Alert archive / Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Blacksburg, VA

August 31, 2021Smyth County, Virginia; Ashe County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Aug 31, 2021, 1:42 AM EDT for Smyth County, Virginia; Ashe County, North Carolina. It was in force for 33 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 31, 2021, 1:42 AM EDT (05:42 UTC)
Expired: Aug 31, 2021, 2:15 AM EDT
In force: 33 min
Issued by: NWS Blacksburg, VA
Hail: 0.00 in
Wind: 40

Counties Ashe County, NC, Smyth County, VA

The radar

The Roanoke radar (KFCX), 121 km from the middle of the area, began a volume at 05:45 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 00:00Z, 5.7 hours before the alert went out and 192 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: 30 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1618 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Blacksburg, VA wrote its last area forecast discussion before this special weather statement went out at Aug 31, 1:33 AM EDT, 9 minutes earlier.

Area forecast discussion, Aug 31, 1:33 AM EDT, 9 minutes before

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Hazardous weather outlook, Aug 30, 3:29 PM EDT, 10 hours 13 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
329 PM EDT Mon Aug 30 2021

NCZ005-006-VAZ043>047-058-059-311930-
Rockingham-Caswell-Henry-Pittsylvania-Campbell-Appomattox-Buckingham-
Halifax-Charlotte-
329 PM EDT Mon Aug 30 2021

This Hazardous Weather Outlook is for north central North Carolina,
central Virginia and south central Virginia.

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms will be possible through this evening. The
main concern will be locally heavy rainfall and localized flooding or
flash flooding.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The remnants of Ida will be passing through the region late Tuesday
through Wednesday. Showers and a few thunderstorms associated with
Ida could bring torrential rains with flooding possible. Isolated
strong to severe storms are possible with damaging winds and brief
tornadoes the main threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Reports should be submitted by
phone by calling 1-866-215-4324, social media, by email at
rnk.skywarn@noaa.gov or online at www.weather.gov/rnk.

NCZ001>004-018>020-VAZ007-009>020-022>024-032>035-WVZ042>044-507-508-
311930-
Ashe-Alleghany NC-Surry-Stokes-Watauga-Wilkes-Yadkin-Tazewell-Smyth-
Bland-Giles-Wythe-Pulaski-Montgomery-Grayson-Carroll-Floyd-Craig-
Alleghany VA-Bath-Roanoke-Botetourt-Rockbridge-Patrick-Franklin-
Bedford-Amherst-Mercer-Summers-Monroe-Eastern Greenbrier-
Western Greenbrier-
329 PM EDT Mon Aug 30 2021

...FLASH FLOOD WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...

This Hazardous Weather Outlook is for north central North Carolina,
northwest North Carolina, central Virginia, south central Virginia,
southwest Virginia, west central Virginia and southeast West
Virginia.

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms will be possible this afternoon and evening.
The main concern will be locally heavy rainfall and localized
flooding or flash flooding.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

In addition, isolate strong to severe storms may bring a damaging
wind and brief tornado threat Tuesday afternoon into Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Reports should be submitted by
phone by calling 1-866-215-4324, social media, by email at
rnk.skywarn@noaa.gov or online at www.weather.gov/rnk.

In the hours before

Special weather statement, Aug 30, 7:45 PM EDT, 5 hours 57 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
745 PM EDT Mon Aug 30 2021

VAZ016-032-310015-
Patrick VA-Carroll VA-
745 PM EDT Mon Aug 30 2021

...Two thunderstorms will merge and impact portions of southeastern
Carroll and west central Patrick Counties through 815 PM EDT...

At 744 PM EDT, Doppler radar was tracking two strong thunderstorms
over Fancy Gap. These storms will merge and then move northeast at
20 mph.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down weak trees, tree limbs and
         blow around unsecured objects. Minor damage to outdoor
         objects is possible.

Locations impacted include...
Hillsville...
Fancy Gap...
Cana...
Gladesboro...
Laurel Fork...
and Woodlawn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 3656 8065 3673 8082 3678 8056 3667 8044
      3656 8061
TIME...MOT...LOC 2344Z 249DEG 16KT 3666 8070

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

WP

Local storm report, Aug 30, 8:09 PM EDT, 5 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
809 PM EDT MON AUG 30 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0723 PM     TSTM WND DMG     2 NW AIKEN SUMMIT       36.63N 79.73W
08/30/2021                   HENRY              VA   911 CALL CENTER

            SEVERAL TREES DOWN ALONG POPLAR FORK ROAD.
            TIME ESTIMATED BY RADAR.

&&

WHP

Special weather statement, Aug 30, 8:28 PM EDT, 5 hours 14 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
828 PM EDT Mon Aug 30 2021

VAZ033-043-310100-
Henry VA-Franklin VA-
828 PM EDT Mon Aug 30 2021

...A strong thunderstorm will impact portions of northwestern Henry
and south central Franklin Counties through 900 PM EDT...

At 828 PM EDT, Doppler radar was tracking a strong thunderstorm over
Bassett, moving northeast at 15 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Bassett...
Oak Level...
Stanleytown...
Philpott Dam...
Figsboro...
and Collinsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3677 8009 3679 8008 3679 8004 3681 8006
      3691 7995 3679 7975 3669 8000
TIME...MOT...LOC 0028Z 238DEG 11KT 3675 8001

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

BMG

Local storm report, Aug 30, 8:49 PM EDT, 4 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
849 PM EDT MON AUG 30 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0757 PM     TSTM WND DMG     4 SSE KEELING           36.67N 79.27W
08/30/2021                   PITTSYLVANIA       VA   PUBLIC

            ONE TREE DOWN BLOCKING PART OF KENTUCK ROAD.

&&

WHP

Special weather statement, Aug 30, 8:59 PM EDT, 4 hours 43 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
859 PM EDT Mon Aug 30 2021

VAZ033-043-044-310130-
Henry VA-Franklin VA-Pittsylvania VA-
859 PM EDT Mon Aug 30 2021

...Strong thunderstorms will impact portions of west central
Pittsylvania, northern Henry and southeastern Franklin Counties
through 930 PM EDT...

At 859 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Oak Level to Figsboro to Leatherwood.
Movement was northeast at 20 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Sydnorsville...
Axton...
Bassett...
Snow Creek...
Leatherwood...
Mountain Valley...
and Sandy River.

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 3674 7989 3679 8004 3680 8004 3681 8006
      3696 7991 3691 7970 3677 7956 3663 7972
TIME...MOT...LOC 0059Z 234DEG 18KT 3684 7997 3681 7987 3671 7975

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

BMG

Special weather statement, Aug 31, 1:42 AM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 8:28 PM EDT	Special Weather Statement	RNK	City of Martinsville	32 min
Aug 30, 8:59 PM EDT	Special Weather Statement	RNK	City of Martinsville	31 min
Aug 31, 2:59 PM EDT	Wind Advisory	RNK	Grayson, Smyth, Tazewell	15 hr
Aug 31, 4:29 PM EDT	Special Weather Statement	RNK	Carroll	31 min
Aug 31, 4:54 PM EDT	Tornado Warning	RNK	Carroll	36 min
Aug 31, 4:57 PM EDT	Special Weather Statement	RNK	City of Galax	33 min
Aug 31, 5:36 PM EDT	Special Weather Statement	RNK	Floyd	24 min
Aug 31, 6:29 PM EDT	Special Weather Statement	RNK	Montgomery, City of Radford	31 min
Aug 31, 6:39 PM EDT	Tornado Warning	RNK	Montgomery, City of Radford	36 min
Aug 31, 7:11 PM EDT	Tornado Warning	RNK	Craig, Montgomery	34 min
Aug 31, 7:29 PM EDT	Special Weather Statement	RNK	Montgomery, City of Radford	31 min
Aug 31, 7:33 PM EDT	Special Weather Statement	RNK	Floyd	27 min
Aug 31, 7:50 PM EDT	Tornado Warning	RNK	Giles, Montgomery	25 min
Aug 31, 6:07 PM EDT	Severe Thunderstorm Warning	RNK	Ashe, Watauga, Wilkes	38 min

Nearby

Special Weather Statements in Virginia, 2021 Special Weather Statements in North Carolina, 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.