Alert archive / South Carolina / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 85, NWS Greenville-Spartanburg, SC

June 11, 2023Anderson County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 11, 2023, 10:07 PM EDT for Anderson County, South Carolina. It was in force for 34 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: Jun 11, 2023, 10:07 PM EDT (02:07 UTC)
Expired: Jun 11, 2023, 10:41 PM EDT
In force: 34 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Anderson County, SC

The radar

The Greer radar (KGSP), 56 km from the middle of the area, began a volume at 02:09 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, 2.1 hours before the alert went out and 214 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: 721 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 1139 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 217 m²/s²
0-3 km storm-relative helicity: 252 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.5

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 Jun 11, 9:22 PM EDT, 45 minutes earlier.

Area forecast discussion, Jun 11, 9:22 PM EDT, 45 minutes before

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Hazardous weather outlook, Jun 11, 3:56 PM EDT, 6 hours 11 minutes before

Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
356 PM EDT Sun Jun 11 2023

NCZ033-035>037-049-050-056-057-068>072-082-501>508-SCZ008-009-
012>014-019-122000-
Avery-Alexander-Iredell-Davie-Yancey-Mitchell-Catawba-Rowan-
Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union NC-
Caldwell Mountains-Greater Caldwell-Burke Mountains-Greater Burke-
McDowell Mountains-Eastern McDowell-Rutherford Mountains-
Greater Rutherford-Cherokee-York-Laurens-Union SC-Chester-Greenwood-
356 PM EDT Sun Jun 11 2023

This Hazardous Weather Outlook is for piedmont North Carolina,
western North Carolina and upstate South Carolina.

.DAY ONE...This afternoon and tonight.

A cold front will approach the area out of the west this evening,
and into the overnight hours, bringing a second round of showers and
thunderstorms. The main potential hazards with any storms that become
severe are isolated damaging wind gusts, cloud-to-ground lightning,
and locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

GAZ010-017-018-026-028-029-NCZ048-051>053-058-059-062>065-509-510-
SCZ010-011-101>109-122000-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Madison-Swain-Haywood-
Buncombe-Graham-Northern Jackson-Macon-Southern Jackson-Transylvania-
Henderson-Polk Mountains-Eastern Polk-Anderson-Abbeville-
Oconee Mountains-Pickens Mountains-Greenville Mountains-
Greater Oconee-Greater Pickens-Central Greenville-
Southern Greenville-Northern Spartanburg-Southern Spartanburg-
356 PM EDT Sun Jun 11 2023

This Hazardous Weather Outlook is for northeast Georgia, western
North Carolina and upstate South Carolina.

.DAY ONE...This afternoon and tonight.

A cold front will approach the area out of the west this evening,
and into the overnight hours, bringing a second round of showers and
thunderstorms. The main potential hazards with any storms that become
severe are damaging wind gusts, large hail, cloud-to-ground
lightning, and locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to forward any reports of large hail,
damaging winds, tornadoes, or flash flooding to our office.

In the hours before

Special weather statement, Jun 11, 7:57 PM EDT, 2 hours 10 minutes before

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
757 PM EDT Sun Jun 11 2023

GAZ017-018-120030-
Stephens GA-Habersham GA-
757 PM EDT Sun Jun 11 2023

...A strong thunderstorm will impact portions of southwestern
Stephens and southern Habersham Counties through 830 PM EDT...

At 757 PM EDT, Doppler radar was tracking a strong thunderstorm 10
miles southwest of Clarkesville, or near Alto, moving northeast at 30
mph.

HAZARD...Winds in excess of 40 mph and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Cornelia, Baldwin, Demorest, Mount Airy, Alto, Raoul and Boydville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3451 8366 3464 8340 3450 8331 3447 8342
      3448 8347 3449 8354 3446 8358 3445 8359
      3445 8360 3443 8362 3450 8367
TIME...MOT...LOC 2357Z 244DEG 28KT 3447 8361

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

LANE

Local storm report, Jun 11, 9:00 PM EDT, 1 hour 7 minutes before

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Special weather statement, Jun 11, 9:35 PM EDT, 32 minutes before

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Special weather statement, Jun 11, 9:59 PM EDT, 8 minutes before

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Special weather statement, Jun 11, 10:02 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
Jun 12, 3:20 PM EDT	Special Weather Statement	GSP	Cabarrus, Mecklenburg	40 min
Jun 12, 3:34 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Mecklenburg	31 min
Jun 12, 3:52 PM EDT	Special Weather Statement	GSP	Union	23 min
Jun 11, 9:59 PM EDT	Special Weather Statement	GSP	Anderson	31 min
Jun 11, 10:58 PM EDT	Special Weather Statement	GSP	Anderson	32 min
Jun 11, 11:27 PM EDT	Special Weather Statement	GSP	Greenville	33 min
Jun 11, 11:35 PM EDT	Special Weather Statement	GSP	Oconee	25 min
Jun 12, 12:04 AM EDT	Special Weather Statement	GSP	Greenville	26 min
Jun 12, 12:25 AM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Pickens	35 min
Jun 12, 12:32 AM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Pickens	43 min
Jun 12, 12:34 AM EDT	Special Weather Statement	GSP	Greenville	26 min
Jun 12, 12:40 AM EDT	Special Weather Statement	GSP	Greenville	35 min
Jun 12, 1:22 AM EDT	Special Weather Statement	GSP	Greenville	23 min
Jun 12, 1:24 AM EDT	Special Weather Statement	GSP	Anderson	36 min
Jun 12, 1:45 AM EDT	Special Weather Statement	GSP	Greenville	30 min
Jun 12, 1:51 AM EDT	Special Weather Statement	GSP	Anderson	24 min
Jun 12, 2:15 AM EDT	Special Weather Statement	GSP	Spartanburg	45 min
Jun 12, 2:17 AM EDT	Special Weather Statement	GSP	Abbeville	43 min
Jun 12, 2:31 AM EDT	Special Weather Statement	GSP	Anderson	29 min
Jun 12, 2:56 AM EDT	Special Weather Statement	GSP	Greenwood, Laurens	34 min
Jun 12, 3:34 AM EDT	Special Weather Statement	GSP	Greenwood	26 min
Jun 12, 4:18 AM EDT	Areal Flood Advisory	GSP	Greenville	3 hr
Jun 12, 4:25 AM EDT	Areal Flood Advisory	GSP	Greenville	3 hr
Jun 12, 1:33 PM EDT	Areal Flood Advisory	GSP	Greenville	5 hr
Jun 11, 8:35 PM EDT	Severe Thunderstorm Warning	GSP	Franklin, Stephens	55 min
Jun 11, 9:35 PM EDT	Special Weather Statement	GSP	Stephens	25 min
Jun 11, 10:02 PM EDT	Special Weather Statement	GSP	Stephens	28 min
Jun 11, 11:03 PM EDT	Special Weather Statement	GSP	Stephens	57 min
Jun 12, 1:27 AM EDT	Special Weather Statement	GSP	Franklin, Hart	33 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2023 Every severe thunderstorm warning in 2023

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.