Alert archive / North Carolina / Tornado Warnings in 2021

Tornado Warning 9, NWS Blacksburg, VA

August 17, 2021Wilkes County, Yadkin County, North Carolina

NWS Blacksburg, VA issued this tornado warning at Aug 17, 2021, 12:35 PM EDT for Wilkes County, Yadkin County, North Carolina. It was in force for 40 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 17, 2021, 12:35 PM EDT (16:35 UTC)
Expired: Aug 17, 2021, 1:15 PM EDT
In force: 40 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Tornado: Observed
Hail: 0.0 in

Counties Wilkes County, NC, Yadkin County, NC

The radar

The Roanoke radar (KFCX), 111 km from the middle of the area, began a volume at 16:38 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 4.6 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: 522 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 593 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

382 
WFUS51 KRNK 171635
TORRNK
NCC193-197-171715-
/O.NEW.KRNK.TO.W.0009.210817T1635Z-210817T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service BLACKSBURG VA
1235 PM EDT Tue Aug 17 2021

The National Weather Service in BLACKSBURG has issued a

* Tornado Warning for...
  Southeastern Wilkes County in northwestern North Carolina...
  Western Yadkin County in northwestern North Carolina...

* Until 115 PM EDT.

* At 1234 PM EDT, a confirmed tornado was located near Harmony, or 14
  miles north of Statesville, moving northwest at 25 mph.

  HAZARD...Damaging tornado.

  SOURCE...Law enforcement confirmed tornado.

  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...
  Jonesville...
  Ronda...
  Windy Gap...
  Buck Shoals...
  Brooks Crossroads...
  Clingman...
  and Arlington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

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 3620 8108 3624 8087 3624 8086 3625 8082
      3625 8079 3605 8072 3606 8098 3605 8100
TIME...MOT...LOC 1634Z 153DEG 21KT 3599 8084 

TORNADO...OBSERVED
MAX HAIL SIZE...0.00 IN

$$

RAB

2 follow-up statements

072 
WWUS51 KRNK 171649
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
1249 PM EDT Tue Aug 17 2021

NCC193-197-171715-
/O.CON.KRNK.TO.W.0009.000000T0000Z-210817T1715Z/
Wilkes NC-Yadkin NC-
1249 PM EDT Tue Aug 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 115 PM EDT FOR 
SOUTHEASTERN WILKES AND SOUTHWESTERN YADKIN COUNTIES...
    
At 1248 PM EDT, a confirmed tornado was located near Buck Shoals, or
11 miles south of Ronda, moving northwest at 25 mph.

HAZARD...Damaging tornado.

SOURCE...Law enforcement confirmed tornado.

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...
Jonesville...
Ronda...
Windy Gap...
Buck Shoals...
Clingman...
Arlington...
and Swancreek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

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 3625 8082 3605 8079 3606 8098 3605 8100
      3620 8108 3624 8087 3624 8086
TIME...MOT...LOC 1648Z 153DEG 21KT 3607 8089 

TORNADO...OBSERVED
MAX HAIL SIZE...0.00 IN

$$

RAB

617 
WWUS51 KRNK 171703
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
103 PM EDT Tue Aug 17 2021

NCC197-171712-
/O.CAN.KRNK.TO.W.0009.000000T0000Z-210817T1715Z/
Yadkin NC-
103 PM EDT Tue Aug 17 2021

...THE TORNADO WARNING FOR SOUTHWESTERN YADKIN COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3620 8108 3620 8107 3624 8087 3615 8088
      3613 8088 3610 8096
TIME...MOT...LOC 1702Z 139DEG 21KT 3614 8094 

$$

NCC193-171715-
/O.CON.KRNK.TO.W.0009.000000T0000Z-210817T1715Z/
Wilkes NC-
103 PM EDT Tue Aug 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 115 PM EDT FOR 
EAST CENTRAL WILKES COUNTY...
    
At 102 PM EDT, a confirmed tornado was located over Clingman, or near
Ronda, moving northwest at 25 mph.

HAZARD...Damaging tornado.

SOURCE...Law enforcement confirmed tornado.

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...
Ronda...
Clingman...
Windy Gap...
and Roaring River.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

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 3620 8108 3620 8107 3624 8087 3615 8088
      3613 8088 3610 8096
TIME...MOT...LOC 1702Z 139DEG 21KT 3614 8094 

TORNADO...OBSERVED
MAX HAIL SIZE...0.00 IN

$$

RAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 3:37 AM EDT	Flash Flood Watch	RNK	Alleghany, Ashe, Surry, Watauga, Wilkes	24 hr
Aug 17, 11:48 AM EDT	Tornado Warning Tornado observed	RNK	Wilkes	42 min
Aug 17, 12:46 PM EDT	Special Weather Statement	RNK	Wilkes	44 min
Aug 17, 1:19 PM EDT	Tornado Warning	RNK	Wilkes	41 min
Aug 17, 1:48 PM EDT	Tornado Warning	RNK	Alleghany, Wilkes	42 min
Aug 17, 1:58 PM EDT	Special Weather Statement	RNK	Alleghany, Caswell, Rockingham, Stokes, Surry, Yadkin	32 min
Aug 17, 2:18 PM EDT	Tornado Warning	RNK	Caswell	32 min
Aug 17, 2:43 PM EDT	Tornado Warning	RNK	Rockingham, Stokes	32 min
Aug 17, 4:35 PM EDT	Special Weather Statement	RNK	Surry	25 min
Aug 17, 5:05 PM EDT	Special Weather Statement	RNK	Alleghany	40 min
Aug 17, 6:50 PM EDT	Special Weather Statement	RNK	Watauga	25 min
Aug 17, 7:13 PM EDT	Flash Flood Warning	RNK	Watauga	8 hr
Aug 17, 7:54 PM EDT	Special Weather Statement	RNK	Ashe	36 min

Nearby

Tornado Warnings in North Carolina, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.