Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 33, NWS Blacksburg, VA

May 4, 20215 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at May 4, 2021, 1:41 PM EDT for 5 counties in Virginia. It was in force for 49 min. 7 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, 1:41 PM EDT (17:41 UTC)
Expired: May 4, 2021, 2:30 PM EDT
In force: 49 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Carroll County, VA, City of Radford, VA, Floyd County, VA, Montgomery County, VA, Pulaski County, VA

The radar

The Roanoke radar (KFCX), 20 km from the middle of the area, began a volume at 17:43 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, 1:57 PM EDT	TSTM WND DMG	Mc Coy, VA	TREE BLOWN DOWN ACROSS BIG FALLS ROAD.
May 4, 1:58 PM EDT	TSTM WND DMG	1 Ese Mc Coy, VA	TREE BLOWN DOWN ACROSS MCCOY ROAD BETWEEN TIPPLE ROAD AND CENTENNIAL ROAD.
May 4, 1:58 PM EDT	TSTM WND DMG	2 Ese Mc Coy, VA	LEAN-TO DISPLAY CONSTRUCTED WITH SHEET METAL AND LUMBER AT THE INTERSECTION OF CENTENNIAL ROAD AND MCCOY ROAD DESTROYED.
May 4, 1:58 PM EDT	HAIL 0.7	Graysontown, VA
May 4, 2:00 PM EDT	TSTM WND DMG	2 W Prices Fork, VA	TREE BLOWN DOWN ON A HOUSE IN THE 5000 BLOCK OF LONG SHOP ROAD.
May 4, 2:05 PM EDT	TSTM WND DMG	1 Se Blacksburg, VA	LARGE TREE DOWNED ON RESIDENCE ALONG HEMLOCK STREET.
May 4, 2:12 PM EDT	TSTM WND DMG	3 Wsw Shawsville, VA	ONE TREE DOWN.

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, 5.7 hours before the alert went out and 88 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.

907 
WUUS51 KRNK 041741
SVRRNK
VAC035-063-121-155-750-041830-
/O.NEW.KRNK.SV.W.0033.210504T1741Z-210504T1830Z/

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

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Pulaski County in southwestern Virginia...
  The City of Radford in southwestern Virginia...
  Northern Floyd County in southwestern Virginia...
  Northeastern Carroll County in southwestern Virginia...
  Montgomery County in southwestern Virginia...

* Until 230 PM EDT.

* At 141 PM EDT, a severe thunderstorm was located near Claytor Lake
  State Park, or near Allisonia, moving northeast at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Blacksburg...
  Christiansburg...
  Radford...
  Pulaski...
  Dublin...
  Pilot...
  and Shawsville.

This includes The following Location Virginia Tech.
 
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 3726 8058 3728 8048 3735 8035 3713 8017
      3711 8018 3711 8016 3706 8012 3704 8011
      3685 8073 3688 8075 3688 8074 3704 8090
      3711 8093
TIME...MOT...LOC 1741Z 237DEG 23KT 3700 8066 

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

VFJ

3 follow-up statements

237 
WWUS51 KRNK 041755
SVSRNK

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

VAC035-041805-
/O.CAN.KRNK.SV.W.0033.000000T0000Z-210504T1830Z/
Carroll VA-
155 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHEASTERN CARROLL 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
south central, southwestern 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 3726 8058 3728 8048 3735 8035 3713 8017
      3711 8018 3711 8016 3706 8012 3704 8011
      3689 8060 3715 8083
TIME...MOT...LOC 1755Z 237DEG 23KT 3704 8058 

$$

VAC063-121-155-750-041830-
/O.CON.KRNK.SV.W.0033.000000T0000Z-210504T1830Z/
Pulaski VA-City of Radford VA-Floyd VA-Montgomery VA-
155 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR
EASTERN PULASKI...NORTHERN FLOYD AND MONTGOMERY COUNTIES AND THE CITY
OF RADFORD...

At 155 PM EDT, a severe thunderstorm was located over Graysontown, or
near Radford, moving northeast at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Blacksburg...
Christiansburg...
Radford...
Pulaski...
Dublin...
Pilot...
and Shawsville.

This includes The following Location Virginia Tech.
 
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 3726 8058 3728 8048 3735 8035 3713 8017
      3711 8018 3711 8016 3706 8012 3704 8011
      3689 8060 3715 8083
TIME...MOT...LOC 1755Z 237DEG 23KT 3704 8058 

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

VFJ

742 
WWUS51 KRNK 041811
SVSRNK

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

VAC155-750-041821-
/O.CAN.KRNK.SV.W.0033.000000T0000Z-210504T1830Z/
Pulaski VA-City of Radford VA-
211 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
EASTERN PULASKI  AND THE CITY OF RADFORD 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
south central, southwestern 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 3719 8054 3719 8052 3720 8052 3720 8054
      3725 8058 3728 8048 3735 8035 3713 8017
      3711 8018 3711 8016 3704 8011 3702 8018
      3696 8038
TIME...MOT...LOC 1811Z 237DEG 23KT 3710 8047 

$$

VAC063-121-041830-
/O.CON.KRNK.SV.W.0033.000000T0000Z-210504T1830Z/
Floyd VA-Montgomery VA-
211 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR
NORTHEASTERN FLOYD AND MONTGOMERY COUNTIES...

At 211 PM EDT, a severe thunderstorm was located near Childress, or
near Christiansburg, moving northeast at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Blacksburg...
Christiansburg...
Pilot...
Shawsville...
Copper Hill...
Terrys Fork...
and Prices Fork.

This includes The following Location Virginia Tech.
 
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 3719 8054 3719 8052 3720 8052 3720 8054
      3725 8058 3728 8048 3735 8035 3713 8017
      3711 8018 3711 8016 3704 8011 3702 8018
      3696 8038
TIME...MOT...LOC 1811Z 237DEG 23KT 3710 8047 

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

VFJ

564 
WWUS51 KRNK 041826
SVSRNK

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

VAC063-121-041835-
/O.EXP.KRNK.SV.W.0033.000000T0000Z-210504T1830Z/
Floyd VA-Montgomery VA-
226 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHEASTERN FLOYD AND MONTGOMERY COUNTIES WILL EXPIRE AT 230 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
south central, southwestern 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 Montgomery County until 315 PM.

LAT...LON 3719 8054 3719 8052 3720 8052 3720 8054
      3725 8058 3728 8048 3735 8035 3713 8017
      3711 8018 3711 8016 3704 8011 3702 8018
      3696 8038
TIME...MOT...LOC 1825Z 237DEG 23KT 3714 8039 

$$

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, 1:53 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, 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.