Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 39, NWS Blacksburg, VA

May 4, 20214 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at May 4, 2021, 3:50 PM EDT for 4 counties in Virginia. It was in force for 55 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: May 4, 2021, 3:50 PM EDT (19:50 UTC)
Expired: May 4, 2021, 4:45 PM EDT
In force: 55 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Appomattox County, VA, Buckingham County, VA, Campbell County, VA, Charlotte County, VA

The radar

The Roanoke radar (KFCX), 144 km from the middle of the area, began a volume at 19:51 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
May 4, 4:11 PM EDT	TSTM WND DMG	2 Sse Oakville, VA	TREE DOWN ALONG OAKVILLE ROAD.
May 4, 4:24 PM EDT	TSTM WND DMG	1 N Andersonville, VA	TREE DOWN ALONG DIXIE HILL ROAD.
May 4, 4:24 PM EDT	TSTM WND DMG	4 Nne Hixburg, VA	TREE DOWN ALONG HOLIDAY LAKE ROAD.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 4, 1:51 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 7.8 hours before the alert went out and 73 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: 649 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 750 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

741 
WUUS51 KRNK 041950
SVRRNK
VAC011-029-031-037-042045-
/O.NEW.KRNK.SV.W.0039.210504T1950Z-210504T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
350 PM EDT Tue May 4 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Appomattox County in central Virginia...
  Northern Charlotte County in south central Virginia...
  Central Campbell County in central Virginia...
  Southern Buckingham County in central Virginia...

* Until 445 PM EDT.

* At 349 PM EDT, a severe thunderstorm was located near Rustburg,
  moving east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Appomattox...
  Red House...
  Concord...
  Rustburg...
  Pamplin City...
  Madisonville...
  and Appomattox National Historic Park.

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.

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 3733 7848 3733 7851 3738 7859 3734 7860
      3726 7868 3721 7869 3719 7868 3719 7864
      3716 7862 3714 7859 3715 7855 3712 7850
      3713 7925 3732 7928 3733 7903 3749 7874
      3747 7837
TIME...MOT...LOC 1949Z 261DEG 34KT 3724 7917 

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

VFJ

3 follow-up statements

400 
WWUS51 KRNK 042000
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
400 PM EDT Tue May 4 2021

VAC011-029-031-037-042045-
/O.CON.KRNK.SV.W.0039.000000T0000Z-210504T2045Z/
Appomattox VA-Charlotte VA-Campbell VA-Buckingham VA-
400 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR
APPOMATTOX...NORTHERN CHARLOTTE...NORTHEASTERN CAMPBELL AND SOUTHERN
BUCKINGHAM COUNTIES...

At 359 PM EDT, a severe thunderstorm was located near Rustburg,
moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Appomattox...
Red House...
Concord...
Rustburg...
Pamplin City...
Madisonville...
and Appomattox National Historic Park.

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.

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 3733 7848 3733 7851 3738 7859 3734 7860
      3726 7868 3721 7869 3719 7868 3719 7864
      3716 7862 3714 7859 3715 7855 3712 7850
      3713 7909 3733 7913 3733 7903 3749 7874
      3747 7837
TIME...MOT...LOC 1959Z 261DEG 34KT 3726 7904 

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

VFJ

681 
WWUS51 KRNK 042024
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
424 PM EDT Tue May 4 2021

VAC031-042034-
/O.CAN.KRNK.SV.W.0039.000000T0000Z-210504T2045Z/
Campbell VA-
424 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHEASTERN CAMPBELL COUNTY IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
central and south central Virginia.

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 3733 7848 3733 7851 3738 7859 3739 7860
      3734 7860 3726 7868 3721 7869 3719 7868
      3719 7864 3714 7859 3715 7855 3712 7851
      3713 7867 3713 7883 3720 7883 3721 7884
      3742 7888 3749 7874 3747 7837
TIME...MOT...LOC 2024Z 261DEG 34KT 3730 7874 

$$

VAC011-029-037-042045-
/O.CON.KRNK.SV.W.0039.000000T0000Z-210504T2045Z/
Appomattox VA-Charlotte VA-Buckingham VA-
424 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR
CENTRAL APPOMATTOX...NORTHERN CHARLOTTE AND SOUTHERN BUCKINGHAM
COUNTIES...

At 424 PM EDT, a severe thunderstorm was located over Evergreen, or
near Appomattox, moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Appomattox...
Red House...
Pamplin City...
Madisonville...
Abilene...
Appomattox National Historic Park...
and Sheppards.

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.

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 3733 7848 3733 7851 3738 7859 3739 7860
      3734 7860 3726 7868 3721 7869 3719 7868
      3719 7864 3714 7859 3715 7855 3712 7851
      3713 7867 3713 7883 3720 7883 3721 7884
      3742 7888 3749 7874 3747 7837
TIME...MOT...LOC 2024Z 261DEG 34KT 3730 7874 

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

VFJ

763 
WWUS51 KRNK 042036
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
436 PM EDT Tue May 4 2021

VAC011-029-037-042046-
/O.EXP.KRNK.SV.W.0039.000000T0000Z-210504T2045Z/
Appomattox VA-Charlotte VA-Buckingham VA-
436 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
CENTRAL APPOMATTOX...NORTHERN CHARLOTTE AND SOUTHERN BUCKINGHAM
COUNTIES WILL EXPIRE AT 445 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
central and south central Virginia.

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 3733 7848 3733 7851 3738 7859 3739 7860
      3734 7860 3726 7868 3721 7869 3719 7868
      3719 7864 3714 7859 3715 7855 3712 7851
      3713 7867 3713 7883 3720 7883 3721 7884
      3742 7888 3749 7874 3747 7837
TIME...MOT...LOC 2036Z 261DEG 34KT 3731 7863 

$$

VFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 12:05 PM EDT	Special Weather Statement	RNK	Grayson, Smyth, Tazewell	25 min
May 4, 12:31 PM EDT	Special Weather Statement	RNK	Bland, Grayson, Smyth, Tazewell, Wythe	29 min
May 4, 1:23 PM EDT	Special Weather Statement	RNK	Rockbridge, City of Buena Vista, City of Lexington	37 min
May 4, 1:30 PM EDT	Special Weather Statement	RNK	Bland, Craig, Floyd, Giles, Montgomery, Pulaski and 4 more	30 min
May 4, 1:41 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Montgomery, Pulaski, City of Radford	49 min
May 4, 1:53 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	37 min
May 4, 2:01 PM EDT	Special Weather Statement	RNK	Rockbridge	14 min
May 4, 2:10 PM EDT	Special Weather Statement	RNK	City of Roanoke, City of Salem	35 min
May 4, 2:12 PM EDT	Areal Flood Advisory	RNK	Bedford, Franklin, Montgomery, Roanoke, City of Roanoke, City of Salem	2 hr
May 4, 2:15 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Botetourt, Rockbridge, City of Lexington	60 min
May 4, 2:22 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Botetourt, Craig, Floyd, Franklin, Montgomery and 3 more	53 min
May 4, 2:53 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford, Botetourt, Campbell, Rockbridge, City of Buena Vista and 1 more	67 min
May 4, 3:05 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Amherst, Botetourt, Rockbridge, City of Lexington	40 min
May 4, 3:35 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Buckingham, Campbell	55 min
May 4, 4:11 PM EDT	Special Weather Statement	RNK	Buckingham	34 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.