Alert archive / West Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 171, NWS Blacksburg, VA

August 13, 2021Greenbrier County, Summers County, West Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 13, 2021, 3:54 PM EDT for Greenbrier County, Summers County, West Virginia. It was in force for 53 min. 2 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: Aug 13, 2021, 3:54 PM EDT (19:54 UTC)
Expired: Aug 13, 2021, 4:47 PM EDT
In force: 53 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Greenbrier County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 98 km from the middle of the area, began a volume at 19:55 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
Aug 13, 3:55 PM EDT	TSTM WND DMG	1 Nw Lawn, WV	MOTORIST OBSERVED TREES AND TREE LIMBS BLOWN DOWN ALONG INTERSTATE 64 NEAR THE BORDER OF GREENBRIER AND SUMMERS COUNTIES.
Aug 13, 4:00 PM EDT	TSTM WND DMG	2 Se Elton, WV	A TREE WAS BLOWN DOWN BY THUNDERSTORM WINDS NEAR THE INTERSECTION OF MICHAELS WAY AND LICK CREEK ROAD.

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, 7.9 hours before the alert went out and 131 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.

482 
WUUS51 KRNK 131954
SVRRNK
WVC025-089-132100-
/O.NEW.KRNK.SV.W.0171.210813T1954Z-210813T2100Z/

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

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Southwestern Greenbrier County in southeastern West Virginia...
  Northeastern Summers County in southeastern West Virginia...

* Until 500 PM EDT.

* At 353 PM EDT, severe thunderstorms were located along a line
  extending from near Rupert to Bluestone Dam, 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...
  Hinton...
  Alderson...
  Rupert...
  Lawn...
  Elton...
  Glenray...
  and Bluestone 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.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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 3812 8041 3766 8069 3761 8096 3770 8091
      3769 8090 3767 8090 3768 8088 3772 8089
      3787 8080 3787 8075 3790 8078 3796 8074
TIME...MOT...LOC 1953Z 235DEG 11KT 3797 8065 3764 8088 

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

$$

RR

3 follow-up statements

787 
WWUS51 KRNK 132021
SVSRNK

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

WVC025-089-132100-
/O.CON.KRNK.SV.W.0171.000000T0000Z-210813T2100Z/
Greenbrier WV-Summers WV-
421 PM EDT Fri Aug 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR
SOUTHWESTERN GREENBRIER AND NORTHEASTERN SUMMERS COUNTIES...

At 419 PM EDT, severe thunderstorms were located along a line
extending from near Anjean to near Hix, moving northeast at 15 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated. Non severe, dime sized hail was reported 
         earlier in Hinton.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Alderson...
Rupert...
Glenray...
Hix...
Lawn...
Talcott...
and Meadow Bluff.

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.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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 3812 8041 3766 8069 3763 8085 3768 8088
      3772 8086 3787 8077 3787 8075 3790 8078
      3796 8074
TIME...MOT...LOC 2019Z 235DEG 11KT 3802 8057 3769 8080 

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

$$

RR

504 
WWUS51 KRNK 132033
SVSRNK

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

WVC025-089-132100-
/O.CON.KRNK.SV.W.0171.000000T0000Z-210813T2100Z/
Greenbrier WV-Summers WV-
433 PM EDT Fri Aug 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR
SOUTHWESTERN GREENBRIER AND NORTHEASTERN SUMMERS COUNTIES...

At 433 PM EDT, a severe thunderstorm was located over Glenray, or
over Alderson, moving northeast 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...
Alderson...
Lawn...
Talcott...
Glenray...
and Hix.

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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 3764 8079 3769 8081 3775 8082 3784 8078
      3790 8054 3766 8069
TIME...MOT...LOC 2033Z 247DEG 18KT 3774 8069 

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

$$

RR

309 
WWUS51 KRNK 132047
SVSRNK

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

WVC025-089-132057-
/O.CAN.KRNK.SV.W.0171.000000T0000Z-210813T2100Z/
Greenbrier WV-Summers WV-
447 PM EDT Fri Aug 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
SOUTHWESTERN GREENBRIER AND NORTHEASTERN SUMMERS COUNTIES IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 3764 8079 3769 8081 3775 8082 3784 8078
      3790 8054 3766 8069
TIME...MOT...LOC 2046Z 235DEG 11KT 3777 8064 

$$

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
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, 4:19 PM EDT	Flash Flood Warning	RNK	Greenbrier, Summers	3 hr
Aug 13, 4:57 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier	47 min
Aug 13, 5:05 PM EDT	Special Weather Statement	RNK	Summers	25 min
Aug 13, 5:20 PM EDT	Special Weather Statement	RNK	Mercer	40 min
Aug 13, 5:30 PM EDT	Special Weather Statement	RNK	Summers	30 min
Aug 13, 6:02 PM EDT	Special Weather Statement	RNK	Mercer	43 min
Aug 13, 6:45 PM EDT	Special Weather Statement	RNK	Monroe	45 min
Aug 13, 7:14 PM EDT	Special Weather Statement	RNK	Mercer	46 min

Nearby

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.