Alert archive / South Carolina / Tornado Warnings in 2021

Tornado Warning 61, NWS Greenville-Spartanburg, SC

August 17, 2021Cherokee County, Spartanburg County, South Carolina; Cleveland County, North Carolina

NWS Greenville-Spartanburg, SC issued this tornado warning at Aug 17, 2021, 7:59 PM EDT for Cherokee County, Spartanburg County, South Carolina; Cleveland County, North Carolina. It was in force for 46 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, 7:59 PM EDT (23:59 UTC)
Expired
Aug 17, 2021, 8:45 PM EDT
In force
46 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Cleveland County, NC, Cherokee County, SC, Spartanburg County, SC

The radar

The Greer radar (KGSP), 70 km from the middle of the area, began a volume at 00:02 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, 6:28 PM EDTTornado WatchSPC10 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 12.0 hours before the alert went out and 181 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.

760 
WFUS52 KGSP 172359
TORGSP
NCC045-SCC021-083-180045-
/O.NEW.KGSP.TO.W.0061.210817T2359Z-210818T0045Z/

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

The National Weather Service in Greenville-Spartanburg has issued a

* Tornado Warning for...
  Southern Cleveland County in the Piedmont of North Carolina...
  East central Spartanburg County in Upstate South Carolina...
  Cherokee County in Upstate South Carolina...

* Until 845 PM EDT.
    
* At 758 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles southwest of Gaffney, or near Pacolet Mills,
  moving northeast 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.

* This dangerous storm will be near...
  Gaffney around 810 PM EDT.
  Earl, Patterson Springs, Blacksburg, Grover and Boiling Springs NC 
  around 830 PM EDT.
  Shelby around 840 PM EDT.

Other locations impacted by this dangerous thunderstorm include
Cherokee Falls, Draytonville, Thicketty and Kings Creek.

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 3524 8132 3517 8133 3516 8133 3517 8137
      3514 8140 3510 8140 3490 8164 3491 8171
      3489 8174 3495 8187 3542 8159
TIME...MOT...LOC 2358Z 211DEG 32KT 3497 8174 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

CAC
1 follow-up statement
981 
WWUS52 KGSP 180016
SVSGSP

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

SCC083-180026-
/O.CAN.KGSP.TO.W.0061.000000T0000Z-210818T0045Z/
Spartanburg SC-
816 PM EDT Tue Aug 17 2021

...THE TORNADO WARNING FOR EAST CENTRAL SPARTANBURG 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 200 AM EDT for the Piedmont
of North Carolina...and Upstate South Carolina.

LAT...LON 3524 8132 3516 8133 3517 8137 3514 8140
      3510 8140 3505 8146 3505 8147 3490 8164
      3491 8172 3493 8174 3493 8176 3503 8179
      3504 8181 3506 8181 3542 8159
TIME...MOT...LOC 0016Z 211DEG 32KT 3511 8164 

$$

NCC045-SCC021-180045-
/O.CON.KGSP.TO.W.0061.000000T0000Z-210818T0045Z/
Cleveland NC-Cherokee SC-
816 PM EDT Tue Aug 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR SOUTHERN
CLEVELAND AND CHEROKEE COUNTIES...
    
At 816 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Gaffney, moving northeast 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.

This dangerous storm will be near...
  Earl, Patterson Springs, Blacksburg, Boiling Springs NC and Grover 
  around 830 PM EDT.
  Shelby around 840 PM EDT.
  Lawndale around 850 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Cherokee Falls, Draytonville, Thicketty and Kings Creek.

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 3524 8132 3516 8133 3517 8137 3514 8140
      3510 8140 3505 8146 3505 8147 3490 8164
      3491 8172 3493 8174 3493 8176 3503 8179
      3504 8181 3506 8181 3542 8159
TIME...MOT...LOC 0016Z 211DEG 32KT 3511 8164 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

CAC

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 11:47 AM EDTTornado WarningGSPOconee13 min
Aug 17, 12:30 PM EDTFlash Flood WarningGSPOconee5 hr
Aug 17, 12:30 PM EDTTornado WarningGSPOconee, Pickens23 min
Aug 17, 12:59 PM EDTTornado WarningGSPAnderson, Pickens23 min
Aug 17, 1:20 PM EDTTornado WarningGSPPickens25 min
Aug 17, 2:03 PM EDTFlash Flood WarningGSPGreenville, Pickens5 hr
Aug 17, 2:14 PM EDTTornado WarningGSPGreenwood, Laurens33 min
Aug 17, 2:52 PM EDTTornado WarningGSPGreenville26 min
Aug 17, 3:01 PM EDTTornado Warning Tornado observedGSPGreenville18 min
Aug 17, 3:25 PM EDTSpecial Weather StatementGSPSpartanburg35 min
Aug 17, 3:26 PM EDTSpecial Weather StatementGSPOconee34 min
Aug 17, 4:34 PM EDTSpecial Weather StatementGSPAbbeville, Anderson, Pickens26 min
Aug 17, 5:08 PM EDTTornado WarningGSPAnderson, Greenville, Pickens52 min
Aug 17, 5:10 PM EDTTornado WarningGSPAbbeville, Greenville, Greenwood, Laurens50 min
Aug 17, 5:11 PM EDTTornado WarningGSPAbbeville, Greenwood, Laurens49 min
Aug 17, 5:33 PM EDTTornado WarningGSPAnderson, Greenville, Spartanburg42 min
Aug 17, 5:37 PM EDTTornado WarningGSPChester, York38 min
Aug 17, 5:57 PM EDTTornado WarningGSPGreenville, Laurens, Spartanburg48 min
Aug 17, 5:58 PM EDTTornado WarningGSPGreenwood, Laurens47 min
Aug 17, 6:15 PM EDTTornado WarningGSPLaurens, Spartanburg, Union45 min
Aug 17, 6:16 PM EDTFlash Flood WarningGSPGreenville, Pickens, Spartanburg3 hr
Aug 17, 6:42 PM EDTTornado WarningGSPSpartanburg48 min
Aug 17, 6:46 PM EDTTornado WarningGSPCherokee, Spartanburg44 min
Aug 17, 6:51 PM EDTTornado WarningGSPLaurens, Spartanburg, Union39 min
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, 4:07 PM EDTTornado WarningGSPAvery, Burke, McDowell, Mitchell53 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, 6:57 PM EDTFlash Flood WarningGSPBurke, McDowell6 hr

Nearby

Tornado Warnings in South Carolina, 2021Tornado 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.