Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 60, NWS Blacksburg, VA

June 13, 20216 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jun 13, 2021, 8:09 PM EDT for 6 counties in Virginia. It was in force for 66 min. 4 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: Jun 13, 2021, 8:09 PM EDT (00:09 UTC)
Expired: Jun 13, 2021, 9:15 PM EDT
In force: 66 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Bedford County, VA, City of Roanoke, VA, City of Salem, VA, Franklin County, VA, Pittsylvania County, VA, Roanoke County, VA

The radar

The Roanoke radar (KFCX), 26 km from the middle of the area, began a volume at 00:12 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
Jun 13, 8:20 PM EDT	TSTM WND DMG	1 Ene Boones Mill, VA	TREE DOWN BLOCKING ROADWAY AT BOONES MILL ROAD AND TERRACE ROAD.
Jun 13, 8:23 PM EDT	TSTM WND DMG	1 N Wirtz, VA	TREE DOWN ON POWERLINES.
Jun 13, 8:44 PM EDT	TSTM WND DMG	2 Wsw Burnt Chimney, VA	ONE TREE DOWN ON BONBROOK ROAD.
Jun 13, 8:47 PM EDT	TSTM WND DMG	3 E Rocky Mount, VA	ONE TREE DOWN ON CHESTNUT HILL ROAD BLOCKING THE ROADWAY.

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 00:00Z, 0.2 hours before the alert went out and 47 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: 592 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1407 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

As transmitted.

186 
WUUS51 KRNK 140009
SVRRNK
VAC019-067-143-161-770-775-140115-
/O.NEW.KRNK.SV.W.0060.210614T0009Z-210614T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
809 PM EDT Sun Jun 13 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Roanoke County in west central Virginia...
  The City of Salem in west central Virginia...
  Northwestern Pittsylvania County in south central Virginia...
  The City of Roanoke in west central Virginia...
  Southwestern Bedford County in south central Virginia...
  Central Franklin County in west central Virginia...

* Until 915 PM EDT.

* At 809 PM EDT, severe thunderstorms were located along a line
  extending from near Salem to near Burnt Chimney to near Moneta,
  moving south at 25 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...
  Roanoke...
  Salem...
  Vinton...
  Rocky Mount...
  Boones Mill...
  Huddleston...
  and Moneta.

This includes The following Location The Salem Fairgrounds.
 
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 3693 7998 3702 8011 3706 8012 3708 8011
      3712 8012 3711 8016 3711 8018 3723 8019
      3731 8026 3734 8026 3738 8018 3725 7982
      3722 7944 3696 7943
TIME...MOT...LOC 0009Z 010DEG 20KT 3725 8008 3716 7988 3716 7957 

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

BMG

2 follow-up statements

927 
WWUS51 KRNK 140044
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
844 PM EDT Sun Jun 13 2021

VAC019-067-143-161-770-775-140115-
/O.CON.KRNK.SV.W.0060.000000T0000Z-210614T0115Z/
Roanoke VA-City of Salem VA-Pittsylvania VA-City of Roanoke VA-
Bedford VA-Franklin VA-
844 PM EDT Sun Jun 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT 
FOR ROANOKE...NORTHWESTERN PITTSYLVANIA...SOUTHWESTERN BEDFORD AND 
CENTRAL FRANKLIN COUNTIES...THE CITY OF SALEM AND THE CITY OF 
ROANOKE...

At 843 PM EDT, severe thunderstorms were located along a line
extending from Copper Hill to near Rocky Mount to Penhook, moving
south at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Roanoke...
Salem...
Vinton...
Rocky Mount...
Boones Mill...
Bent Mountain...
and Penhook.

This includes The following Location The Salem Fairgrounds.
 
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 3693 7998 3702 8011 3706 8012 3708 8011
      3712 8012 3711 8016 3711 8018 3723 8019
      3731 8026 3734 8026 3738 8018 3730 7996
      3725 7983 3717 7982 3713 7944 3696 7943
TIME...MOT...LOC 0043Z 010DEG 20KT 3707 8012 3698 7992 3698 7961 

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

BMG

447 
WWUS51 KRNK 140107
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
907 PM EDT Sun Jun 13 2021

VAC019-067-143-161-770-775-140116-
/O.EXP.KRNK.SV.W.0060.000000T0000Z-210614T0115Z/
Roanoke VA-City of Salem VA-Pittsylvania VA-City of Roanoke VA-
Bedford VA-Franklin VA-
907 PM EDT Sun Jun 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR ROANOKE...NORTHWESTERN 
PITTSYLVANIA...SOUTHWESTERN BEDFORD AND CENTRAL FRANKLIN 
COUNTIES...THE CITY OF SALEM AND THE CITY OF ROANOKE WILL EXPIRE AT 
915 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southwestern 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 3693 7998 3702 8011 3706 8012 3708 8011
      3712 8012 3711 8016 3711 8018 3723 8019
      3731 8026 3734 8026 3738 8018 3730 7996
      3725 7983 3717 7982 3713 7944 3696 7943
TIME...MOT...LOC 0106Z 010DEG 20KT 3696 8014 3687 7994 3687 7963 

$$

BMG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 8:01 PM EDT	Areal Flood Advisory	RNK	Bedford	3 hr
Jun 13, 8:17 PM EDT	Severe Thunderstorm Warning	RNK	Craig, Giles, Montgomery, Pulaski, City of Radford	58 min
Jun 13, 8:27 PM EDT	Areal Flood Warning	RNK	Bath	6 hr
Jun 13, 8:57 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Franklin, Henry, Patrick, City of Martinsville	63 min
Jun 13, 9:24 PM EDT	Special Weather Statement	RNK	Bland, Carroll, Grayson, Smyth, Tazewell, Wythe and 1 more	36 min
Jun 13, 9:58 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Henry, Patrick, City of Martinsville	61 min
Jun 13, 10:22 PM EDT	Special Weather Statement	RNK	Grayson, Smyth	38 min
Jun 13, 10:56 PM EDT	Special Weather Statement	RNK	Grayson	49 min
Jun 13, 11:01 PM EDT	Areal Flood Advisory	RNK	Henry, Patrick	119 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.