Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 3, NWS Blacksburg, VA

March 18, 2021Ashe County, Watauga County, Wilkes County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Mar 18, 2021, 5:42 PM EDT for Ashe County, Watauga County, Wilkes County, North Carolina. It was in force for 33 min. 3 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, 5:42 PM EDT (21:42 UTC)
Expired: Mar 18, 2021, 6:15 PM EDT
In force: 33 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), 149 km from the middle of the area, began a volume at 21:45 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, 5:43 PM EDT	HAIL 1	1 Ne Sugar Grove, NC
Mar 18, 5:51 PM EDT	HAIL 0.7	3 Se Silverstone, NC
Mar 18, 5:55 PM EDT	TSTM WND DMG	1 Nnw Trout, NC	TREE DOWN ON THREE TOP ROAD SOUTH OF CRESTON.

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 165 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 486 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 470 m²/s²
0-3 km storm-relative helicity: 562 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

632 
WUUS51 KRNK 182142
SVRRNK
NCC009-189-193-182215-
/O.NEW.KRNK.SV.W.0003.210318T2142Z-210318T2215Z/

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

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  West central Wilkes County in northwestern North Carolina...
  Central Watauga County in northwestern North Carolina...
  Southwestern Ashe County in northwestern North Carolina...

* Until 615 PM EDT.

* At 541 PM EDT, a severe thunderstorm was located over Silverstone,
  or over Sugar Grove, 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...
  Boone...
  Jefferson...
  West Jefferson...
  Sugar Grove...
  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 3636 8179 3635 8179 3634 8176 3634 8171
      3635 8172 3638 8173 3639 8173 3648 8148
      3623 8134 3619 8181 3634 8186
TIME...MOT...LOC 2141Z 254DEG 27KT 3628 8175 

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

RR

3 follow-up statements

872 
WWUS51 KRNK 182149
SVSRNK

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

NCC009-189-193-182215-
/O.CON.KRNK.SV.W.0003.000000T0000Z-210318T2215Z/
Wilkes NC-Watauga NC-Ashe NC-
549 PM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR
WEST CENTRAL WILKES...CENTRAL WATAUGA AND SOUTHWESTERN ASHE
COUNTIES...

At 549 PM EDT, a severe thunderstorm was located over Meat Camp, or
near Todd, 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...
Boone...
Jefferson...
West Jefferson...
Deep Gap...
Todd...
Rutherwood...
and Trout.

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 3634 8176 3634 8171 3635 8172 3638 8173
      3639 8173 3648 8148 3623 8134 3622 8174
TIME...MOT...LOC 2149Z 254DEG 27KT 3630 8167 

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

RR

913 
WWUS51 KRNK 182202
SVSRNK

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

NCC009-189-193-182215-
/O.CON.KRNK.SV.W.0003.000000T0000Z-210318T2215Z/
Wilkes NC-Watauga NC-Ashe NC-
602 PM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR
WEST CENTRAL WILKES...NORTHEASTERN WATAUGA AND SOUTHWESTERN ASHE
COUNTIES...

At 602 PM EDT, a severe thunderstorm was located over Baldwin, or
near Todd, 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...
Jefferson...
West Jefferson...
Todd...
Deep Gap...
Trout...
Fleetwood...
and Baldwin.

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 3631 8169 3635 8168 3641 8166 3648 8148
      3623 8134 3624 8164
TIME...MOT...LOC 2202Z 254DEG 27KT 3633 8155 

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

RR

087 
WWUS51 KRNK 182212
SVSRNK

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

NCC009-189-193-182222-
/O.EXP.KRNK.SV.W.0003.000000T0000Z-210318T2215Z/
Wilkes NC-Watauga NC-Ashe NC-
612 PM EDT Thu Mar 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
WEST CENTRAL WILKES...NORTHEASTERN WATAUGA AND SOUTHWESTERN ASHE
COUNTIES WILL EXPIRE AT 615 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses 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 this thunderstorm.

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 3631 8169 3635 8168 3641 8166 3648 8148
      3623 8134 3624 8164
TIME...MOT...LOC 2212Z 254DEG 27KT 3635 8148 

$$

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 2:46 AM EDT	Special Weather Statement	RNK	Stokes	29 min
Mar 18, 2:47 PM EDT	Special Weather Statement	RNK	Stokes, Surry	43 min
Mar 18, 3:34 PM EDT	Special Weather Statement	RNK	Stokes, Yadkin	41 min
Mar 18, 4:15 PM EDT	Special Weather Statement	RNK	Rockingham, Stokes	30 min
Mar 18, 4:44 PM EDT	Special Weather Statement	RNK	Caswell, Rockingham	31 min
Mar 18, 5:15 PM EDT	Special Weather Statement	RNK	Caswell, Rockingham	30 min
Mar 18, 5:19 PM EDT	Severe Thunderstorm Warning	RNK	Watauga	26 min
Mar 18, 5:32 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	58 min
Mar 18, 5:37 PM EDT	Tornado Warning	RNK	Caswell, Rockingham	23 min
Mar 18, 6:00 PM EDT	Tornado Warning	RNK	Caswell	22 min
Mar 18, 6:14 PM EDT	Special Weather Statement	RNK	Ashe	31 min
Mar 18, 6:52 PM EDT	Special Weather Statement	RNK	Alleghany	23 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.