Alert archive / South Carolina / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 236, NWS Greenville-Spartanburg, SC

August 17, 2024Laurens County, Spartanburg County, Union County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 17, 2024, 8:07 PM EDT for Laurens County, Spartanburg County, Union County, South Carolina. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 17, 2024, 8:07 PM EDT (00:07 UTC)
Expired: Aug 17, 2024, 9:00 PM EDT
In force: 53 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Laurens County, SC, Spartanburg County, SC, Union County, SC

The radar

The Greer radar (KGSP), 38 km from the middle of the area, began a volume at 00:07 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 00:00Z, 0.1 hours before the alert went out and 284 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: 2551 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1301 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 23 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 17, 7:28 PM EDT, 39 minutes earlier.

Area forecast discussion, Aug 17, 7:28 PM EDT, 39 minutes before

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Hazardous weather outlook, Aug 17, 7:38 PM EDT, 29 minutes before

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In the hours before

Local storm report, Aug 17, 6:29 PM EDT, 1 hour 38 minutes before

Preliminary Local Storm Report
National Weather Service Greenville-Spartanburg SC
629 PM EDT Sat Aug 17 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0505 PM     Tstm Wnd Dmg     2 NNW Columbus          35.27N 82.22W
08/17/2024                   Polk               NC   911 Call Center

            911 Call Centers received numerous reports
            of downed trees across Polk County. Duke
            Energy reports a couple hundred customers
            without power near White Oak Mountain Rd in
            the Stearns community and near Skyuka Rd
            just west of Columbus. Additional power
            outages were reported further east near Bill
            Collins Rd and Smith Waldrop Rd SSE of Mill
            Spring. Time estimated from radar.

&&

JMP

Special weather statement, Aug 17, 6:30 PM EDT, 1 hour 37 minutes before

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
630 PM EDT Sat Aug 17 2024

GAZ026-028-029-172315-
Elbert GA-Hart GA-Franklin GA-
630 PM EDT Sat Aug 17 2024

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN FRANKLIN...
NORTHWESTERN ELBERT AND SOUTHWESTERN HART COUNTIES THROUGH 715 PM
EDT...

At 629 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Carnesville, or near Franklin Springs, moving east
at 15 mph.

HAZARD...Wind gusts up to 50 mph and pea to dime size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to outdoor objects is
         possible.

Locations impacted include...
Carnesville, Hartwell, Royston, Bowman, Canon, Franklin Springs,
Victoria Bryant State Park, Dewy Rose, Nuberg, and Vanna.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning will occur with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northeastern Georgia.

&&

LAT...LON 3411 8303 3412 8305 3415 8307 3417 8310
      3423 8308 3427 8312 3424 8317 3425 8320
      3424 8325 3425 8327 3437 8323 3434 8286
      3408 8294
TIME...MOT...LOC 2229Z 283DEG 12KT 3427 8317

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

8

Local storm report, Aug 17, 6:41 PM EDT, 1 hour 26 minutes before

Preliminary Local Storm Report
National Weather Service Greenville-Spartanburg SC
641 PM EDT Sat Aug 17 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0545 PM     Tstm Wnd Dmg     Fontana Village         35.43N 83.82W
08/17/2024                   Graham             NC   911 Call Center

            Graham County 911 Call Center reports
            numerous trees down in Fontana Village. Time
            estimated from radar.

&&

JMP

Local storm report, Aug 17, 7:48 PM EDT, 19 minutes before

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Local storm report, Aug 17, 8:01 PM EDT, 6 minutes before

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Local storm report, Aug 17, 8:02 PM EDT, 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 9:46 PM EDT	Special Weather Statement	GSP	Cleveland	29 min
Aug 18, 3:36 PM EDT	Special Weather Statement	GSP	Polk	24 min
Aug 18, 4:39 PM EDT	Special Weather Statement	GSP	Alexander	66 min
Aug 18, 5:07 PM EDT	Severe Thunderstorm Warning	GSP	Davie, Iredell	53 min
Aug 18, 5:42 PM EDT	Severe Thunderstorm Warning	GSP	Catawba, Iredell, Lincoln, Rowan	48 min
Aug 18, 6:01 PM EDT	Severe Thunderstorm Warning	GSP	Davie	23 min
Aug 18, 6:17 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Rowan	28 min
Aug 18, 6:30 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Catawba, Iredell, Mecklenburg, Rowan	44 min
Aug 18, 6:49 PM EDT	Special Weather Statement	GSP	Rowan	11 min
Aug 18, 7:23 PM EDT	Special Weather Statement	GSP	Lincoln	52 min
Aug 17, 8:22 PM EDT	Special Weather Statement	GSP	Abbeville	23 min
Aug 17, 8:38 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Greenwood	52 min
Aug 17, 8:58 PM EDT	Special Weather Statement	GSP	Greenwood, Laurens	47 min
Aug 17, 9:13 PM EDT	Severe Thunderstorm Warning	GSP	Laurens	32 min
Aug 17, 9:43 PM EDT	Areal Flood Advisory	GSP	Laurens	3 hr
Aug 18, 3:43 PM EDT	Special Weather Statement	GSP	Cherokee	47 min
Aug 18, 4:21 PM EDT	Special Weather Statement	GSP	Cherokee	39 min
Aug 18, 4:31 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, York	44 min
Aug 18, 4:56 PM EDT	Special Weather Statement	GSP	York	64 min
Aug 18, 6:07 PM EDT	Special Weather Statement	GSP	Chester	38 min
Aug 18, 7:46 PM EDT	Special Weather Statement	GSP	York	44 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2024 Every severe thunderstorm warning in 2024

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.