Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 38, NWS Blacksburg, VA

May 4, 20214 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at May 4, 2021, 3:35 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, 3:35 PM EDT (19:35 UTC)
Expired: May 4, 2021, 4:30 PM EDT
In force: 55 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Roanoke radar (KFCX), 151 km from the middle of the area, began a volume at 19:38 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, 3:38 PM EDT	TSTM WND DMG	3 Ese Amherst, VA	TWO LARGE TREES DOWNED. SOME LIMBS DOWNED AS WELL.
May 4, 4:12 PM EDT	TSTM WND DMG	3 Sw Tower Hill, VA	TREE DOWN ALONG LIBERTY CHAPEL ROAD.
May 4, 4:15 PM EDT	TSTM WND DMG	5 Nne Centenary, VA	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 5 NNE CENTENARY. TREES AND POWER LINES DOWN NEAR ROUTE 20.

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, 7.6 hours before the alert went out and 82 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.

225 
WUUS51 KRNK 041935
SVRRNK
VAC009-011-029-031-042030-
/O.NEW.KRNK.SV.W.0038.210504T1935Z-210504T2030Z/

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

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Northwestern Appomattox County in central Virginia...
  North central Campbell County in central Virginia...
  Northern Buckingham County in central Virginia...
  Central Amherst County in central Virginia...

* Until 430 PM EDT.

* At 334 PM EDT, a severe thunderstorm was located near Amherst,
  moving east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Amherst...
  Forks Of Buffalo...
  Bent Creek...
  Concord...
  Clifford...
  Stonewall...
  and Tower Hill.

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 3732 7902 3771 7930 3772 7906 3770 7900
      3755 7890 3753 7884 3756 7882 3759 7883
      3760 7881 3763 7882 3764 7872 3770 7869
      3768 7864 3772 7865 3776 7861 3776 7851
      3780 7849 3776 7847 3773 7836 3770 7835
TIME...MOT...LOC 1934Z 248DEG 29KT 3762 7910 

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

VFJ

3 follow-up statements

057 
WWUS51 KRNK 041956
SVSRNK

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

VAC009-011-029-031-042030-
/O.CON.KRNK.SV.W.0038.000000T0000Z-210504T2030Z/
Appomattox VA-Campbell VA-Buckingham VA-Amherst VA-
356 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR
NORTHWESTERN APPOMATTOX...NORTH CENTRAL CAMPBELL...NORTHERN
BUCKINGHAM AND SOUTHEASTERN AMHERST COUNTIES...

At 356 PM EDT, a severe thunderstorm was located near Shipman, or 8
miles east of Clifford, moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Amherst...
Bent Creek...
Concord...
Clifford...
Stonewall...
Tower Hill...
and Falconerville.

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 3732 7902 3752 7915 3770 7900 3755 7890
      3753 7884 3756 7882 3759 7883 3760 7881
      3763 7882 3764 7872 3770 7869 3768 7864
      3772 7865 3776 7861 3776 7851 3780 7849
      3776 7847 3773 7836 3770 7835
TIME...MOT...LOC 1956Z 248DEG 29KT 3769 7889 

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

VFJ

728 
WWUS51 KRNK 042012
SVSRNK

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

VAC009-031-042022-
/O.CAN.KRNK.SV.W.0038.000000T0000Z-210504T2030Z/
Campbell VA-Amherst VA-
412 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTH CENTRAL CAMPBELL AND SOUTHEASTERN AMHERST COUNTIES 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 3744 7881 3753 7889 3754 7882 3757 7882
      3759 7883 3760 7881 3763 7882 3764 7872
      3770 7869 3768 7866 3768 7864 3772 7865
      3776 7861 3776 7851 3780 7849 3776 7847
      3773 7836 3770 7835
TIME...MOT...LOC 2012Z 248DEG 29KT 3774 7873 

$$

VAC011-029-042030-
/O.CON.KRNK.SV.W.0038.000000T0000Z-210504T2030Z/
Appomattox VA-Buckingham VA-
412 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR
NORTH CENTRAL APPOMATTOX AND NORTHERN BUCKINGHAM COUNTIES...

At 412 PM EDT, a severe thunderstorm was located near Schuyler, or 15
miles north of Bent Creek, moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Bent Creek...
Wingina...
Tower Hill...
Centenary...
and Hardware.

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 3744 7881 3753 7889 3754 7882 3757 7882
      3759 7883 3760 7881 3763 7882 3764 7872
      3770 7869 3768 7866 3768 7864 3772 7865
      3776 7861 3776 7851 3780 7849 3776 7847
      3773 7836 3770 7835
TIME...MOT...LOC 2012Z 248DEG 29KT 3774 7873 

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

VFJ

116 
WWUS51 KRNK 042023
SVSRNK

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

VAC011-029-042033-
/O.EXP.KRNK.SV.W.0038.000000T0000Z-210504T2030Z/
Appomattox VA-Buckingham VA-
423 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTH CENTRAL APPOMATTOX AND NORTHERN BUCKINGHAM COUNTIES WILL EXPIRE
AT 430 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

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 3744 7881 3753 7889 3754 7882 3757 7882
      3759 7883 3760 7881 3763 7882 3764 7872
      3770 7869 3768 7866 3768 7864 3772 7865
      3776 7861 3776 7851 3780 7849 3776 7847
      3773 7836 3770 7835
TIME...MOT...LOC 2023Z 248DEG 29KT 3777 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, 3:50 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Buckingham, Campbell, Charlotte	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.