Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 137, NWS Blacksburg, VA

August 10, 20215 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 10, 2021, 4:14 PM EDT for 5 counties in Virginia. It was in force for 61 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, 4:14 PM EDT (20:14 UTC)
Expired: Aug 10, 2021, 5:15 PM EDT
In force: 61 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Appomattox County, VA, Campbell County, VA, Charlotte County, VA, Halifax County, VA, Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 132 km from the middle of the area, began a volume at 20:16 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, 4:30 PM EDT	TSTM WND DMG	Gladys, VA	ABOUT 10 TREES DOWN THROUGHOUT THE GLADYS AND YELLOW BRANCH AREAS. TIME ESTIMATED FROM RADAR.

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, 8.2 hours before the alert went out and 61 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.

956 
WUUS51 KRNK 102014
SVRRNK
VAC011-031-037-083-143-102115-
/O.NEW.KRNK.SV.W.0137.210810T2014Z-210810T2115Z/

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

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Appomattox County in central Virginia...
  Northwestern Charlotte County in south central Virginia...
  Campbell County in central Virginia...
  Northeastern Pittsylvania County in south central Virginia...
  North central Halifax County in south central Virginia...

* Until 515 PM EDT.

* At 414 PM EDT, severe thunderstorms were located along a line
  extending from near Concord to Altavista, 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...
  Altavista...
  Appomattox...
  Hurt...
  Brookneal...
  Red House...
  Concord...
  and Rustburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds, as well as
deadly cloud to ground lightning. 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 3732 7863 3726 7868 3721 7869 3719 7868
      3719 7865 3696 7892 3713 7937 3739 7907
      3739 7906 3741 7905 3739 7860 3734 7860
TIME...MOT...LOC 2014Z 279DEG 15KT 3735 7904 3714 7929 

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

$$

RR

4 follow-up statements

700 
WWUS51 KRNK 102037
SVSRNK

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

VAC143-102046-
/O.CAN.KRNK.SV.W.0137.000000T0000Z-210810T2115Z/
Pittsylvania VA-
437 PM EDT Tue Aug 10 2021

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

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

LAT...LON 3726 7868 3721 7869 3719 7868 3719 7865
      3696 7892 3704 7910 3706 7909 3709 7912
      3707 7917 3709 7920 3712 7921 3710 7923
      3712 7924 3741 7899 3739 7860 3734 7860
TIME...MOT...LOC 2036Z 279DEG 15KT 3734 7893 3713 7918 

$$

VAC011-031-037-083-102115-
/O.CON.KRNK.SV.W.0137.000000T0000Z-210810T2115Z/
Appomattox VA-Charlotte VA-Campbell VA-Halifax VA-
437 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR
APPOMATTOX...NORTHWESTERN CHARLOTTE...CAMPBELL AND NORTH CENTRAL
HALIFAX COUNTIES...

At 436 PM EDT, severe thunderstorms were located along a line
extending from Spout Spring to Hodges, moving east at 15 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...
Appomattox...
Brookneal...
Red House...
Concord...
Rustburg...
Pamplin City...
and Madisonville.

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 3726 7868 3721 7869 3719 7868 3719 7865
      3696 7892 3704 7910 3706 7909 3709 7912
      3707 7917 3709 7920 3712 7921 3710 7923
      3712 7924 3741 7899 3739 7860 3734 7860
TIME...MOT...LOC 2036Z 279DEG 15KT 3734 7893 3713 7918 

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

$$

RR

587 
WWUS51 KRNK 102051
SVSRNK

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

VAC011-031-037-083-102115-
/O.CON.KRNK.SV.W.0137.000000T0000Z-210810T2115Z/
Appomattox VA-Charlotte VA-Campbell VA-Halifax VA-
451 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR
SOUTHERN APPOMATTOX...NORTHWESTERN CHARLOTTE...SOUTHEASTERN CAMPBELL
AND NORTH CENTRAL HALIFAX COUNTIES...

At 450 PM EDT, severe thunderstorms were located along a line
extending from near Spout Spring to near Long Island, moving east at
15 mph.

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

SOURCE...VDOT reports multiple trees down in the Gladys and Yellow 
         Branch areas.

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

Locations impacted include...
Appomattox...
Brookneal...
Red House...
Pamplin City...
Madisonville...
Appomattox National Historic Park...
and Long Island.

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 3726 7868 3721 7869 3719 7868 3719 7865
      3696 7892 3704 7910 3706 7909 3709 7912
      3741 7892 3739 7860 3734 7860
TIME...MOT...LOC 2050Z 279DEG 15KT 3733 7887 3712 7912 

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

$$

RR

281 
WWUS51 KRNK 102106
SVSRNK

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

VAC011-031-037-083-102115-
/O.CON.KRNK.SV.W.0137.000000T0000Z-210810T2115Z/
Appomattox VA-Charlotte VA-Campbell VA-Halifax VA-
506 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR
SOUTHEASTERN APPOMATTOX...NORTHWESTERN CHARLOTTE...SOUTHEASTERN
CAMPBELL AND NORTHERN HALIFAX COUNTIES...

At 506 PM EDT, severe thunderstorms were located along a line
extending from Evergreen to near Long Island, moving east at 15 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...
Appomattox...
Brookneal...
Red House...
Pamplin City...
Madisonville...
Mike...
and Appomattox National Historic Park.

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 3726 7868 3721 7869 3719 7868 3719 7865
      3696 7892 3702 7905 3740 7881 3739 7860
      3734 7860
TIME...MOT...LOC 2106Z 279DEG 15KT 3732 7880 3711 7905 

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

$$

RR

872 
WWUS51 KRNK 102110
SVSRNK

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

VAC011-031-037-083-102120-
/O.EXP.KRNK.SV.W.0137.000000T0000Z-210810T2115Z/
Appomattox VA-Charlotte VA-Campbell VA-Halifax VA-
510 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
SOUTHEASTERN APPOMATTOX...NORTHWESTERN CHARLOTTE...SOUTHEASTERN
CAMPBELL AND NORTHERN HALIFAX COUNTIES WILL EXPIRE AT 515 PM EDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with these thunderstorms.

LAT...LON 3726 7868 3721 7869 3719 7868 3719 7865
      3696 7892 3702 7905 3740 7881 3739 7860
      3734 7860
TIME...MOT...LOC 2110Z 279DEG 15KT 3732 7879 3711 7904 

$$

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, 4:19 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

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.