Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 93, NWS Blacksburg, VA

July 17, 20216 counties in Virginia; 6 counties in North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 17, 2021, 7:44 PM EDT for 6 counties in Virginia; 6 counties in North Carolina. It was in force for 61 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 17, 2021, 7:44 PM EDT (23:44 UTC)
Expired: Jul 17, 2021, 8:45 PM EDT
In force: 61 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Alleghany County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Wilkes County, NC, Yadkin County, NC, Carroll County, VA, Floyd County, VA, Franklin County, VA, Grayson County, VA, Henry County, VA, Patrick County, VA

The radar

The Roanoke radar (KFCX), 72 km from the middle of the area, began a volume at 23:45 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.

What was reported inside it

Time	Report	Where	Remark
Jul 17, 8:17 PM EDT	TSTM WND DMG	1 S King, NC	TREE DOWN ON PINE STREET IN KING.
Jul 17, 8:30 PM EDT	TSTM WND DMG	Germanton, NC	3 TREES DOWN IN THE GARMANTON AREA.
Jul 17, 8:40 PM EDT	TSTM WND DMG	Walnut Cove, NC	TREE DOWN IN WALNUT COVE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.7 hours before the alert went out and 66 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: 966 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 843 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

951 
WUUS51 KRNK 172344
SVRRNK
NCC005-157-169-171-193-197-VAC035-063-067-077-089-141-180045-
/O.NEW.KRNK.SV.W.0093.210717T2344Z-210718T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
744 PM EDT Sat Jul 17 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Eastern Alleghany County in northwestern North Carolina...
  Surry County in northwestern North Carolina...
  Stokes County in north central North Carolina...
  Northeastern Wilkes County in northwestern North Carolina...
  Northwestern Rockingham County in north central North Carolina...
  Yadkin County in northwestern North Carolina...
  South central Floyd County in southwestern Virginia...
  Southeastern Carroll County in southwestern Virginia...
  Western Henry County in south central Virginia...
  Southeastern Grayson County in southwestern Virginia...
  Southwestern Franklin County in west central Virginia...
  Patrick County in southwestern Virginia...

* Until 845 PM EDT.

* At 744 PM EDT, severe thunderstorms were located along a line
  extending from near Mabry Mill to near Swancreek, moving east at 25
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Mount Airy...
  Elkin...
  Fairview...
  Flat Rock...
  Yadkinville...
  Jonesville...
  and Dobson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for damaging winds. For your safety, move to an
interior room on the lowest floor of a sturdy building. Stay away
from windows.

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

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

&&

LAT...LON 3656 8106 3681 8048 3694 7991 3626 8003
      3626 8045 3622 8043 3621 8045 3616 8044
      3611 8083
TIME...MOT...LOC 2344Z 248DEG 24KT 3680 8042 3619 8082 

HAIL...<.75IN
WIND...60MPH
 
$$

RR

3 follow-up statements

610 
WWUS51 KRNK 180002
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
802 PM EDT Sat Jul 17 2021

NCC005-193-VAC035-063-067-077-180012-
/O.CAN.KRNK.SV.W.0093.000000T0000Z-210718T0045Z/
Alleghany NC-Wilkes NC-Floyd VA-Carroll VA-Grayson VA-Franklin VA-
802 PM EDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
EASTERN ALLEGHANY AND NORTHEASTERN WILKES COUNTIES IN NORTHWESTERN
NORTH CAROLINA...SOUTH CENTRAL FLOYD...SOUTHEASTERN CARROLL...
SOUTHEASTERN GRAYSON COUNTIES IN SOUTHWESTERN VIRGINIA AND
SOUTHWESTERN FRANKLIN COUNTIES IN WEST CENTRAL VIRGINIA IS
CANCELLED...

The storms which prompted the warning have weakened or moved out of 
the warned area. Therefore, the warning has been cancelled.

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

LAT...LON 3612 8078 3647 8068 3670 8038 3679 8004
      3678 8002 3679 8003 3682 7993 3626 8003
      3626 8045 3622 8043 3621 8045 3616 8044
TIME...MOT...LOC 0002Z 248DEG 24KT 3684 8029 3623 8069 

$$

NCC157-169-171-197-VAC089-141-180045-
/O.CON.KRNK.SV.W.0093.000000T0000Z-210718T0045Z/
Surry NC-Stokes NC-Rockingham NC-Yadkin NC-Henry VA-Patrick VA-
802 PM EDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR
EASTERN SURRY...STOKES...NORTHWESTERN ROCKINGHAM...CENTRAL YADKIN...
WESTERN HENRY AND SOUTHEASTERN PATRICK COUNTIES...

At 802 PM EDT, severe thunderstorms were located along a line
extending from near Rocky Knob Summit to Boonville, moving east at 30
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Mount Airy...
Fairview...
Flat Rock...
Yadkinville...
Pilot Mountain...
Walnut Cove...
and Stuart.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for DAMAGING WINDS. For your safety, move to an
interior room on the lowest floor of a sturdy building. Stay away
from windows.

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

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

&&

LAT...LON 3612 8078 3647 8068 3670 8038 3679 8004
      3678 8002 3679 8003 3682 7993 3626 8003
      3626 8045 3622 8043 3621 8045 3616 8044
TIME...MOT...LOC 0002Z 248DEG 24KT 3684 8029 3623 8069 

HAIL...<.75IN
WIND...60MPH
 
$$

RR

151 
WWUS51 KRNK 180016
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
816 PM EDT Sat Jul 17 2021

NCC171-197-180025-
/O.CAN.KRNK.SV.W.0093.000000T0000Z-210718T0045Z/
Surry NC-Yadkin NC-
816 PM EDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
EASTERN SURRY AND CENTRAL YADKIN COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

LAT...LON 3626 8045 3635 8045 3679 8004 3678 8002
      3679 8002 3682 7993 3626 8003
TIME...MOT...LOC 0015Z 248DEG 24KT 3687 8019 3626 8059 

$$

NCC157-169-VAC089-141-180045-
/O.CON.KRNK.SV.W.0093.000000T0000Z-210718T0045Z/
Stokes NC-Rockingham NC-Henry VA-Patrick VA-
816 PM EDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR
STOKES...NORTHWESTERN ROCKINGHAM...WESTERN HENRY AND SOUTHEASTERN
PATRICK COUNTIES...

At 815 PM EDT, severe thunderstorms were located along a line
extending from near Endicott to near Siloam, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Walnut Cove...
Danbury...
Spencer...
Bassett...
Sandy Ridge...
King...
and Pine Hall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for DAMAGING WINDS. For your safety, move to an
interior room on the lowest floor of a sturdy building. Stay away
from windows.

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

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

&&

LAT...LON 3626 8045 3635 8045 3679 8004 3678 8002
      3679 8002 3682 7993 3626 8003
TIME...MOT...LOC 0015Z 248DEG 24KT 3687 8019 3626 8059 

HAIL...<.75IN
WIND...60MPH
 
$$

RR

982 
WWUS51 KRNK 180044
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
844 PM EDT Sat Jul 17 2021

NCC157-169-VAC089-141-180052-
/O.EXP.KRNK.SV.W.0093.000000T0000Z-210718T0045Z/
Stokes NC-Rockingham NC-Henry VA-Patrick VA-
844 PM EDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
STOKES...NORTHWESTERN ROCKINGHAM...WESTERN HENRY AND SOUTHEASTERN
PATRICK COUNTIES WILL EXPIRE AT 845 PM EDT...

The storms which prompted the warning continue. A new warning has 
been issued to replace it. Gusty winds and heavy rain are still 
possible with these thunderstorms.

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

Remember, a Severe Thunderstorm Warning still remains in effect for
Stokes, Henry, and Rockingham counties.

LAT...LON 3626 8045 3635 8045 3679 8004 3678 8002
      3679 8002 3682 7993 3626 8003
TIME...MOT...LOC 0042Z 248DEG 24KT 3693 7999 3632 8039 

$$

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 8:21 PM EDT	Special Weather Statement	RNK	Wythe	24 min
Jul 17, 12:01 PM EDT	Special Weather Statement	RNK	Bedford, Franklin	29 min
Jul 17, 12:26 PM EDT	Severe Thunderstorm Warning	RNK	Franklin	49 min
Jul 17, 12:47 PM EDT	Special Weather Statement	RNK	Bedford	28 min
Jul 17, 1:20 PM EDT	Special Weather Statement	RNK	Franklin	25 min
Jul 17, 1:33 PM EDT	Special Weather Statement	RNK	Bedford	42 min
Jul 17, 1:38 PM EDT	Special Weather Statement	RNK	Carroll	37 min
Jul 17, 1:43 PM EDT	Special Weather Statement	RNK	Campbell	47 min
Jul 17, 1:45 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Patrick	43 min
Jul 17, 1:56 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Campbell, City of Lynchburg	64 min
Jul 17, 2:11 PM EDT	Areal Flood Advisory	RNK	Carroll, Floyd, Patrick	3 hr
Jul 17, 2:14 PM EDT	Areal Flood Advisory	RNK	Appomattox, Campbell	3 hr
Jul 17, 2:37 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Campbell, Charlotte	53 min
Jul 17, 2:45 PM EDT	Special Weather Statement	RNK	Patrick	30 min
Jul 17, 2:47 PM EDT	Special Weather Statement	RNK	City of Martinsville	28 min
Jul 17, 2:53 PM EDT	Severe Thunderstorm Warning	RNK	Franklin, Henry, Pittsylvania, City of Martinsville	36 min
Jul 17, 2:59 PM EDT	Special Weather Statement	RNK	Franklin	31 min
Jul 17, 3:00 PM EDT	Special Weather Statement	RNK	Prince Edward	15 min
Jul 17, 3:16 PM EDT	Areal Flood Advisory	RNK	Franklin	2 hr
Jul 17, 3:24 PM EDT	Special Weather Statement	RNK	Franklin	36 min
Jul 17, 3:27 PM EDT	Special Weather Statement	RNK	Tazewell	48 min
Jul 17, 3:42 PM EDT	Special Weather Statement	RNK	City of Danville	48 min
Jul 17, 3:48 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	57 min
Jul 17, 3:52 PM EDT	Areal Flood Advisory	RNK	Pittsylvania, City of Danville	3 hr
Jul 17, 3:54 PM EDT	Special Weather Statement	RNK	Halifax	36 min
Jul 17, 4:11 PM EDT	Flash Flood Warning	RNK	Pittsylvania, City of Danville	3 hr
Jul 17, 4:17 PM EDT	Special Weather Statement	RNK	Bland, Giles, Smyth, Tazewell	43 min
Jul 17, 4:22 PM EDT	Special Weather Statement	RNK	Charlotte	23 min
Jul 17, 4:26 PM EDT	Special Weather Statement	RNK	Halifax	34 min
Jul 17, 4:47 PM EDT	Special Weather Statement	RNK	Charlotte	28 min
Jul 17, 5:01 PM EDT	Special Weather Statement	RNK	Alleghany, Bath, Craig, Giles, City of Covington	59 min
Jul 17, 5:26 PM EDT	Special Weather Statement	RNK	Appomattox	34 min
Jul 17, 5:45 PM EDT	Special Weather Statement	RNK	Floyd	30 min
Jul 17, 6:04 PM EDT	Special Weather Statement	RNK	Amherst, Botetourt, Montgomery, Roanoke, Rockbridge, City of Buena Vista and 3 more	56 min
Jul 17, 6:19 PM EDT	Special Weather Statement	RNK	Floyd	26 min
Jul 17, 6:25 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford, Botetourt, Rockbridge, City of Buena Vista, City of Lexington	65 min
Jul 17, 6:58 PM EDT	Special Weather Statement	RNK	City of Roanoke, City of Salem	47 min
Jul 17, 7:05 PM EDT	Special Weather Statement	RNK	Patrick	40 min
Jul 17, 7:10 PM EDT	Areal Flood Advisory	RNK	Carroll, Floyd, Grayson, Patrick	3 hr
Jul 17, 7:30 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Campbell, City of Lynchburg	39 min
Jul 17, 1:06 PM EDT	Special Weather Statement	RNK	Surry	39 min
Jul 17, 2:49 PM EDT	Special Weather Statement	RNK	Caswell	26 min
Jul 17, 2:56 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	49 min
Jul 17, 4:00 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	60 min
Jul 17, 5:00 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	60 min
Jul 17, 5:10 PM EDT	Special Weather Statement	RNK	Wilkes	35 min
Jul 17, 5:39 PM EDT	Special Weather Statement	RNK	Wilkes	36 min
Jul 17, 6:02 PM EDT	Special Weather Statement	RNK	Caswell	13 min
Jul 17, 6:08 PM EDT	Special Weather Statement	RNK	Alleghany, Surry, Watauga, Wilkes	67 min
Jul 17, 6:50 PM EDT	Areal Flood Advisory	RNK	Caswell, Rockingham	7 hr
Jul 17, 7:34 PM EDT	Special Weather Statement	RNK	Yadkin	26 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2021 Severe Thunderstorm Warnings in North Carolina, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.