Alert archive / North Carolina / Tornado Warnings in 2021

Tornado Warning 44, NWS Greenville-Spartanburg, SC

August 17, 20214 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this tornado warning at Aug 17, 2021, 4:07 PM EDT for 4 counties in North Carolina. It was in force for 53 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, 4:07 PM EDT (20:07 UTC)
Expired
Aug 17, 2021, 5:00 PM EDT
In force
53 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Avery County, NC, Burke County, NC, McDowell County, NC, Mitchell County, NC

The radar

The Knoxville radar (KMRX), 133 km from the middle of the area, began a volume at 20:11 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 watch it was issued in

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

IssuedProductOfficeLasted
Aug 17, 10:42 AM EDTTornado WatchSPC8 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.1 hours before the alert went out and 182 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2021-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 522 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2021-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

094 
WFUS52 KGSP 172007
TORGSP
NCC011-023-111-121-172100-
/O.NEW.KGSP.TO.W.0044.210817T2007Z-210817T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Greenville-Spartanburg SC
407 PM EDT Tue Aug 17 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Tornado Warning for...
  Northeastern McDowell County in western North Carolina...
  Northeastern Mitchell County in western North Carolina...
  Avery County in western North Carolina...
  Northwestern Burke County in western North Carolina...

* Until 500 PM EDT.
    
* At 407 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 10 miles east of Spruce Pine, or 4 miles southeast of
  Linville Falls, moving northwest 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.

* This dangerous storm will be near...
  Linville Falls and Crossnore around 420 PM EDT.
  Newland, B.R. Parkway-Linville Falls To Grandfather and 
  Grandfather Mountain State Park around 430 PM EDT.
  Elk Park, Sugar Mountain, Beech Mountain In Avery County and 
  Banner Elk around 440 PM EDT.

Other locations impacted by this dangerous thunderstorm include
Ingalls, Minneapolis, Altamont, Pineola and Ashford.

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.

Please report damaging winds, hail, or flooding to the National
Weather Service by calling toll free, 1, 800, 2 6 7, 8 1 0 1, or by
posting on our Facebook page, or Tweet it using hashtag nwsgsp. Your
message should describe the event and the specific location where it
occurred.

&&

LAT...LON 3627 8189 3621 8191 3619 8188 3619 8186
      3600 8178 3596 8181 3595 8178 3593 8178
      3592 8175 3588 8173 3580 8193 3615 8217
      3615 8214 3611 8213 3610 8208 3613 8205
      3612 8203 3629 8192
TIME...MOT...LOC 2007Z 156DEG 25KT 3592 8188 

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

$$

RWH
1 follow-up statement
046 
WWUS52 KGSP 172030
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
430 PM EDT Tue Aug 17 2021

NCC111-172039-
/O.CAN.KGSP.TO.W.0044.000000T0000Z-210817T2100Z/
McDowell NC-
430 PM EDT Tue Aug 17 2021

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

A Tornado Watch remains in effect until 700 PM EDT for western North
Carolina.

LAT...LON 3627 8189 3621 8191 3619 8188 3619 8186
      3601 8178 3596 8181 3595 8178 3593 8178
      3589 8191 3596 8195 3593 8196 3591 8198
      3588 8199 3615 8217 3615 8215 3611 8213
      3610 8208 3613 8205 3612 8203 3629 8192
TIME...MOT...LOC 2029Z 151DEG 41KT 3597 8195 

$$

NCC011-023-121-172100-
/O.CON.KGSP.TO.W.0044.000000T0000Z-210817T2100Z/
Mitchell NC-Avery NC-Burke NC-
430 PM EDT Tue Aug 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR
NORTHEASTERN MITCHELL...AVERY AND NORTHWESTERN BURKE COUNTIES...
    
At 429 PM EDT, a severe thunderstorm capable of producing a tornado
was located 7 miles northeast of Spruce Pine, or over Linville Falls,
moving northwest at 50 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.

This dangerous storm will be near...
  Crossnore around 430 PM EDT.
  Newland around 440 PM EDT.
  Elk Park around 450 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Ingalls, Altamont, Pineola, Minneapolis and Linville.

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.

&&

LAT...LON 3627 8189 3621 8191 3619 8188 3619 8186
      3601 8178 3596 8181 3595 8178 3593 8178
      3589 8191 3596 8195 3593 8196 3591 8198
      3588 8199 3615 8217 3615 8215 3611 8213
      3610 8208 3613 8205 3612 8203 3629 8192
TIME...MOT...LOC 2029Z 151DEG 41KT 3597 8195 

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

$$

RWH

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 17, 2:22 AM EDTRiver Flood WarningGSPHenderson, Transylvania4 days
Aug 17, 3:01 AM EDTRiver Flood AdvisoryGSPBuncombe, Henderson79 min
Aug 17, 3:27 AM EDTRiver Flood AdvisoryGSPBuncombe26 hr
Aug 17, 3:59 AM EDTRiver Flood WarningGSPMadison40 hr
Aug 17, 4:12 AM EDTRiver Flood WarningGSPBuncombe31 hr
Aug 17, 4:20 AM EDTRiver Flood WarningGSPBuncombe, Henderson4 days
Aug 17, 11:36 AM EDTTornado Warning Tornado observedGSPAlexander, Iredell39 min
Aug 17, 12:05 PM EDTSpecial Weather StatementGSPIredell25 min
Aug 17, 12:06 PM EDTTornado WarningGSPIredell39 min
Aug 17, 12:33 PM EDTTornado WarningGSPAlexander12 min
Aug 17, 12:42 PM EDTTornado Warning Tornado observedGSPIredell18 min
Aug 17, 1:09 PM EDTFlash Flood WarningGSPJackson, Macon, Transylvania5 hr
Aug 17, 1:25 PM EDTFlash Flood WarningGSPTransylvania4 hr
Aug 17, 1:56 PM EDTSpecial Weather StatementGSPTransylvania34 min
Aug 17, 2:01 PM EDTSpecial Weather StatementGSPCatawba, Lincoln29 min
Aug 17, 2:02 PM EDTSpecial Weather StatementGSPIredell28 min
Aug 17, 2:02 PM EDTSpecial Weather StatementGSPAlexander28 min
Aug 17, 2:31 PM EDTTornado WarningGSPBurke, Caldwell44 min
Aug 17, 2:31 PM EDTTornado WarningGSPMacon19 min
Aug 17, 3:02 PM EDTTornado WarningGSPCaldwell43 min
Aug 17, 3:06 PM EDTTornado WarningGSPAlexander, Caldwell39 min
Aug 17, 3:12 PM EDTFlash Flood WarningGSPHaywood3 hr
Aug 17, 3:41 PM EDTFlash Flood WarningGSPBuncombe5 hr
Aug 17, 3:48 PM EDTTornado WarningGSPAlexander, Burke, Caldwell, Catawba42 min
Aug 17, 4:08 PM EDTFlash Flood WarningGSPMadison9 hr
Aug 17, 4:16 PM EDTFlash Flood WarningGSPBuncombe, Henderson5 hr
Aug 17, 4:17 PM EDTTornado WarningGSPAvery, Burke, Caldwell43 min
Aug 17, 4:20 PM EDTTornado WarningGSPHenderson, Polk, Rutherford12 min
Aug 17, 4:24 PM EDTFlash Flood Warning Considerable damage threatGSPHaywood4 hr
Aug 17, 4:35 PM EDTFlash Flood WarningGSPBuncombe, Henderson, Polk, Rutherford8 hr
Aug 17, 4:50 PM EDTFlash Flood WarningGSPMcDowell9 hr
Aug 17, 4:58 PM EDTFlash Flood WarningGSPYancey4 hr
Aug 17, 4:59 PM EDTTornado WarningGSPAvery, Burke, McDowell, Mitchell, Yancey46 min
Aug 17, 5:14 PM EDTFlash Flood Warning Considerable damage threatGSPTransylvania4 hr
Aug 17, 5:17 PM EDTRiver Flood WarningGSPHaywood12 hr
Aug 17, 5:26 PM EDTTornado WarningGSPAvery, McDowell, Mitchell, Rutherford, Yancey49 min
Aug 17, 5:28 PM EDTTornado WarningGSPAvery, Burke, Caldwell47 min
Aug 17, 5:32 PM EDTFlash Flood WarningGSPMitchell4 hr
Aug 17, 5:48 PM EDTRiver Flood WarningGSPBuncombe26 hr
Aug 17, 6:00 PM EDTFlash Flood WarningGSPAvery, Burke, Caldwell9 hr
Aug 17, 6:16 PM EDTFlash Flood WarningGSPHenderson, Polk, Rutherford3 hr
Aug 17, 6:42 PM EDTTornado WarningGSPPolk, Rutherford48 min
Aug 17, 6:57 PM EDTFlash Flood WarningGSPBurke, McDowell6 hr
Aug 17, 7:59 PM EDTTornado WarningGSPCleveland46 min

Nearby

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