Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 158, NWS Greenville-Spartanburg, SC

August 25, 2021Pickens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 25, 2021, 7:06 PM EDT for Pickens County, South Carolina. It was in force for 24 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 25, 2021, 7:06 PM EDT (23:06 UTC)
Expired: Aug 25, 2021, 7:30 PM EDT
In force: 24 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Pickens County, SC

The radar

The Greer radar (KGSP), 48 km from the middle of the area, began a volume at 23:06 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 nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.1 hours before the alert went out and 247 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: 1222 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1035 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 17 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

837 
WUUS52 KGSP 252306
SVRGSP
SCC077-252330-
/O.NEW.KGSP.SV.W.0158.210825T2306Z-210825T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
706 PM EDT Wed Aug 25 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Northern Pickens County in Upstate South Carolina...

* Until 730 PM EDT.

* At 706 PM EDT, a severe thunderstorm was located 6 miles north of
  Pickens, or 4 miles south of Table Rock State Park, moving
  northwest at 10 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Locations impacted include...
  Table Rock State Park, Jocassee Gorges, Sunset, Pumpkintown,
  Sassafras Mountain, Nine Times and Rocky Bottom.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3503 8291 3508 8278 3507 8278 3507 8277
      3505 8275 3506 8270 3506 8264 3507 8262
      3503 8259 3501 8260 3501 8257 3496 8253
      3489 8283
TIME...MOT...LOC 2306Z 149DEG 8KT 3496 8267 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

ARK

1 follow-up statement

106 
WWUS52 KGSP 252322
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
722 PM EDT Wed Aug 25 2021

SCC077-252331-
/O.EXP.KGSP.SV.W.0158.000000T0000Z-210825T2330Z/
Pickens SC-
722 PM EDT Wed Aug 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN PICKENS COUNTY WILL
EXPIRE AT 730 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 gusty
winds and heavy rain are still possible with this thunderstorm.

To report severe weather to the National Weather Service
Greenville-Spartanburg, call toll free, 1, 800, 2 6 7, 8 1 0 1, or
post 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 3503 8291 3508 8278 3507 8278 3507 8277
      3505 8275 3506 8270 3506 8264 3507 8262
      3503 8259 3501 8260 3501 8257 3496 8253
      3489 8283
TIME...MOT...LOC 2321Z 149DEG 8KT 3498 8269 

$$

ARK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 25, 3:58 PM EDT	Special Weather Statement	GSP	Abbeville	32 min
Aug 25, 5:01 PM EDT	Special Weather Statement	GSP	Spartanburg	29 min
Aug 25, 5:27 PM EDT	Special Weather Statement	GSP	Spartanburg	33 min
Aug 25, 5:34 PM EDT	Areal Flood Advisory	GSP	York	2 hr
Aug 25, 5:54 PM EDT	Special Weather Statement	GSP	York	36 min
Aug 25, 6:25 PM EDT	Special Weather Statement	GSP	Greenville, Pickens	35 min
Aug 25, 6:27 PM EDT	Special Weather Statement	GSP	Cherokee	33 min
Aug 25, 6:29 PM EDT	Special Weather Statement	GSP	Cherokee	31 min
Aug 25, 6:47 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Pickens	43 min
Aug 25, 7:03 PM EDT	Special Weather Statement	GSP	Cherokee	27 min
Aug 25, 7:25 PM EDT	Special Weather Statement	GSP	Cherokee	35 min
Aug 25, 7:55 PM EDT	Special Weather Statement	GSP	Oconee	35 min

Nearby

Severe Thunderstorm Warnings in South 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.