6:00 PM EDT	Special Weather Statement	RNK	Pulaski	30 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.