Alert archive / North Carolina / Tornado Warnings in 2021

Tornado Warning 20, NWS Blacksburg, VA

August 18, 2021Surry County, North Carolina; Carroll County, Virginia

NWS Blacksburg, VA issued this tornado warning at Aug 18, 2021, 12:24 AM EDT for Surry County, North Carolina; Carroll County, Virginia. It was in force for 21 min. 1 report 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 18, 2021, 12:24 AM EDT (04:24 UTC)
Expired: Aug 18, 2021, 12:45 AM EDT
In force: 21 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Surry County, NC, Carroll County, VA

The radar

The Roanoke radar (KFCX), 69 km from the middle of the area, began a volume at 04:23 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 18, 12:48 AM EDT	TSTM WND DMG	4 Nw Fancy Gap, VA	TREE DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 17, 6:28 PM EDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 4.4 hours before the alert went out and 101 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: 349 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 641 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 225 m²/s²
0-3 km storm-relative helicity: 278 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted.

815 
WFUS51 KRNK 180424
TORRNK
NCC171-VAC035-180500-
/O.NEW.KRNK.TO.W.0020.210818T0424Z-210818T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service BLACKSBURG VA
1224 AM EDT Wed Aug 18 2021

The National Weather Service in BLACKSBURG has issued a

* Tornado Warning for...
  Northwestern Surry County in northwestern North Carolina...
  South central Carroll County in southwestern Virginia...

* Until 100 AM EDT.
    
* At 1223 AM EDT, a severe thunderstorm capable of producing a
  tornado was located near Low Gap, or near Bottom, moving north at
  30 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Hillsville...
  Fancy Gap...
  Woodlawn...
  Lambsburg...
  Pipers Gap...
  and Low Gap.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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 3649 8086 3656 8087 3656 8084 3659 8087
      3677 8088 3676 8066 3648 8079
TIME...MOT...LOC 0423Z 184DEG 26KT 3652 8081 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

WP

3 follow-up statements

808 
WWUS51 KRNK 180426
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
1226 AM EDT Wed Aug 18 2021

NCC171-VAC035-180500-
/O.CON.KRNK.TO.W.0020.000000T0000Z-210818T0500Z/
Surry NC-Carroll VA-
1226 AM EDT Wed Aug 18 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 100 AM EDT FOR 
NORTH CENTRAL SURRY AND SOUTH CENTRAL CARROLL COUNTIES...
    
At 1226 AM EDT, a severe thunderstorm capable of producing a tornado
was located near Lambsburg, or near Bottom, moving north at 30 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Hillsville...
Fancy Gap...
Woodlawn...
Lambsburg...
and Pipers Gap.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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 3651 8083 3656 8084 3659 8085 3677 8088
      3676 8066 3651 8079
TIME...MOT...LOC 0426Z 185DEG 25KT 3654 8080 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

WP

928 
WWUS51 KRNK 180434
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
1234 AM EDT Wed Aug 18 2021

NCC171-180443-
/O.CAN.KRNK.TO.W.0020.000000T0000Z-210818T0500Z/
Surry NC-
1234 AM EDT Wed Aug 18 2021

...THE TORNADO WARNING FOR 
NORTH CENTRAL SURRY COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area.  Therefore, the warning has been cancelled. 
However, there is still a tornado warning in effect for northeastern 
Surry County until 1245 AM.

A Tornado Watch remains in effect until 200 AM EDT for north central
and northwestern North Carolina...and southwestern Virginia.

LAT...LON 3656 8083 3659 8083 3676 8086 3676 8066
      3656 8077
TIME...MOT...LOC 0433Z 201DEG 32KT 3659 8077 

$$

VAC035-180500-
/O.CON.KRNK.TO.W.0020.000000T0000Z-210818T0500Z/
Carroll VA-
1234 AM EDT Wed Aug 18 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 100 AM EDT FOR 
SOUTH CENTRAL CARROLL COUNTY...
    
At 1233 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Lambsburg, or near Cana, moving north at 35 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Hillsville...
Fancy Gap...
Woodlawn...
Lambsburg...
and Pipers Gap.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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 3656 8083 3659 8083 3676 8086 3676 8066
      3656 8077
TIME...MOT...LOC 0433Z 201DEG 32KT 3659 8077 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

WP

787 
WWUS51 KRNK 180445
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
1245 AM EDT Wed Aug 18 2021

VAC035-180455-
/O.CAN.KRNK.TO.W.0020.000000T0000Z-210818T0500Z/
Carroll VA-
1245 AM EDT Wed Aug 18 2021

...THE TORNADO WARNING FOR 
SOUTH CENTRAL CARROLL COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

A Tornado Watch remains in effect until 200 AM EDT for north central
and northwestern North Carolina...and southwestern Virginia.

LAT...LON 3656 8083 3659 8083 3676 8086 3676 8066
      3656 8077
TIME...MOT...LOC 0444Z 184DEG 26KT 3668 8076 

$$

WP

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 8:26 PM EDT	Special Weather Statement	RNK	Alleghany, Ashe, Wilkes	49 min
Aug 17, 8:50 PM EDT	Special Weather Statement	RNK	Wilkes	25 min
Aug 17, 9:03 PM EDT	Special Weather Statement	RNK	Yadkin	27 min
Aug 17, 9:57 PM EDT	Flash Flood Warning	RNK	Ashe, Wilkes	5 hr
Aug 17, 10:13 PM EDT	Special Weather Statement	RNK	Wilkes	32 min
Aug 17, 10:43 PM EDT	Areal Flood Advisory	RNK	Alleghany, Surry, Wilkes, Yadkin	7 hr
Aug 17, 10:47 PM EDT	Tornado Warning	RNK	Surry, Wilkes, Yadkin	28 min
Aug 17, 11:15 PM EDT	Special Weather Statement	RNK	Surry, Yadkin	30 min
Aug 17, 11:49 PM EDT	Special Weather Statement	RNK	Yadkin	26 min
Aug 18, 12:08 AM EDT	Tornado Warning	RNK	Surry	37 min
Aug 18, 1:01 AM EDT	Tornado Warning	RNK	Surry	29 min
Aug 18, 2:10 AM EDT	Flash Flood Warning	RNK	Alleghany, Surry	5 hr
Aug 18, 2:54 AM EDT	Areal Flood Warning	RNK	Watauga	6 hr
Aug 18, 3:08 AM EDT	Areal Flood Warning	RNK	Ashe, Wilkes	6 hr
Aug 17, 10:13 PM EDT	Areal Flood Advisory	RNK	Smyth, Tazewell	6 hr
Aug 17, 11:26 PM EDT	Areal Flood Advisory	RNK	Bland, Wythe	5 hr
Aug 17, 11:38 PM EDT	Special Weather Statement	RNK	City of Galax	37 min
Aug 18, 12:15 AM EDT	Areal Flood Advisory	RNK	Floyd, Franklin, Giles, Henry, Montgomery, Patrick and 6 more	6 hr
Aug 18, 12:22 AM EDT	Special Weather Statement	RNK	Carroll	23 min
Aug 18, 12:48 AM EDT	Special Weather Statement	RNK	Carroll	27 min
Aug 18, 1:38 AM EDT	Special Weather Statement	RNK	Giles	37 min
Aug 18, 1:59 AM EDT	Areal Flood Advisory	RNK	Craig	3 hr
Aug 18, 2:02 AM EDT	Special Weather Statement	RNK	Montgomery	28 min
Aug 18, 2:23 AM EDT	Special Weather Statement	RNK	Patrick	37 min
Aug 18, 2:35 AM EDT	Special Weather Statement	RNK	Craig	25 min
Aug 18, 2:44 AM EDT	Special Weather Statement	RNK	Roanoke, City of Salem	31 min
Aug 18, 2:51 AM EDT	Special Weather Statement	RNK	Henry	24 min
Aug 18, 3:18 AM EDT	Special Weather Statement	RNK	Franklin	27 min

Nearby

Tornado Warnings in North Carolina, 2021 Tornado Warnings in Virginia, 2021 Every tornado warning in 2021 Tornadoes 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.