Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 174, NWS Blacksburg, VA

August 13, 2021Alleghany County, Bath County, City of Covington, Virginia; Greenbrier County, West Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 13, 2021, 4:57 PM EDT for Alleghany County, Bath County, City of Covington, Virginia; Greenbrier County, West Virginia. It was in force for 47 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: Aug 13, 2021, 4:57 PM EDT (20:57 UTC)
Expired: Aug 13, 2021, 5:44 PM EDT
In force: 47 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, City of Covington, VA, Greenbrier County, WV

The radar

The Roanoke radar (KFCX), 116 km from the middle of the area, began a volume at 20:56 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, 9.0 hours before the alert went out and 92 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: 1268 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 822 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

076 
WUUS51 KRNK 132057
SVRRNK
VAC005-017-580-WVC025-132200-
/O.NEW.KRNK.SV.W.0174.210813T2057Z-210813T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
457 PM EDT Fri Aug 13 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  The City of Covington in west central Virginia...
  Northern Alleghany County in west central Virginia...
  Bath County in west central Virginia...
  East central Greenbrier County in southeastern West Virginia...

* Until 600 PM EDT.

* At 456 PM EDT, severe thunderstorms were located along a line
  extending from 7 miles southeast of Marlinton to near Callaghan,
  moving northeast at 15 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...
  Covington...
  Clifton Forge...
  Warm Springs...
  Hot Springs...
  Iron Gate...
  Lake Moomaw...
  and Douthat State Park.

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 3822 7970 3820 7960 3790 7963 3787 7965
      3786 7963 3781 7964 3779 7966 3778 7973
      3780 7981 3776 7986 3772 8015 3806 8010
      3806 7996 3811 7993 3813 7994 3816 7992
      3818 7992 3827 7979
TIME...MOT...LOC 2056Z 242DEG 15KT 3812 8003 3776 8006 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RR

3 follow-up statements

945 
WWUS51 KRNK 132117
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
517 PM EDT Fri Aug 13 2021

WVC025-132127-
/O.CAN.KRNK.SV.W.0174.000000T0000Z-210813T2200Z/
Greenbrier WV-
517 PM EDT Fri Aug 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
EAST CENTRAL GREENBRIER COUNTY IS CANCELLED...

The storms which prompted the warning have 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.

LAT...LON 3822 7971 3820 7960 3790 7963 3787 7965
      3786 7963 3779 7966 3778 7973 3780 7981
      3776 7986 3772 8015 3790 8012 3799 8000
      3811 7993 3813 7994 3817 7991 3818 7992
      3827 7979
TIME...MOT...LOC 2117Z 242DEG 15KT 3816 7994 3780 7997 

$$

VAC005-017-580-132200-
/O.CON.KRNK.SV.W.0174.000000T0000Z-210813T2200Z/
City of Covington VA-Alleghany VA-Bath VA-
517 PM EDT Fri Aug 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR
NORTHERN ALLEGHANY AND BATH COUNTIES IN WEST CENTRAL VIRGINIA AND THE
CITY OF COVINGTON...

At 517 PM EDT, severe thunderstorms were located along a line
extending from near Mountain Grove to Covington, moving northeast at
15 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...
Covington...
Clifton Forge...
Warm Springs...
Hot Springs...
Iron Gate...
Lake Moomaw...
and Douthat State Park.

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 3822 7971 3820 7960 3790 7963 3787 7965
      3786 7963 3779 7966 3778 7973 3780 7981
      3776 7986 3772 8015 3790 8012 3799 8000
      3811 7993 3813 7994 3817 7991 3818 7992
      3827 7979
TIME...MOT...LOC 2117Z 242DEG 15KT 3816 7994 3780 7997 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RR

326 
WWUS51 KRNK 132137
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
537 PM EDT Fri Aug 13 2021

VAC005-017-580-132200-
/O.CON.KRNK.SV.W.0174.000000T0000Z-210813T2200Z/
City of Covington VA-Alleghany VA-Bath VA-
537 PM EDT Fri Aug 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR
CENTRAL ALLEGHANY AND SOUTHWESTERN BATH COUNTIES IN WEST CENTRAL
VIRGINIA AND THE CITY OF COVINGTON...

At 537 PM EDT, severe thunderstorms were located along a line
extending from near Hot Springs to Covington, moving east at 20 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...
Covington...
Clifton Forge...
Warm Springs...
Hot Springs...
Iron Gate...
Douthat State Park...
and Selma.

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 3773 8008 3807 7983 3810 7961 3790 7963
      3787 7965 3786 7963 3779 7966 3778 7973
      3780 7981 3776 7986
TIME...MOT...LOC 2137Z 270DEG 17KT 3801 7980 3777 7997 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RR

459 
WWUS51 KRNK 132144
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
544 PM EDT Fri Aug 13 2021

VAC005-017-580-132154-
/O.CAN.KRNK.SV.W.0174.000000T0000Z-210813T2200Z/
City of Covington VA-Alleghany VA-Bath VA-
544 PM EDT Fri Aug 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
CENTRAL ALLEGHANY AND SOUTHWESTERN BATH COUNTIES IN WEST CENTRAL
VIRGINIA AND THE CITY OF COVINGTON IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
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.

LAT...LON 3773 8008 3807 7983 3810 7961 3790 7963
      3787 7965 3786 7963 3779 7966 3778 7973
      3780 7981 3776 7986
TIME...MOT...LOC 2143Z 242DEG 15KT 3802 7977 3778 7994 

$$

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 12:02 PM EDT	Special Weather Statement	RNK	Henry	28 min
Aug 13, 12:21 PM EDT	Special Weather Statement	RNK	City of Roanoke, City of Salem	24 min
Aug 13, 12:31 PM EDT	Special Weather Statement	RNK	Roanoke, City of Salem	29 min
Aug 13, 12:40 PM EDT	Severe Thunderstorm Warning	RNK	Botetourt, Montgomery, Roanoke, City of Roanoke, City of Salem	65 min
Aug 13, 12:51 PM EDT	Special Weather Statement	RNK	Pulaski	24 min
Aug 13, 12:56 PM EDT	Special Weather Statement	RNK	Bath	34 min
Aug 13, 1:06 PM EDT	Special Weather Statement	RNK	Botetourt	24 min
Aug 13, 1:13 PM EDT	Special Weather Statement	RNK	City of Radford	32 min
Aug 13, 1:23 PM EDT	Special Weather Statement	RNK	Botetourt	37 min
Aug 13, 1:31 PM EDT	Special Weather Statement	RNK	Bath	29 min
Aug 13, 1:34 PM EDT	Special Weather Statement	RNK	Roanoke	26 min
Aug 13, 1:45 PM EDT	Special Weather Statement	RNK	Bath	30 min
Aug 13, 1:52 PM EDT	Special Weather Statement	RNK	Montgomery	23 min
Aug 13, 1:59 PM EDT	Special Weather Statement	RNK	Charlotte	31 min
Aug 13, 2:02 PM EDT	Special Weather Statement	RNK	Floyd	28 min
Aug 13, 2:13 PM EDT	Special Weather Statement	RNK	Franklin	32 min
Aug 13, 2:15 PM EDT	Special Weather Statement	RNK	Amherst	30 min
Aug 13, 2:20 PM EDT	Special Weather Statement	RNK	Rockbridge	25 min
Aug 13, 2:21 PM EDT	Special Weather Statement	RNK	Grayson	24 min
Aug 13, 2:25 PM EDT	Special Weather Statement	RNK	Giles	35 min
Aug 13, 2:28 PM EDT	Special Weather Statement	RNK	Pittsylvania	32 min
Aug 13, 2:36 PM EDT	Severe Thunderstorm Warning	RNK	Rockbridge	29 min
Aug 13, 2:40 PM EDT	Special Weather Statement	RNK	Tazewell	35 min
Aug 13, 2:56 PM EDT	Special Weather Statement	RNK	City of Roanoke	34 min
Aug 13, 2:58 PM EDT	Special Weather Statement	RNK	Amherst	32 min
Aug 13, 2:58 PM EDT	Special Weather Statement	RNK	Pittsylvania	32 min
Aug 13, 3:03 PM EDT	Special Weather Statement	RNK	Giles	27 min
Aug 13, 3:09 PM EDT	Special Weather Statement	RNK	Campbell	36 min
Aug 13, 3:11 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania	49 min
Aug 13, 3:45 PM EDT	Special Weather Statement	RNK	Appomattox, Buckingham, Charlotte	60 min
Aug 13, 3:59 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Buckingham	61 min
Aug 13, 4:14 PM EDT	Special Weather Statement	RNK	Halifax	31 min
Aug 13, 4:16 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	29 min
Aug 13, 4:41 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	34 min
Aug 13, 4:55 PM EDT	Severe Thunderstorm Warning	RNK	Buckingham	27 min
Aug 13, 5:03 PM EDT	Special Weather Statement	RNK	Montgomery	27 min
Aug 13, 5:11 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery	49 min
Aug 13, 5:16 PM EDT	Special Weather Statement	RNK	Charlotte	14 min
Aug 13, 5:20 PM EDT	Special Weather Statement	RNK	Giles, City of Radford	40 min
Aug 13, 5:31 PM EDT	Special Weather Statement	RNK	Charlotte	14 min
Aug 13, 5:38 PM EDT	Special Weather Statement	RNK	Franklin	52 min
Aug 13, 5:56 PM EDT	Special Weather Statement	RNK	Montgomery, Roanoke	34 min
Aug 13, 5:59 PM EDT	Special Weather Statement	RNK	Giles	31 min
Aug 13, 6:02 PM EDT	Special Weather Statement	RNK	Giles	43 min
Aug 13, 6:20 PM EDT	Special Weather Statement	RNK	Botetourt	25 min
Aug 13, 6:26 PM EDT	Special Weather Statement	RNK	Franklin, Roanoke, City of Roanoke, City of Salem	49 min
Aug 13, 6:45 PM EDT	Special Weather Statement	RNK	Craig	45 min
Aug 13, 6:46 PM EDT	Special Weather Statement	RNK	Craig	29 min
Aug 13, 7:11 PM EDT	Special Weather Statement	RNK	Pittsylvania	34 min
Aug 13, 7:13 PM EDT	Special Weather Statement	RNK	Bedford, Botetourt, Craig	47 min
Aug 13, 7:34 PM EDT	Special Weather Statement	RNK	Tazewell	26 min
Aug 13, 7:34 PM EDT	Special Weather Statement	RNK	Appomattox	26 min
Aug 13, 7:36 PM EDT	Special Weather Statement	RNK	Giles	24 min
Aug 13, 7:43 PM EDT	Special Weather Statement	RNK	Bedford	32 min
Aug 13, 7:56 PM EDT	Special Weather Statement	RNK	Bedford, City of Lynchburg	34 min
Aug 13, 12:13 PM EDT	Special Weather Statement	RNK	Greenbrier	32 min
Aug 13, 12:27 PM EDT	Special Weather Statement	RNK	Greenbrier	33 min
Aug 13, 12:47 PM EDT	Special Weather Statement	RNK	Greenbrier	28 min
Aug 13, 1:11 PM EDT	Special Weather Statement	RNK	Greenbrier	34 min
Aug 13, 2:49 PM EDT	Special Weather Statement	RNK	Greenbrier	26 min
Aug 13, 3:18 PM EDT	Special Weather Statement	RNK	Greenbrier, Summers	27 min
Aug 13, 3:47 PM EDT	Special Weather Statement	RNK	Greenbrier, Summers	58 min
Aug 13, 3:50 PM EDT	Areal Flood Advisory	RNK	Greenbrier, Summers	3 hr
Aug 13, 3:54 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier, Summers	53 min
Aug 13, 4:19 PM EDT	Flash Flood Warning	RNK	Greenbrier, Summers	3 hr
Aug 13, 5:05 PM EDT	Special Weather Statement	RNK	Summers	25 min
Aug 13, 5:30 PM EDT	Special Weather Statement	RNK	Summers	30 min
Aug 13, 7:14 PM EDT	Special Weather Statement	RNK	Mercer	46 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2021 Severe Thunderstorm Warnings in West 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.