Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 139, NWS Blacksburg, VA

August 10, 2021Amherst County, Appomattox County, Buckingham County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 10, 2021, 4:53 PM EDT for Amherst County, Appomattox County, Buckingham County, Virginia. It was in force for 67 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, 4:53 PM EDT (20:53 UTC)
Expired: Aug 10, 2021, 6:00 PM EDT
In force: 67 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Amherst County, VA, Appomattox County, VA, Buckingham County, VA

The radar

The Roanoke radar (KFCX), 146 km from the middle of the area, began a volume at 20:53 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, 5:00 PM EDT	TSTM WND DMG	Bent Creek, VA	NUMEROUS TREES DOWN IN THE BENT CREEK AREA.

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

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 8.9 hours before the alert went out and 77 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: 222 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1006 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

821 
WUUS51 KRNK 102053
SVRRNK
VAC009-011-029-102200-
/O.NEW.KRNK.SV.W.0139.210810T2053Z-210810T2200Z/

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

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Northern Appomattox County in central Virginia...
  Western Buckingham County in central Virginia...
  Northeastern Amherst County in central Virginia...

* Until 600 PM EDT.

* At 453 PM EDT, severe thunderstorms were located along a line
  extending from Lowesville to Oakville, 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...
  Amherst...
  Bent Creek...
  Clifford...
  Toga...
  Riverville...
  Andersonville...
  and New Glasgow.

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 3739 7851 3740 7892 3776 7917 3778 7908
      3772 7907 3770 7898 3755 7890 3753 7884
      3756 7882 3758 7883 3760 7881 3763 7882
      3764 7880 3764 7872 3770 7869 3768 7866
      3768 7864 3770 7865 3773 7864
TIME...MOT...LOC 2053Z 255DEG 16KT 3772 7910 3741 7885 

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

$$

RR

4 follow-up statements

162 
WWUS51 KRNK 102113
SVSRNK

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

VAC009-102123-
/O.CAN.KRNK.SV.W.0139.000000T0000Z-210810T2200Z/
Amherst VA-
513 PM EDT Tue Aug 10 2021

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

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

LAT...LON 3739 7851 3740 7879 3753 7888 3754 7882
      3757 7882 3758 7883 3760 7881 3763 7882
      3764 7880 3764 7872 3768 7870 3768 7869
      3770 7869 3768 7866 3768 7864 3770 7865
      3773 7864
TIME...MOT...LOC 2113Z 255DEG 16KT 3774 7900 3743 7875 

$$

VAC011-029-102200-
/O.CON.KRNK.SV.W.0139.000000T0000Z-210810T2200Z/
Appomattox VA-Buckingham VA-
513 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR
NORTHEASTERN APPOMATTOX AND WESTERN BUCKINGHAM COUNTIES...

At 513 PM EDT, severe thunderstorms were located along a line
extending from near Lowesville to near Appomattox National Historic
Park, 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...
Bent Creek...
Wingina...
Toga...
Tower Hill...
and Andersonville.

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 3739 7851 3740 7879 3753 7888 3754 7882
      3757 7882 3758 7883 3760 7881 3763 7882
      3764 7880 3764 7872 3768 7870 3768 7869
      3770 7869 3768 7866 3768 7864 3770 7865
      3773 7864
TIME...MOT...LOC 2113Z 255DEG 16KT 3774 7900 3743 7875 

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

$$

RR

557 
WWUS51 KRNK 102128
SVSRNK

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

VAC011-029-102200-
/O.CON.KRNK.SV.W.0139.000000T0000Z-210810T2200Z/
Appomattox VA-Buckingham VA-
528 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR
NORTHEASTERN APPOMATTOX AND WESTERN BUCKINGHAM COUNTIES...

At 528 PM EDT, severe thunderstorms were located along a line
extending from near Shipman to near Toga, 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...
Wingina...
Toga...
and Andersonville.

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 3739 7851 3740 7871 3757 7882 3758 7883
      3760 7881 3763 7882 3764 7880 3764 7872
      3768 7870 3768 7869 3770 7869 3768 7866
      3768 7864 3770 7865 3773 7864
TIME...MOT...LOC 2128Z 255DEG 16KT 3776 7893 3745 7868 

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

$$

RR

602 
WWUS51 KRNK 102142
SVSRNK

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

VAC011-102152-
/O.CAN.KRNK.SV.W.0139.000000T0000Z-210810T2200Z/
Appomattox VA-
542 PM EDT Tue Aug 10 2021

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

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

LAT...LON 3739 7855 3759 7862 3763 7860 3739 7851
TIME...MOT...LOC 2142Z 255DEG 16KT 3778 7886 3747 7861 

$$

VAC029-102200-
/O.CON.KRNK.SV.W.0139.000000T0000Z-210810T2200Z/
Buckingham VA-
542 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR
SOUTH CENTRAL BUCKINGHAM COUNTY...

At 542 PM EDT, severe thunderstorms were located along a line
extending from near Shipman to near Andersonville, 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...
Andersonville.

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 3739 7855 3759 7862 3763 7860 3739 7851
TIME...MOT...LOC 2142Z 255DEG 16KT 3778 7886 3747 7861 

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

$$

RR

987 
WWUS51 KRNK 102151
SVSRNK

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

VAC029-102201-
/O.EXP.KRNK.SV.W.0139.000000T0000Z-210810T2200Z/
Buckingham VA-
551 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
SOUTH CENTRAL BUCKINGHAM COUNTY WILL EXPIRE AT 600 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with these thunderstorms.

LAT...LON 3739 7855 3759 7862 3763 7860 3739 7851
TIME...MOT...LOC 2151Z 255DEG 16KT 3779 7882 3748 7857 

$$

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, 2:28 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Grayson, Patrick, City of Galax	62 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, 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

Nearby

Severe Thunderstorm Warnings in Virginia, 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.