Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 134, NWS Blacksburg, VA

August 10, 20215 counties in Virginia; Surry County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 10, 2021, 2:28 PM EDT for 5 counties in Virginia; Surry County, North Carolina. It was in force for 62 min. 1 report 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: Aug 10, 2021, 2:28 PM EDT (18:28 UTC)
Expired: Aug 10, 2021, 3:30 PM EDT
In force: 62 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Surry County, NC, Carroll County, VA, City of Galax, VA, Floyd County, VA, Grayson County, VA, Patrick County, VA

The radar

The Roanoke radar (KFCX), 61 km from the middle of the area, began a volume at 18:32 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
Aug 10, 2:31 PM EDT	HAIL 1	4 Se Dugspur, VA

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, 6.5 hours before the alert went out and 104 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: 1302 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 948 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

409 
WUUS51 KRNK 101828
SVRRNK
NCC171-VAC035-063-077-141-640-101930-
/O.NEW.KRNK.SV.W.0134.210810T1828Z-210810T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
228 PM EDT Tue Aug 10 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Northern Surry County in northwestern North Carolina...
  Southwestern Floyd County in southwestern Virginia...
  Carroll County in southwestern Virginia...
  The City of Galax in southwestern Virginia...
  Eastern Grayson County in southwestern Virginia...
  Central Patrick County in southwestern Virginia...

* Until 330 PM EDT.

* At 228 PM EDT, severe thunderstorms were located along a line
  extending from near Willis to near Galax, moving east at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Mount Airy...
  Galax...
  Flat Rock...
  Hillsville...
  Stuart...
  Fries...
  and Fancy Gap.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and 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 3654 8092 3656 8091 3656 8094 3676 8117
      3677 8116 3677 8109 3679 8108 3689 8050
      3674 8009 3672 8009 3640 8076
TIME...MOT...LOC 1828Z 264DEG 36KT 3682 8050 3668 8096 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RR

5 follow-up statements

402 
WWUS51 KRNK 101849
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
249 PM EDT Tue Aug 10 2021

VAC640-101859-
/O.CAN.KRNK.SV.W.0134.000000T0000Z-210810T1930Z/
City of Galax VA-
249 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
THE CITY OF GALAX IS CANCELLED...

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

LAT...LON 3665 8079 3670 8089 3670 8098 3677 8105
      3680 8102 3689 8050 3674 8009 3672 8009
      3649 8057
TIME...MOT...LOC 1849Z 264DEG 36KT 3684 8025 3670 8071 

$$

NCC171-VAC035-063-077-141-101930-
/O.CON.KRNK.SV.W.0134.000000T0000Z-210810T1930Z/
Surry NC-Floyd VA-Carroll VA-Grayson VA-Patrick VA-
249 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR
NORTHEASTERN SURRY...SOUTHWESTERN FLOYD...CARROLL...NORTHEASTERN
GRAYSON AND CENTRAL PATRICK COUNTIES...

At 249 PM EDT, severe thunderstorms were located along a line
extending from near Charity to near Fancy Gap, moving east at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Mount Airy...
Flat Rock...
Hillsville...
Stuart...
Fries...
Fancy Gap...
and Ararat.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for LARGE HAIL AND 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 3665 8079 3670 8089 3670 8098 3677 8105
      3680 8102 3689 8050 3674 8009 3672 8009
      3649 8057
TIME...MOT...LOC 1849Z 264DEG 36KT 3684 8025 3670 8071 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RR

593 
WWUS51 KRNK 101900
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
300 PM EDT Tue Aug 10 2021

VAC077-101910-
/O.CAN.KRNK.SV.W.0134.000000T0000Z-210810T1930Z/
Grayson VA-
300 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHEASTERN GRAYSON COUNTY IS CANCELLED...

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

LAT...LON 3671 8070 3689 8050 3674 8009 3672 8009
      3649 8057 3655 8066
TIME...MOT...LOC 1900Z 264DEG 36KT 3685 8015 3671 8061 

$$

NCC171-VAC035-063-141-101930-
/O.CON.KRNK.SV.W.0134.000000T0000Z-210810T1930Z/
Surry NC-Floyd VA-Carroll VA-Patrick VA-
300 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR
NORTHEASTERN SURRY...SOUTHWESTERN FLOYD...SOUTHEASTERN CARROLL AND
CENTRAL PATRICK COUNTIES...

At 300 PM EDT, severe thunderstorms were located along a line
extending from near Endicott to near Gladesboro, moving east at 40
mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Mount Airy...
Flat Rock...
Stuart...
Ararat...
Cana...
Woolwine...
and Willis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for LARGE HAIL AND 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 3671 8070 3689 8050 3674 8009 3672 8009
      3649 8057 3655 8066
TIME...MOT...LOC 1900Z 264DEG 36KT 3685 8015 3671 8061 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RR

005 
WWUS51 KRNK 101909
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
309 PM EDT Tue Aug 10 2021

NCC171-VAC035-101919-
/O.CAN.KRNK.SV.W.0134.000000T0000Z-210810T1930Z/
Surry NC-Carroll VA-
309 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHEASTERN SURRY AND SOUTHEASTERN CARROLL COUNTIES IS CANCELLED...

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

LAT...LON 3655 8051 3660 8054 3665 8051 3665 8049
      3666 8049 3668 8046 3670 8045 3672 8048
      3685 8039 3674 8009 3672 8009 3670 8013
      3655 8045
TIME...MOT...LOC 1909Z 264DEG 36KT 3686 8005 3672 8051 

$$

VAC063-141-101930-
/O.CON.KRNK.SV.W.0134.000000T0000Z-210810T1930Z/
Floyd VA-Patrick VA-
309 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR
SOUTH CENTRAL FLOYD AND CENTRAL PATRICK COUNTIES...

At 309 PM EDT, severe thunderstorms were located along a line
extending from near Fairy Stone State Park to Laurel Fork, moving
east at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Stuart...
Woolwine...
Ararat...
Meadows Of Dan...
Mabry Mill...
Buffalo Ridge...
and Rocky Knob Recreation Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for LARGE HAIL AND 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 3655 8051 3660 8054 3665 8051 3665 8049
      3666 8049 3668 8046 3670 8045 3672 8048
      3685 8039 3674 8009 3672 8009 3670 8013
      3655 8045
TIME...MOT...LOC 1909Z 264DEG 36KT 3686 8005 3672 8051 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RR

190 
WWUS51 KRNK 101922
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
322 PM EDT Tue Aug 10 2021

VAC063-101932-
/O.CAN.KRNK.SV.W.0134.000000T0000Z-210810T1930Z/
Floyd VA-
322 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
SOUTH CENTRAL FLOYD COUNTY IS CANCELLED...

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

LAT...LON 3674 8009 3672 8009 3670 8013 3655 8045
      3682 8031
TIME...MOT...LOC 1922Z 264DEG 36KT 3687 7990 3673 8036 

$$

VAC141-101930-
/O.CON.KRNK.SV.W.0134.000000T0000Z-210810T1930Z/
Patrick VA-
322 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR
CENTRAL PATRICK COUNTY...

At 322 PM EDT, severe thunderstorms were located along a line
extending from near Sydnorsville to near Mabry Mill, moving east at
40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Stuart...
Woolwine...
Buffalo Ridge...
and Patrick Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for LARGE HAIL AND 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 3674 8009 3672 8009 3670 8013 3655 8045
      3682 8031
TIME...MOT...LOC 1922Z 264DEG 36KT 3687 7990 3673 8036 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RR

076 
WWUS51 KRNK 101925
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
325 PM EDT Tue Aug 10 2021

VAC141-101935-
/O.EXP.KRNK.SV.W.0134.000000T0000Z-210810T1930Z/
Patrick VA-
325 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
CENTRAL PATRICK COUNTY WILL EXPIRE AT 330 PM EDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 3674 8009 3672 8009 3670 8013 3655 8045
      3682 8031
TIME...MOT...LOC 1925Z 264DEG 36KT 3687 7988 3673 8034 

$$

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 11:01 AM EDT	Special Weather Statement	RNK	Bland	29 min
Aug 10, 11:35 AM EDT	Special Weather Statement	RNK	Pulaski	40 min
Aug 10, 12:30 PM EDT	Special Weather Statement	RNK	Floyd, Pulaski, City of Radford	45 min
Aug 10, 12:32 PM EDT	Special Weather Statement	RNK	Smyth	28 min
Aug 10, 12:43 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Montgomery, Pulaski, City of Radford	46 min
Aug 10, 1:08 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	22 min
Aug 10, 1:29 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	61 min
Aug 10, 1:56 PM EDT	Special Weather Statement	RNK	City of Roanoke, City of Salem	49 min
Aug 10, 2:20 PM EDT	Special Weather Statement	RNK	Carroll, Patrick, City of Galax	25 min
Aug 10, 2:22 PM EDT	Special Weather Statement	RNK	Pittsylvania	23 min
Aug 10, 2:40 PM EDT	Special Weather Statement	RNK	Bedford	35 min
Aug 10, 2:44 PM EDT	Special Weather Statement	RNK	Buckingham	31 min
Aug 10, 2:51 PM EDT	Special Weather Statement	RNK	Franklin	24 min
Aug 10, 2:57 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Campbell, Franklin, Pittsylvania	63 min
Aug 10, 3:10 PM EDT	Special Weather Statement	RNK	Patrick	35 min
Aug 10, 3:11 PM EDT	Special Weather Statement	RNK	Buckingham	34 min
Aug 10, 3:44 PM EDT	Special Weather Statement	RNK	Campbell	31 min
Aug 10, 3:58 PM EDT	Special Weather Statement	RNK	Buckingham	32 min
Aug 10, 4:06 PM EDT	Special Weather Statement	RNK	Appomattox, Campbell	24 min
Aug 10, 4:14 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Campbell, Charlotte, Halifax, Pittsylvania	61 min
Aug 10, 4:19 PM EDT	Severe Thunderstorm Warning	RNK	Buckingham	56 min
Aug 10, 4:36 PM EDT	Special Weather Statement	RNK	Wythe	24 min
Aug 10, 4:39 PM EDT	Special Weather Statement	RNK	Nelson	36 min
Aug 10, 4:53 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Buckingham	67 min
Aug 10, 5:08 PM EDT	Special Weather Statement	RNK	Rockbridge	37 min
Aug 10, 5:11 PM EDT	Special Weather Statement	RNK	Charlotte	49 min
Aug 10, 5:12 PM EDT	Special Weather Statement	RNK	Cumberland	48 min
Aug 10, 5:26 PM EDT	Areal Flood Advisory	RNK	Buckingham	3 hr
Aug 10, 5:27 PM EDT	Special Weather Statement	RNK	Halifax	48 min
Aug 10, 5:33 PM EDT	Special Weather Statement	RNK	Buckingham	57 min
Aug 10, 5:39 PM EDT	Severe Thunderstorm Warning	RNK	Charlotte	51 min
Aug 10, 6:42 PM EDT	Special Weather Statement	RNK	Halifax	33 min
Aug 10, 6:57 PM EDT	Special Weather Statement	RNK	Halifax	48 min
Aug 10, 7:04 PM EDT	Severe Thunderstorm Warning	RNK	Charlotte, Halifax	56 min
Aug 10, 7:59 PM EDT	Special Weather Statement	RNK	Halifax	31 min
Aug 10, 1:42 PM EDT	Special Weather Statement	RNK	Watauga	48 min
Aug 10, 2:32 PM EDT	Special Weather Statement	RNK	Alleghany	28 min
Aug 10, 3:05 PM EDT	Special Weather Statement	RNK	Surry	25 min
Aug 10, 3:33 PM EDT	Special Weather Statement	RNK	Stokes, Wilkes, Yadkin	42 min
Aug 10, 3:37 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes, Surry, Wilkes, Yadkin	53 min
Aug 10, 5:03 PM EDT	Special Weather Statement	RNK	Watauga	27 min
Aug 10, 5:49 PM EDT	Special Weather Statement	RNK	Caswell	26 min
Aug 10, 6:12 PM EDT	Special Weather Statement	RNK	Caswell	48 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.