Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 119, NWS Greenville-Spartanburg, SC

August 11, 2021Cherokee County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 11, 2021, 6:18 PM EDT for Cherokee County, South Carolina. It was in force for 25 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
Aug 11, 2021, 6:18 PM EDT (22:18 UTC)
Expired
Aug 11, 2021, 6:43 PM EDT
In force
25 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Cherokee County, SC

The radar

The Greer radar (KGSP), 57 km from the middle of the area, began a volume at 22:18 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

TimeReportWhereRemark
Aug 11, 6:30 PM EDTTSTM WND DMG1 Sw Gaffney, SC911 CALL CENTER REPORTED TREE DOWN ON OLD GEORGIA HWY.
Aug 11, 6:30 PM EDTTSTM WND DMG4 S Gaffney, SC911 CALL CENTER REPORTED TREE DOWN ON BURNT GIN RD.
Aug 11, 6:30 PM EDTTSTM WND DMG5 Se Gaffney, SC911 CALL CENTER REPORTED TREE DOWN ON PONDFIELD RD.

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, 10.3 hours before the alert went out and 199 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 2021-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 653 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 2021-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.1939Sfc1 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
653 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
1352 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
-21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

576 
WUUS52 KGSP 112218
SVRGSP
SCC021-112300-
/O.NEW.KGSP.SV.W.0119.210811T2218Z-210811T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
618 PM EDT Wed Aug 11 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Central Cherokee County in Upstate South Carolina...

* Until 700 PM EDT.

* At 618 PM EDT, a severe thunderstorm was located 4 miles south of
  Gaffney, and is nearly stationary.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor hail damage to vehicles is expected. Expect wind 
           damage to trees and power lines.

* Locations impacted include...
  Gaffney, Cherokee Falls, Draytonville and Thicketty. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Brief damaging winds will blow down trees and power lines over small
areas. A brief period of large hail is also possible. Seek shelter
inside an interior room.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

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 3490 8165 3490 8167 3491 8168 3491 8172
      3504 8177 3510 8156 3497 8148 3497 8149
      3494 8149 3494 8147 3493 8148 3489 8164
TIME...MOT...LOC 2218Z 345DEG 1KT 3501 8164 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

TDP
1 follow-up statement
060 
WWUS52 KGSP 112243
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
643 PM EDT Wed Aug 11 2021

SCC021-112252-
/O.CAN.KGSP.SV.W.0119.000000T0000Z-210811T2300Z/
Cherokee SC-
643 PM EDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHEROKEE COUNTY IS
CANCELLED...
                
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 has been cancelled.  However heavy rain, 
gusty winds, and frequent lightning are all still possible with this 
thunderstorm.

If you experienced damaging winds or hail, please report it 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.

LAT...LON 3490 8165 3490 8167 3491 8168 3491 8172
      3504 8177 3510 8156 3497 8148 3497 8149
      3494 8149 3494 8147 3493 8148 3489 8164
TIME...MOT...LOC 2238Z 345DEG 1KT 3500 8164 

$$

TDP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 8:01 PM EDTSpecial Weather StatementGSPAnderson29 min
Aug 10, 8:20 PM EDTSpecial Weather StatementGSPLaurens, Union25 min
Aug 10, 8:32 PM EDTSpecial Weather StatementGSPAnderson28 min
Aug 10, 8:45 PM EDTSpecial Weather StatementGSPLaurens30 min
Aug 10, 9:10 PM EDTSpecial Weather StatementGSPLaurens35 min
Aug 11, 3:28 PM EDTSpecial Weather StatementGSPGreenville32 min
Aug 11, 3:32 PM EDTSpecial Weather StatementGSPGreenville28 min
Aug 11, 3:37 PM EDTSpecial Weather StatementGSPGreenwood23 min
Aug 11, 3:41 PM EDTSevere Thunderstorm WarningGSPAbbeville, Greenwood49 min
Aug 11, 4:01 PM EDTSevere Thunderstorm WarningGSPSpartanburg44 min
Aug 11, 4:04 PM EDTSevere Thunderstorm WarningGSPGreenville41 min
Aug 11, 4:27 PM EDTSpecial Weather StatementGSPSpartanburg33 min
Aug 11, 4:35 PM EDTSpecial Weather StatementGSPAnderson25 min
Aug 11, 4:42 PM EDTSevere Thunderstorm WarningGSPAnderson48 min
Aug 11, 4:51 PM EDTSpecial Weather StatementGSPGreenville24 min
Aug 11, 4:54 PM EDTSevere Thunderstorm WarningGSPSpartanburg32 min
Aug 11, 4:59 PM EDTSevere Thunderstorm WarningGSPAnderson32 min
Aug 11, 5:14 PM EDTSevere Thunderstorm WarningGSPGreenwood46 min
Aug 11, 5:17 PM EDTSevere Thunderstorm WarningGSPCherokee43 min
Aug 11, 5:19 PM EDTSevere Thunderstorm WarningGSPAbbeville41 min
Aug 11, 5:33 PM EDTSpecial Weather StatementGSPAnderson27 min
Aug 11, 5:42 PM EDTSpecial Weather StatementGSPCherokee33 min
Aug 11, 6:09 PM EDTSpecial Weather StatementGSPCherokee36 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2021Every 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.