Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 78, NWS Blacksburg, VA

July 11, 2021Bath County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 11, 2021, 6:47 PM EDT for Bath County, Virginia. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 11, 2021, 6:47 PM EDT (22:47 UTC)
Expired: Jul 11, 2021, 7:45 PM EDT
In force: 58 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Bath County, VA

The radar

The Roanoke radar (KFCX), 113 km from the middle of the area, began a volume at 22:49 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.

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 10.8 hours before the alert went out and 91 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: 267 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 700 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

313 
WUUS51 KRNK 112247
SVRRNK
VAC017-112345-
/O.NEW.KRNK.SV.W.0078.210711T2247Z-210711T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
647 PM EDT Sun Jul 11 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Southern Bath County in west central Virginia...

* Until 745 PM EDT.

* At 647 PM EDT, a severe thunderstorm was located over Lake Moomaw,
  or near Hot Springs, moving east at 5 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...
  Millboro...
  Hot Springs...
  Nimrod Hall...
  Lake Moomaw...
  Douthat State Park...
  Ingalls Field...
  and Bacova Junction.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds, as well as
deadly cloud to ground lightning. For your safety, move to an
interior room on the lowest floor of a sturdy building. Stay away
from windows.

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning.

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 3803 7952 3786 7967 3793 7992 3795 7994
      3796 8001 3802 7999 3804 7997
TIME...MOT...LOC 2247Z 265DEG 6KT 3800 7991 

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

RAB

3 follow-up statements

875 
WWUS51 KRNK 112314
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
714 PM EDT Sun Jul 11 2021

VAC017-112345-
/O.CON.KRNK.SV.W.0078.000000T0000Z-210711T2345Z/
Bath VA-
714 PM EDT Sun Jul 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR SOUTHERN BATH COUNTY...

At 714 PM EDT, a severe thunderstorm was located over Bacova
Junction, or over Hot Springs, moving east at 5 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...
Millboro...
Hot Springs...
Nimrod Hall...
Lake Moomaw...
Douthat State Park...
Ingalls Field...
and Bacova Junction.

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.

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning.

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 3803 7952 3786 7967 3793 7992 3795 7994
      3796 7997 3801 7999 3804 7992
TIME...MOT...LOC 2314Z 265DEG 6KT 3800 7986 

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

RAB

165 
WWUS51 KRNK 112334
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
734 PM EDT Sun Jul 11 2021

VAC017-112345-
/O.CON.KRNK.SV.W.0078.000000T0000Z-210711T2345Z/
Bath VA-
734 PM EDT Sun Jul 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR SOUTHERN BATH COUNTY...

At 734 PM EDT, a severe thunderstorm was located over Hot Springs,
moving east at 5 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Hot Springs...
Bacova Junction...
Ingalls Field...
and Callison.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for DAMAGING WINDS, as well as deadly cloud to
ground lightning. For your safety, move to an interior room on the
lowest floor of a sturdy building. Stay away from windows.

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning.

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 3803 7961 3789 7971 3794 7988 3797 7991
      3800 7990 3804 7987 3804 7978
TIME...MOT...LOC 2334Z 265DEG 6KT 3801 7982 

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

RAB

425 
WWUS51 KRNK 112352
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
752 PM EDT Sun Jul 11 2021

VAC017-120001-
/O.EXP.KRNK.SV.W.0078.000000T0000Z-210711T2345Z/
Bath VA-
752 PM EDT Sun Jul 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL BATH COUNTY HAS 
EXPIRED...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been allowed to expire.

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 3803 7961 3789 7971 3794 7988 3797 7991
      3800 7990 3804 7987 3804 7978
TIME...MOT...LOC 2351Z 265DEG 6KT 3801 7979 

$$

RAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 8:32 PM EDT	Special Weather Statement	RNK	Carroll, Giles, Pulaski, City of Galax	58 min
Jul 10, 10:07 PM EDT	Areal Flood Advisory	RNK	Craig, Floyd, Giles, Montgomery, Pulaski, Roanoke and 1 more	113 min
Jul 10, 10:22 PM EDT	Special Weather Statement	RNK	Patrick	23 min
Jul 10, 10:49 PM EDT	Special Weather Statement	RNK	Floyd, Franklin, Henry, Patrick	56 min
Jul 11, 12:20 AM EDT	Special Weather Statement	RNK	City of Roanoke, City of Salem	55 min
Jul 11, 11:21 AM EDT	Special Weather Statement	RNK	Halifax	24 min
Jul 11, 11:43 AM EDT	Severe Thunderstorm Warning	RNK	Halifax	62 min
Jul 11, 11:53 AM EDT	Special Weather Statement	RNK	City of Martinsville	37 min
Jul 11, 12:24 PM EDT	Special Weather Statement	RNK	City of Danville	36 min
Jul 11, 12:42 PM EDT	Special Weather Statement	RNK	Charlotte	33 min
Jul 11, 12:46 PM EDT	Special Weather Statement	RNK	Pittsylvania, City of Danville	44 min
Jul 11, 1:10 PM EDT	Special Weather Statement	RNK	Charlotte	35 min
Jul 11, 1:38 PM EDT	Severe Thunderstorm Warning	RNK	Campbell, Halifax, Pittsylvania	67 min
Jul 11, 2:34 PM EDT	Special Weather Statement	RNK	City of Lynchburg	26 min
Jul 11, 2:43 PM EDT	Special Weather Statement	RNK	Charlotte	32 min
Jul 11, 2:56 PM EDT	Special Weather Statement	RNK	Carroll	34 min
Jul 11, 3:27 PM EDT	Special Weather Statement	RNK	Grayson, Wythe	48 min
Jul 11, 5:17 PM EDT	Flash Flood Warning	RNK	Grayson, Smyth, Wythe	3 hr
Jul 11, 5:38 PM EDT	Flash Flood Warning	RNK	Grayson	3 hr
Jul 11, 5:45 PM EDT	Special Weather Statement	RNK	Pulaski, City of Radford	60 min
Jul 11, 6:02 PM EDT	Special Weather Statement	RNK	Carroll, City of Galax	58 min
Jul 11, 6:12 PM EDT	Flash Flood Warning	RNK	Carroll, Grayson, City of Galax	3 hr
Jul 11, 6:30 PM EDT	Special Weather Statement	RNK	Bath	60 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.