Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 34, NWS Blacksburg, VA

May 4, 20215 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at May 4, 2021, 2:15 PM EDT for 5 counties in Virginia. It was in force for 60 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: May 4, 2021, 2:15 PM EDT (18:15 UTC)
Expired: May 4, 2021, 3:15 PM EDT
In force: 60 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Alleghany County, VA, Bath County, VA, Botetourt County, VA, City of Lexington, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 126 km from the middle of the area, began a volume at 18:15 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, 3:10 PM EDT	HAIL 0.7	1 N Vesuvius, VA	HAIL UP TO DIME SIZE IN DIAMETER.

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, 6.3 hours before the alert went out and 74 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.

884 
WUUS51 KRNK 041815
SVRRNK
VAC005-017-023-163-678-041915-
/O.NEW.KRNK.SV.W.0034.210504T1815Z-210504T1915Z/

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

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Northeastern Alleghany County in west central Virginia...
  The City of Lexington in west central Virginia...
  Rockbridge County in west central Virginia...
  Southeastern Bath County in west central Virginia...
  North central Botetourt County in west central Virginia...

* Until 315 PM EDT.

* At 215 PM EDT, a severe thunderstorm was located over Longdale
  Furnace, or near Clifton Forge, moving northeast at 30 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...
  Lexington...
  Clifton Forge...
  Goshen...
  Collierstown...
  Rockbridge Baths...
  Millboro...
  and Iron Gate.

This includes The following Location VMI.
 
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.

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 3792 7919 3787 7915 3785 7915 3784 7916
      3783 7915 3780 7917 3779 7921 3781 7923
      3778 7928 3768 7973 3786 7985 3804 7941
TIME...MOT...LOC 1815Z 247DEG 26KT 3779 7971 

HAIL...1.00IN
WIND...60MPH
 
$$

VFJ

3 follow-up statements

601 
WWUS51 KRNK 041829
SVSRNK

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

VAC023-041839-
/O.CAN.KRNK.SV.W.0034.000000T0000Z-210504T1915Z/
Botetourt VA-
229 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTH CENTRAL BOTETOURT 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, south central and west 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 3792 7919 3787 7915 3785 7915 3784 7916
      3783 7915 3780 7917 3779 7921 3781 7923
      3778 7928 3773 7959 3791 7974 3804 7941
TIME...MOT...LOC 1829Z 247DEG 26KT 3783 7959 

$$

VAC005-017-163-678-041915-
/O.CON.KRNK.SV.W.0034.000000T0000Z-210504T1915Z/
Alleghany VA-City of Lexington VA-Rockbridge VA-Bath VA-
229 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR
EAST CENTRAL ALLEGHANY...ROCKBRIDGE AND SOUTHEASTERN BATH COUNTIES IN
WEST CENTRAL VIRGINIA AND THE CITY OF LEXINGTON...

At 229 PM EDT, a severe thunderstorm was located near Collierstown,
moving northeast at 30 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...
Lexington...
Goshen...
Collierstown...
Rockbridge Baths...
Millboro...
Nimrod Hall...
and Cornwall.

This includes The following Location VMI.
 
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.

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 3792 7919 3787 7915 3785 7915 3784 7916
      3783 7915 3780 7917 3779 7921 3781 7923
      3778 7928 3773 7959 3791 7974 3804 7941
TIME...MOT...LOC 1829Z 247DEG 26KT 3783 7959 

HAIL...1.00IN
WIND...60MPH
 
$$

VFJ

553 
WWUS51 KRNK 041850
SVSRNK

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

VAC005-017-678-041900-
/O.CAN.KRNK.SV.W.0034.000000T0000Z-210504T1915Z/
Alleghany VA-City of Lexington VA-Bath VA-
250 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
EAST CENTRAL ALLEGHANY AND SOUTHEASTERN BATH COUNTIES IN WEST CENTRAL
VIRGINIA AND THE CITY OF LEXINGTON 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, south central and west 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 3792 7919 3787 7915 3785 7915 3784 7916
      3783 7915 3780 7917 3779 7921 3781 7923
      3778 7928 3777 7933 3786 7949 3804 7941
TIME...MOT...LOC 1850Z 247DEG 26KT 3789 7941 

$$

VAC163-041915-
/O.CON.KRNK.SV.W.0034.000000T0000Z-210504T1915Z/
Rockbridge VA-
250 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR
NORTHEASTERN ROCKBRIDGE COUNTY...

At 250 PM EDT, a severe thunderstorm was located over Rockbridge
Baths, moving northeast at 30 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...
Rockbridge Baths...
Cornwall...
Fairfield...
Brownsburg...
and Vesuvius.

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.

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 3792 7919 3787 7915 3785 7915 3784 7916
      3783 7915 3780 7917 3779 7921 3781 7923
      3778 7928 3777 7933 3786 7949 3804 7941
TIME...MOT...LOC 1850Z 247DEG 26KT 3789 7941 

HAIL...1.00IN
WIND...60MPH
 
$$

VFJ

099 
WWUS51 KRNK 041906
SVSRNK

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

VAC163-041916-
/O.EXP.KRNK.SV.W.0034.000000T0000Z-210504T1915Z/
Rockbridge VA-
306 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHEASTERN ROCKBRIDGE COUNTY WILL EXPIRE AT 315 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, south central and west 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.

Remember, a Severe Thunderstorm Warning still remains in effect for
Northern Rockbridge County 345 PM.

LAT...LON 3792 7919 3787 7915 3785 7915 3784 7916
      3783 7915 3780 7917 3779 7921 3781 7923
      3778 7928 3777 7933 3786 7949 3804 7941
TIME...MOT...LOC 1906Z 247DEG 26KT 3793 7930 

$$

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, 2:22 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, 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.