Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Blacksburg, VA

September 1, 2021Stokes County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Sep 1, 2021, 2:47 PM EDT for Stokes County, North Carolina. It was in force for 28 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: Sep 1, 2021, 2:47 PM EDT (18:47 UTC)
Expired: Sep 1, 2021, 3:15 PM EDT
In force: 28 min
Issued by: NWS Blacksburg, VA
Hail: 0.00 in
Wind: 30

County Stokes County, NC

The radar

The Roanoke radar (KFCX), 57 km from the middle of the area, began a volume at 18:50 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, 6.8 hours before the alert went out and 59 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: 39 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 637 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Sep 1, 10:51 AM EDT, 3 hours 56 minutes earlier.

Area forecast discussion, Sep 1, 10:51 AM EDT, 3 hours 56 minutes before

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Hazardous weather outlook, Sep 1, 10:57 AM EDT, 3 hours 50 minutes before

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In the hours before

Local storm report, Sep 1, 10:25 AM EDT, 4 hours 22 minutes before

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Local storm report, Sep 1, 10:26 AM EDT, 4 hours 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1026 AM EDT WED SEP 1 2021

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

0708 PM     TSTM WND DMG     2 ENE BLACKSBURG        37.25N 80.39W
08/31/2021                   MONTGOMERY         VA   911 CALL CENTER

            A LARGE TREE BLOCKS THE INTERSECTION OF
            HAPPY HOLLOW ROAD AND GOBBLERS KNOB ROAD.

&&

EST

Local storm report, Sep 1, 10:27 AM EDT, 4 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1027 AM EDT WED SEP 1 2021

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

0759 PM     TSTM WND DMG     2 E MERRIMAC            37.19N 80.38W
08/31/2021                   MONTGOMERY         VA   911 CALL CENTER

            CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2
            E MERRIMAC. A LARGE TREE BLOCKING THE ROAD
            ALONG THE 936 BLOCK OF JENELLE ROAD.

&&

EST

Special weather statement, Sep 1, 11:38 AM EDT, 3 hours 9 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
1138 AM EDT Wed Sep 1 2021

VAZ014-017-022-023-033-011600-
Botetourt VA-Franklin VA-Floyd VA-Montgomery VA-Roanoke VA-
1138 AM EDT Wed Sep 1 2021

...A line of showers and thunderstorms will impact portions of
Roanoke, northeastern Floyd, southwestern Botetourt, western
Franklin and southeastern Montgomery Counties, the City of Salem and
the City of Roanoke through NOON EDT...

At 1135 AM EDT, Doppler radar was tracking a line of showers and
thunderstorms extending from near Catawba to near Floyd. Movement
was east at 30 mph. This line is indicating signs of intensification
and will be monitored closely over the next hour.

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...
Roanoke...
Salem...
Vinton...
Troutville...
Floyd...
Boones Mill...
and Copper Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3751 7978 3683 8007 3685 8009 3687 8023
      3686 8029 3687 8041 3738 8020 3738 8015
      3742 8008 3746 8004
TIME...MOT...LOC 1535Z 249DEG 25KT 3741 8008 3688 8035

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

16

Special weather statement, Sep 1, 11:59 AM EDT, 2 hours 48 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
1159 AM EDT Wed Sep 1 2021

VAZ017-022-023-033-011645-
Botetourt VA-Franklin VA-Floyd VA-Roanoke VA-
1159 AM EDT Wed Sep 1 2021

...Strong showers will impact portions of Roanoke, northeastern
Floyd, southwestern Botetourt and western Franklin Counties, the
City of Salem and the City of Roanoke through 1245 PM EDT...

At 1157 AM EDT, Doppler radar was tracking a line of heavy showers
with occasional embedded thunderstorms extending from 6 miles
northeast of Catawba to near Floyd. Movement was northeast at 20
mph. This line is indicating signs of intensification and will be
monitored closely through 1 pm.

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...
Roanoke...
Salem...
Vinton...
Troutville...
Boones Mill...
Copper Hill...
and Bent Mountain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3752 7978 3687 8005 3687 8030 3710 8021
      3711 8018 3717 8018 3742 8009 3747 8003
TIME...MOT...LOC 1557Z 241DEG 19KT 3744 8003 3688 8026

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

16

Special weather statement, Sep 1, 2:47 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
247 PM EDT Wed Sep 1 2021

NCZ004-VAZ032-011915-
Stokes NC-Patrick VA-
247 PM EDT Wed Sep 1 2021

...A strong thunderstorm will impact portions of
northern Stokes and southeastern Patrick Counties through 315 PM
EDT...

At 247 PM EDT, Doppler radar was tracking a strong thunderstorm over
Collinstown, or over Francisco, moving east at 15 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...
Danbury...
Sandy Ridge...
Francisco...
Collinstown...
Meadows...
and Prestonville.

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.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3650 8043 3658 8039 3661 8008 3635 8015
TIME...MOT...LOC 1847Z 281DEG 12KT 3652 8036

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

VFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 31, 8:00 PM EDT	Areal Flood Advisory	RNK	Craig, Floyd, Giles, Montgomery, City of Radford	5 hr
Aug 31, 8:26 PM EDT	Special Weather Statement	RNK	Craig, Roanoke, City of Roanoke, City of Salem	34 min
Aug 31, 8:40 PM EDT	Areal Flood Advisory	RNK	Bedford, Botetourt, Craig, Floyd, Franklin, Montgomery and 3 more	3 hr
Aug 31, 8:43 PM EDT	Special Weather Statement	RNK	Craig	32 min
Aug 31, 9:12 PM EDT	Special Weather Statement	RNK	Botetourt	33 min
Aug 31, 9:18 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	27 min
Aug 31, 9:35 PM EDT	Tornado Warning	RNK	Bedford, Botetourt	25 min
Aug 31, 9:44 PM EDT	Flash Flood Warning	RNK	Botetourt, Craig, Roanoke	5 hr
Aug 31, 9:47 PM EDT	Special Weather Statement	RNK	Alleghany, Bath, City of Covington	28 min
Aug 31, 9:58 PM EDT	Tornado Warning	RNK	Bedford, Botetourt, Rockbridge	32 min
Aug 31, 10:26 PM EDT	Special Weather Statement	RNK	Rockbridge, City of Buena Vista, City of Lexington	34 min
Aug 31, 10:30 PM EDT	Special Weather Statement	RNK	Botetourt	30 min
Aug 31, 10:32 PM EDT	Areal Flood Advisory	RNK	Bedford, Botetourt, Rockbridge	3 hr
Aug 31, 10:44 PM EDT	Tornado Warning	RNK	Amherst, Rockbridge, City of Buena Vista	31 min
Aug 31, 11:10 PM EDT	Areal Flood Advisory	RNK	Amherst, Rockbridge, City of Buena Vista, City of Lexington	3 hr
Aug 31, 11:17 PM EDT	Special Weather Statement	RNK	City of Buena Vista	28 min
Sep 1, 12:38 AM EDT	Special Weather Statement	RNK	Rockbridge	22 min
Sep 1, 5:29 AM EDT	Areal Flood Advisory	RNK	Alleghany, Botetourt, Craig, Roanoke	3 hr
Sep 1, 7:27 AM EDT	Special Weather Statement	RNK	Campbell, Pittsylvania, City of Danville, City of Lynchburg	48 min
Sep 1, 7:54 AM EDT	Special Weather Statement	RNK	Amherst, City of Lynchburg	51 min
Sep 1, 8:43 AM EDT	Special Weather Statement	RNK	Amherst	32 min
Sep 1, 9:17 AM EDT	Areal Flood Advisory	RNK	Franklin	118 min
Sep 1, 11:38 AM EDT	Special Weather Statement	RNK	Floyd, Roanoke, City of Roanoke, City of Salem	22 min
Sep 1, 11:59 AM EDT	Special Weather Statement	RNK	City of Roanoke, City of Salem	46 min
Sep 1, 12:06 PM EDT	Areal Flood Advisory	RNK	Carroll, Floyd, Franklin, Montgomery, Patrick, Roanoke and 1 more	3 hr
Sep 1, 3:47 PM EDT	Areal Flood Advisory	RNK	Patrick	2 hr
Sep 1, 4:35 AM EDT	Areal Flood Advisory	RNK	Ashe, Watauga	3 hr
Sep 1, 3:20 PM EDT	Special Weather Statement	RNK	Stokes	25 min
Sep 1, 3:27 PM EDT	Special Weather Statement	RNK	Wilkes	33 min
Sep 1, 4:12 PM EDT	Special Weather Statement	RNK	Yadkin	33 min

Nearby

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.