Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 66, NWS Blacksburg, VA

June 21, 2021Ashe County, Watauga County, Wilkes County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Jun 21, 2021, 5:43 PM EDT for Ashe County, Watauga County, Wilkes County, North Carolina. It was in force for 47 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: Jun 21, 2021, 5:43 PM EDT (21:43 UTC)
Expired: Jun 21, 2021, 6:30 PM EDT
In force: 47 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Ashe County, NC, Watauga County, NC, Wilkes County, NC

The radar

The Roanoke radar (KFCX), 140 km from the middle of the area, began a volume at 21:46 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
Jun 21, 6:40 PM EDT	HAIL 0.5	3 Nne Maple Springs, NC

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

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.7 hours before the alert went out and 146 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: 913 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 1058 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

356 
WUUS51 KRNK 212143
SVRRNK
NCC009-189-193-212230-
/O.NEW.KRNK.SV.W.0066.210621T2143Z-210621T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
543 PM EDT Mon Jun 21 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Northwestern Wilkes County in northwestern North Carolina...
  Southeastern Watauga County in northwestern North Carolina...
  Southeastern Ashe County in northwestern North Carolina...

* Until 630 PM EDT.

* At 543 PM EDT, a severe thunderstorm was located over Sands, or
  over Boone, moving northeast 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...
  Boone...
  West Jefferson...
  Glendale Springs...
  Wilbar...
  Deep Gap...
  Todd...
  and Rutherwood.

This includes The following Location Appalachian State University.
 
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 3615 8166 3624 8172 3648 8136 3622 8117
TIME...MOT...LOC 2143Z 242DEG 28KT 3622 8164 

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

Hanes

1 follow-up statement

071 
WWUS51 KRNK 212212
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
612 PM EDT Mon Jun 21 2021

NCC009-189-193-212230-
/O.CON.KRNK.SV.W.0066.000000T0000Z-210621T2230Z/
Wilkes NC-Watauga NC-Ashe NC-
612 PM EDT Mon Jun 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT 
FOR NORTHWESTERN WILKES...SOUTHEASTERN WATAUGA AND SOUTHEASTERN ASHE 
COUNTIES...

At 611 PM EDT, a severe thunderstorm was located over Deep Gap, 
moving northeast at 20 mph. Another strong storm was located near 
Boone.

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...
Boone...
West Jefferson...
Glendale Springs...
Wilbar...
Deep Gap...
Todd...
and Rutherwood.

This includes The following Location Appalachian State University.
 
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 3615 8166 3624 8172 3648 8136 3622 8117
TIME...MOT...LOC 2211Z 244DEG 19KT 3624 8151 

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

Hanes

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 5:30 PM EDT	Special Weather Statement	RNK	Ashe	30 min
Jun 21, 5:58 PM EDT	Special Weather Statement	RNK	Alleghany	32 min
Jun 21, 6:29 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe, Watauga, Wilkes	61 min
Jun 21, 6:50 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Surry, Wilkes, Yadkin	40 min
Jun 21, 7:00 PM EDT	Special Weather Statement	RNK	Watauga	15 min
Jun 21, 7:32 PM EDT	Areal Flood Advisory	RNK	Watauga, Wilkes	3 hr
Jun 21, 7:32 PM EDT	Special Weather Statement	RNK	Wilkes	28 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 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.