Alert archive / West Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 6, NWS Blacksburg, VA

March 18, 20214 counties in West Virginia; Giles County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Mar 18, 2021, 8:01 PM EDT for 4 counties in West Virginia; Giles County, Virginia. It was in force for 59 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: Mar 18, 2021, 8:01 PM EDT (00:01 UTC)
Expired: Mar 18, 2021, 9:00 PM EDT
In force: 59 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Giles County, VA, Greenbrier County, WV, Mercer County, WV, Monroe County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 63 km from the middle of the area, began a volume at 00:05 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
Mar 18, 8:14 PM EDT	HAIL 0.7	2 Ene Wayside, WV	PEA TO DIME SIZE HAIL REPORTED 2 MILES EAST NORTHEAST OF WAYSIDE, WV.
Mar 18, 8:30 PM EDT	HAIL 1	1 Wnw Union, WV	UP TO A COUPLE INCHES DEEP.

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, 0.0 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: 4 J/kg
Mixed-layer CIN: -212 J/kg
Mixed-layer LCL: 695 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

758 
WUUS51 KRNK 190001
SVRRNK
VAC071-WVC025-055-063-089-190100-
/O.NEW.KRNK.SV.W.0006.210319T0001Z-210319T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
801 PM EDT Thu Mar 18 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Northeastern Giles County in southwestern Virginia...
  South central Greenbrier County in southeastern West Virginia...
  Southeastern Summers County in southeastern West Virginia...
  Eastern Mercer County in southeastern West Virginia...
  Monroe County in southeastern West Virginia...

* Until 900 PM EDT.

* At 801 PM EDT, severe thunderstorms were located along a line
  extending from Hix to near Buck to Elgood, moving east 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...
  Ronceverte...
  Alderson...
  Peterstown...
  Union...
  Mountain Lake...
  Buck...
  and Glace.

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 3777 8024 3774 8026 3773 8025 3769 8030
      3764 8027 3758 8028 3757 8033 3755 8031
      3754 8033 3753 8031 3753 8030 3749 8032
      3742 8047 3734 8044 3733 8045 3743 8096
      3760 8087 3775 8088
TIME...MOT...LOC 0001Z 278DEG 23KT 3773 8081 3759 8079 3743 8094 

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

RR

5 follow-up statements

545 
WWUS51 KRNK 190017
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
817 PM EDT Thu Mar 18 2021

WVC055-190027-
/O.CAN.KRNK.SV.W.0006.000000T0000Z-210319T0100Z/
Mercer WV-
817 PM EDT Thu Mar 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
EASTERN MERCER COUNTY IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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 3777 8024 3774 8026 3773 8025 3769 8030
      3764 8027 3758 8028 3757 8033 3755 8031
      3754 8033 3753 8031 3753 8030 3749 8032
      3742 8047 3734 8044 3733 8045 3741 8086
      3757 8073 3775 8077
TIME...MOT...LOC 0017Z 278DEG 23KT 3772 8069 3758 8067 3742 8082 

$$

VAC071-WVC025-063-089-190100-
/O.CON.KRNK.SV.W.0006.000000T0000Z-210319T0100Z/
Giles VA-Greenbrier WV-Summers WV-Monroe WV-
817 PM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR
NORTHEASTERN GILES...SOUTH CENTRAL GREENBRIER...EAST CENTRAL SUMMERS
AND MONROE COUNTIES...

At 817 PM EDT, severe thunderstorms were located along a line
extending from Glenray to Wayside to Peterstown, moving east 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...
Ronceverte...
Alderson...
Peterstown...
Union...
Mountain Lake...
Glace...
and Wayside.

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 3777 8024 3774 8026 3773 8025 3769 8030
      3764 8027 3758 8028 3757 8033 3755 8031
      3754 8033 3753 8031 3753 8030 3749 8032
      3742 8047 3734 8044 3733 8045 3741 8086
      3757 8073 3775 8077
TIME...MOT...LOC 0017Z 278DEG 23KT 3772 8069 3758 8067 3742 8082 

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

RR

251 
WWUS51 KRNK 190027
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
827 PM EDT Thu Mar 18 2021

WVC089-190036-
/O.CAN.KRNK.SV.W.0006.000000T0000Z-210319T0100Z/
Summers WV-
827 PM EDT Thu Mar 18 2021

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

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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 8025 3769 8030 3764 8027 3758 8028
      3757 8033 3755 8031 3754 8033 3753 8030
      3750 8032 3749 8036 3742 8047 3740 8047
      3746 8076 3756 8066 3766 8070 3771 8066
      3774 8026
TIME...MOT...LOC 0026Z 278DEG 23KT 3771 8064 3757 8062 3741 8077 

$$

VAC071-WVC025-063-190100-
/O.CON.KRNK.SV.W.0006.000000T0000Z-210319T0100Z/
Giles VA-Greenbrier WV-Monroe WV-
827 PM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR
NORTHEASTERN GILES...SOUTH CENTRAL GREENBRIER AND MONROE COUNTIES...

At 826 PM EDT, severe thunderstorms were located along a line
extending from Glenray to near Raines Corner to Peterstown, moving
east 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...
Union...
Laurel Branch...
Pickaway...
Glace...
Raines Corner...
Organ Cave...
and Zenith.

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 3773 8025 3769 8030 3764 8027 3758 8028
      3757 8033 3755 8031 3754 8033 3753 8030
      3750 8032 3749 8036 3742 8047 3740 8047
      3746 8076 3756 8066 3766 8070 3771 8066
      3774 8026
TIME...MOT...LOC 0026Z 278DEG 23KT 3771 8064 3757 8062 3741 8077 

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

RR

284 
WWUS51 KRNK 190045
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
845 PM EDT Thu Mar 18 2021

VAC071-190054-
/O.CAN.KRNK.SV.W.0006.000000T0000Z-210319T0100Z/
Giles VA-
845 PM EDT Thu Mar 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHEASTERN GILES COUNTY IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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 8025 3769 8030 3764 8027 3758 8028
      3757 8033 3755 8031 3754 8033 3753 8030
      3750 8032 3749 8036 3745 8042 3747 8050
      3748 8051 3748 8057 3757 8053 3772 8053
      3774 8026
TIME...MOT...LOC 0044Z 278DEG 23KT 3769 8050 3755 8048 3739 8063 

$$

WVC025-063-190100-
/O.CON.KRNK.SV.W.0006.000000T0000Z-210319T0100Z/
Greenbrier WV-Monroe WV-
845 PM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR
SOUTH CENTRAL GREENBRIER AND EASTERN MONROE COUNTIES...

At 844 PM EDT, severe thunderstorms were located along a line
extending from near Organ Cave to near Laurel Branch to near
Interior, moving east 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...
Laurel Branch...
Hollywood...
Pickaway...
Roaring Mountain Summit...
Glace...
Waiteville...
and Moncove Lake 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 3773 8025 3769 8030 3764 8027 3758 8028
      3757 8033 3755 8031 3754 8033 3753 8030
      3750 8032 3749 8036 3745 8042 3747 8050
      3748 8051 3748 8057 3757 8053 3772 8053
      3774 8026
TIME...MOT...LOC 0044Z 278DEG 23KT 3769 8050 3755 8048 3739 8063 

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

RR

772 
WWUS51 KRNK 190052
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
852 PM EDT Thu Mar 18 2021

WVC025-190101-
/O.CAN.KRNK.SV.W.0006.000000T0000Z-210319T0100Z/
Greenbrier WV-
852 PM EDT Thu Mar 18 2021

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

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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 3770 8038 3769 8038 3770 8035 3769 8030
      3764 8027 3758 8028 3757 8033 3755 8031
      3754 8033 3753 8030 3750 8032 3749 8036
      3745 8042 3748 8053 3757 8042 3769 8052
      3769 8044 3770 8041
TIME...MOT...LOC 0051Z 271DEG 27KT 3767 8043 3757 8035 3749 8046 

$$

WVC063-190100-
/O.CON.KRNK.SV.W.0006.000000T0000Z-210319T0100Z/
Monroe WV-
852 PM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR
EASTERN MONROE COUNTY...

At 851 PM EDT, severe thunderstorms were located along a line
extending from near Organ Cave to near Moncove Lake State Park to
Waiteville, moving east at 30 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...
Hollywood...
Waiteville...
Moncove Lake State Park...
Gap Mills...
and Glace.

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 3770 8038 3769 8038 3770 8035 3769 8030
      3764 8027 3758 8028 3757 8033 3755 8031
      3754 8033 3753 8030 3750 8032 3749 8036
      3745 8042 3748 8053 3757 8042 3769 8052
      3769 8044 3770 8041
TIME...MOT...LOC 0051Z 271DEG 27KT 3767 8043 3757 8035 3749 8046 

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

RR

402 
WWUS51 KRNK 190057
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
857 PM EDT Thu Mar 18 2021

WVC063-190107-
/O.EXP.KRNK.SV.W.0006.000000T0000Z-210319T0100Z/
Monroe WV-
857 PM EDT Thu Mar 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
EASTERN MONROE COUNTY WILL EXPIRE AT 900 PM EDT...
            
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 will be allowed to expire.  However small hail
and gusty winds are still possible with these thunderstorms.

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 3770 8038 3769 8038 3770 8035 3769 8030
      3764 8027 3758 8028 3757 8033 3755 8031
      3754 8033 3753 8030 3750 8032 3749 8036
      3745 8042 3748 8053 3757 8042 3769 8052
      3769 8044 3770 8041
TIME...MOT...LOC 0057Z 278DEG 23KT 3767 8041 3757 8033 3749 8044 

$$

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 8:08 PM EDT	Special Weather Statement	RNK	Grayson, Smyth	52 min
Mar 18, 8:44 PM EDT	Special Weather Statement	RNK	Tazewell	31 min
Mar 18, 8:56 PM EDT	Special Weather Statement	RNK	Craig	34 min
Mar 19, 4:50 AM EDT	Areal Flood Advisory	RNK	Carroll	5 hr
Mar 19, 10:46 AM EDT	River Flood Warning	RNK	Halifax	35 hr

Nearby

Severe Thunderstorm Warnings in West Virginia, 2021 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.