Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 76, NWS Columbia, SC

August 31, 20214 counties in South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Aug 31, 2021, 2:59 PM EDT for 4 counties in South Carolina. It was in force for 46 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 31, 2021, 2:59 PM EDT (18:59 UTC)
Expired: Aug 31, 2021, 3:45 PM EDT
In force: 46 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Edgefield County, SC, McCormick County, SC, Newberry County, SC, Saluda County, SC

The radar

The Columbia radar (KCAE), 83 km from the middle of the area, began a volume at 19:00 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

Time	Report	Where	Remark
Aug 31, 3:10 PM EDT	TSTM WND DMG	1 N Edgefield, SC	TREE DOWN ON BUNCOMBE ST IN EDGEFIELD. TIME ESTIMATED.

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

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 7.0 hours before the alert went out and 226 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: 327 J/kg
Mixed-layer CIN: -117 J/kg
Mixed-layer LCL: 1012 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

237 
WUUS52 KCAE 311859
SVRCAE
SCC037-065-071-081-311945-
/O.NEW.KCAE.SV.W.0076.210831T1859Z-210831T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
259 PM EDT Tue Aug 31 2021

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Southwestern Newberry County in central South Carolina...
  Northwestern Edgefield County in central South Carolina...
  Central Saluda County in central South Carolina...
  Northeastern McCormick County in central South Carolina...

* Until 345 PM EDT.

* At 259 PM EDT, a severe thunderstorm was located 10 miles northwest
  of Edgefield, or 20 miles south of Greenwood, moving northeast at
  45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Edgefield, Saluda, McCormick, Mccormick County Airport, Saluda
  County Airport, Parksville, Plum Branch, Lick Fork Campground,
  Saluda Co Sheriff's Office, Good Hope, Pleasant Lane, Northside
  Fire Station Main, Hollywood Elementary School, Emory, Chappells,
  Chappells Fire Station, Cleora, Scurry Airport, Hickory Grove and
  Colliers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3402 8224 3397 8218 3399 8210 3398 8205
      3395 8204 3396 8201 3409 8192 3413 8187
      3415 8190 3419 8192 3420 8194 3430 8189
      3410 8158 3363 8207 3390 8232
TIME...MOT...LOC 1859Z 225DEG 39KT 3390 8207 

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

$$

awp

1 follow-up statement

478 
WWUS52 KCAE 311915
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
315 PM EDT Tue Aug 31 2021

SCC037-065-071-081-311945-
/O.CON.KCAE.SV.W.0076.000000T0000Z-210831T1945Z/
Newberry SC-Edgefield SC-Saluda SC-McCormick SC-
315 PM EDT Tue Aug 31 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR SOUTHWESTERN NEWBERRY...NORTHWESTERN EDGEFIELD...CENTRAL SALUDA
AND EAST CENTRAL MCCORMICK COUNTIES...

At 314 PM EDT, severe thunderstorms were located along a line
extending from near Greenwood to 10 miles west of Saluda County
Airport to Edgefield, moving northeast at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Edgefield, Saluda, Saluda County Airport, Saluda Co Sheriff's Office,
Good Hope, Pleasant Lane, Northside Fire Station Main, Hollywood
Elementary School, Emory, Chappells, Chappells Fire Station, Cleora,
Scurry Airport, Hickory Grove, Vaughnville and Saluda High School.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3397 8218 3399 8210 3398 8205 3395 8204
      3396 8201 3409 8192 3413 8187 3415 8190
      3419 8192 3420 8194 3430 8189 3410 8158
      3371 8199 3393 8216
TIME...MOT...LOC 1914Z 211DEG 38KT 3411 8214 3399 8197 3380 8190 

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

$$

awp

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 31, 2:21 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, McCormick	39 min
Aug 31, 3:16 PM EDT	Special Weather Statement	CAE	Richland	29 min
Aug 31, 3:24 PM EDT	Special Weather Statement	CAE	Calhoun	36 min
Aug 31, 3:56 PM EDT	Special Weather Statement	CAE	Orangeburg	34 min
Aug 31, 4:11 PM EDT	Special Weather Statement	CAE	Aiken	34 min
Aug 31, 4:37 PM EDT	Special Weather Statement	CAE	Calhoun, Orangeburg	23 min
Aug 31, 4:43 PM EDT	Special Weather Statement	CAE	Kershaw	32 min
Aug 31, 5:07 PM EDT	Special Weather Statement	CAE	Lancaster	38 min
Aug 31, 5:10 PM EDT	Special Weather Statement	CAE	Lexington	35 min
Aug 31, 5:19 PM EDT	Special Weather Statement	CAE	Bamberg	26 min
Aug 31, 6:01 PM EDT	Special Weather Statement	CAE	Chesterfield	29 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.