Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 134, NWS Greenville-Spartanburg, SC

August 14, 2021Abbeville County, Greenwood County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 14, 2021, 3:11 PM EDT for Abbeville County, Greenwood County, South Carolina. It was in force for 49 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
Aug 14, 2021, 3:11 PM EDT (19:11 UTC)
Expired
Aug 14, 2021, 4:00 PM EDT
In force
49 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Abbeville County, SC, Greenwood County, SC

The radar

The Greer radar (KGSP), 72 km from the middle of the area, began a volume at 19:15 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 14, 3:45 PM EDTTSTM WND DMG5 W Abbeville, SCA FEW TREES BLOWN DOWN IN THE COUNTY. NO AREA WITH A CONCENTRATION OF TREES DOWN. THE POINT WAS UNDER WHERE THE STRONGEST STORM CORE OCCURRED.

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

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.2 hours before the alert went out and 212 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, Peachtre/Fal Fld, GA at 12:00Z on 2021-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1490 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, Peachtre/Fal Fld, GA at 12:00Z on 2021-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 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
1490 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1011 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
-11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

567 
WUUS52 KGSP 141911
SVRGSP
SCC001-047-142000-
/O.NEW.KGSP.SV.W.0134.210814T1911Z-210814T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
311 PM EDT Sat Aug 14 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Central Abbeville County in Upstate South Carolina...
  West central Greenwood County in Upstate South Carolina...

* Until 400 PM EDT.

* At 311 PM EDT, a severe thunderstorm was located 7 miles northwest
  of Abbeville, or 6 miles southeast of Lake Secession, moving
  northeast at 10 mph.

  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...
  Abbeville, Due West, Lake Secession, Donalds, Shoals Junction,
  Antreville and Hodges.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

Torrential rainfall is occurring with this storm, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.

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 3429 8261 3432 8257 3444 8233 3419 8220
      3411 8256
TIME...MOT...LOC 1911Z 246DEG 8KT 3425 8249 

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

$$

HG
1 follow-up statement
658 
WWUS52 KGSP 141952
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
352 PM EDT Sat Aug 14 2021

SCC001-047-142002-
/O.EXP.KGSP.SV.W.0134.000000T0000Z-210814T2000Z/
Abbeville SC-Greenwood SC-
352 PM EDT Sat Aug 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ABBEVILLE AND WEST
CENTRAL GREENWOOD COUNTIES WILL EXPIRE AT 400 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, gusty winds, and very heavy rain are still possible with this 
thunderstorm.

LAT...LON 3429 8261 3432 8257 3444 8233 3419 8220
      3411 8256
TIME...MOT...LOC 1952Z 257DEG 6KT 3422 8247 

$$

HG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 8:14 PM EDTSpecial Weather StatementGSPYork31 min
Aug 14, 1:06 PM EDTSpecial Weather StatementGSPGreenville39 min
Aug 14, 1:37 PM EDTAreal Flood AdvisoryGSPGreenville83 min
Aug 14, 1:47 PM EDTSpecial Weather StatementGSPCherokee28 min
Aug 14, 2:09 PM EDTSpecial Weather StatementGSPUnion36 min
Aug 14, 2:13 PM EDTSevere Thunderstorm WarningGSPSpartanburg, Union47 min
Aug 14, 2:22 PM EDTSpecial Weather StatementGSPGreenwood23 min
Aug 14, 2:28 PM EDTSevere Thunderstorm WarningGSPAbbeville, Greenwood47 min
Aug 14, 2:31 PM EDTSpecial Weather StatementGSPAbbeville29 min
Aug 14, 2:33 PM EDTSevere Thunderstorm WarningGSPYork42 min
Aug 14, 2:37 PM EDTSpecial Weather StatementGSPAnderson23 min
Aug 14, 2:47 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville43 min
Aug 14, 3:04 PM EDTSevere Thunderstorm WarningGSPGreenville21 min
Aug 14, 3:09 PM EDTSevere Thunderstorm WarningGSPChester, Union51 min
Aug 14, 3:13 PM EDTSevere Thunderstorm WarningGSPYork47 min
Aug 14, 3:15 PM EDTSevere Thunderstorm WarningGSPGreenville, Pickens45 min
Aug 14, 3:18 PM EDTSevere Thunderstorm WarningGSPLaurens, Spartanburg, Union42 min
Aug 14, 3:22 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville38 min
Aug 14, 3:33 PM EDTSevere Thunderstorm WarningGSPAbbeville, Anderson25 min
Aug 14, 3:47 PM EDTSpecial Weather StatementGSPYork28 min
Aug 14, 3:56 PM EDTSevere Thunderstorm WarningGSPChester31 min
Aug 14, 4:28 PM EDTSpecial Weather StatementGSPChester32 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.