Scattered thunderstorms and storm clusters developed along a weak, stalled frontal boundary during the afternoon. A couple of the storms produced brief damaging wind gusts in northeast Georgia.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS GSP wrote it up.
Scattered thunderstorms and storm clusters developed along a weak, stalled frontal boundary during the afternoon. A couple of the storms produced brief damaging wind gusts in northeast Georgia.
The local office's own words before the first event, 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 the first event at Jun 25, 2:25 PM EST, 52 minutes earlier.
Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 325 PM EDT Sun Jun 25 2023 .SYNOPSIS... Moisture will increase today ahead of an approaching cold front. Showers and thunderstorms will spread across the forecast area this afternoon and evening. A few storms may become strong to severe, mainly across the western half of the forecast area. The cold front pushes across the area on Monday. Severe storms will be possible with the front, especially across the eastern half of the forecast area. Drier conditions return Tuesday into Wednesday. && .NEAR TERM /THROUGH MONDAY NIGHT/... As of 3:05 PM EDT Sunday: The MCS that tracked over KY and then TN earlier has begun to move into the NC mtns over the past hour or so. It's weakened a fair amount as it moved into our area, but could certainly strengthen again especially as it moves off the Escarpment and has more instability to work with. Otherwise, what's left of a persistent upper trof will finally move off the Atlantic Coast today and tonight as upper heights rise atop the CWA and a flattening shortwave ridge axis moves over the southern Appalachians. Convection currently across the upper Midwest is expected to organized into an MCS and drop S/SE along the western periphery of the upper ridge and into the TN Valley this afternoon. It's still looking like the more robust portion of the MCS will fire up across northern AL and north GA this afternoon as instability should be considerably higher over that region. However, current fcst soundings do indicate better destabilization potential (compared to yesterday) across our CWA this afternoon/evening, and it's quite possible that the eastern extent of a larger scale outflow bndy and/or MCV could cause convective initiation across our western zones today. Regardless, terrain effects should allow for sct deep convection that will move SE into the Upstate and Piedmont and sfc-based CAPE in the 1500 to 2000 J/kg range should allow for an uptick in the potential for pulse severe storms. Diurnal convection should diminish by mid- evening or so, however, another area of organized convection still appears to originate over the Midwest and make a run toward the Appalachians between midnight and daybreak. During that time, the ridge axis is expected to have moved over the East Coast, resulting in backing of the mean deep-layer flow more to the W/NW. As such, this activity will have a better chance of making a run toward our western zones. Strong upstream instability and impressive shear pose the potential for a long-lived (albeit weakening) MCS with a well-developed cold pool that could bring strong-to-damaging wind gusts, mainly to the NC mtns. The ability of this system to maintain its strength over the high terrain remains uncertain, but it will need to be watched closely over the near-term. && .SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... As of 130 PM EDT Sunday: An upper trough over the eastern Great Lakes region will slowly progress eastward into the Northeast through the period. Meanwhile, a large upper ridge over Texas will gradually build over the southern CONUS while the center nudges eastward into Louisiana. Upper troughing over the Carolinas will gradually push east through the short term, but will remain over the CWA. Shortwaves embedded within the base of the trough will track periodically over the western Carolinas and northeast Georgia. At the sfc, the cold front that will bring impacts during the near term period (see above) should be east of the CWA and tracking towards the Coastal Carolinas by early Tuesday morning. NW'ly flow behind the FROPA may allow for some scattered showers and thunderstorms to develop Tuesday afternoon, mainly across the far northern tier of the CWA. Drier conditions are expected Tuesday night into Wednesday. Highs will reach the mid to upper 80s east of the mtns each day, with lows in the low to mid 60s. Temps be a few to several degrees cooler across the mtns. && .LONG TERM /THURSDAY THROUGH SUNDAY/... As of 230 PM EDT Sunday: The upper high remains centered over the Ark-La-Tex region Thursday into early Friday before gradually flattening out late Friday into the weekend. Shortwaves will round the northeastern side of the ridge, periodically diving into the western Carolinas Thursday into the weekend. A warm front looks to lift north across the Carolinas Friday into Friday night, with a cold front approaching out of the west during the weekend. This should help keep the pattern active through the long term. Capped PoPs to chance through the fcst period as 12Z global model guidance is not in agreement regarding the timing/coverage of showers and thunderstorms late week into the weekend. Highs will reach the upper 80s to lower 90s each day, leading to temps around 3-6 degrees above climo. && .AVIATION /20Z SUNDAY THROUGH FRIDAY/... At KCLT and elsewhere: Sct convection is expected this afternoon across the mtns and foothills and will likely hold up over the Upstate as well. I included TEMPOs for TSRA at all sites (except KCLT) from roughly 20 to 24z to account for the first wave of activity. I expect the convection to weaken considerably by the time it reaches KCLT, so I just have a VCSH for them beginning around 22z. Another round of organized/decaying convection is expected to make a run for the southern Appalachians toward daybreak. Much of the latest CAM guidance has this activity holding up better as it moves into our area tomorrow morning, so I included PROB30s for TSRA at all taf sites (except KCLT) from roughly 08 to 12z. Again, the activity appears to weaken considerably as it reaches KCLT, so only have VCSH for them. Fog/low stratus will be possible again early Monday in the mtn valleys, but the potential is lower than this morning owing to expected increasing mid/high clouds. Another round of convection is expected to move thru the area tomorrow aftn, but is only mentioned in the KCLT taf since it won't likely impact our area until after 18z. Outlook: Another cold front is expected to bring another round of showers and thunderstorms to the area Monday afternoon/evening. Slightly drier conditions will limit the potential for diurnal convection and overnight restrictions Tuesday thru Thursday. && .GSP WATCHES/WARNINGS/ADVISORIES... GA...None. NC...None. SC...None. && SYNOPSIS...AR NEAR TERM...JPT SHORT TERM...AR LONG TERM...AR AVIATION...JPT
Hazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 154 PM EDT Sun Jun 25 2023 NCZ035>037-056-057-068>072-082-SCZ008-009-013-014-261800- Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston- Mecklenburg-Cabarrus-Union NC-Cherokee-York-Union SC-Chester- 154 PM EDT Sun Jun 25 2023 This Hazardous Weather Outlook is for piedmont North Carolina and upstate South Carolina. .DAY ONE...This afternoon and tonight. A strong line of showers and thunderstorms will track out of eastern Tennessee this afternoon. These storms may survive east of the mountains late this afternoon into early this evening. A few thunderstorms may become strong. The main potential impacts are gusty winds and cloud- to-ground lightning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A cold front will cross the area on Monday and bring a chance of strong to severe thunderstorms during the afternoon. These storms may become organized and potentially produce damaging winds and large hail. .SPOTTER INFORMATION STATEMENT... None. GAZ010-017-018-026-028-029-NCZ033-048>053-058-059-062>065-501>510- SCZ010>012-019-101>109-261800- Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Avery-Madison-Yancey- Mitchell-Swain-Haywood-Buncombe-Graham-Northern Jackson-Macon- Southern Jackson-Transylvania-Henderson-Caldwell Mountains- Greater Caldwell-Burke Mountains-Greater Burke-McDowell Mountains- Eastern McDowell-Rutherford Mountains-Greater Rutherford- Polk Mountains-Eastern Polk-Anderson-Abbeville-Laurens-Greenwood- Oconee Mountains-Pickens Mountains-Greenville Mountains- Greater Oconee-Greater Pickens-Central Greenville- Southern Greenville-Northern Spartanburg-Southern Spartanburg- 154 PM EDT Sun Jun 25 2023 This Hazardous Weather Outlook is for northeast Georgia, western North Carolina and upstate South Carolina. .DAY ONE...This afternoon and tonight. A strong line of showers and thunderstorms will track out of eastern Tennessee this afternoon. These storms may survive east the mountains late this afternoon into early this evening. A few storms may become strong to severe. The main potential impacts are damaging wind gusts and large hail. A line of showers and thunderstorms pushing across East Tennessee tonight may have the potential to bring brief damaging wind gusts as it moves into western North Carolina overnight. Brief heavy rain will also be possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Showers and thunderstorms associated with a cold front on Monday may become strong to briefly severe with damaging winds and large hail as the main threats. .SPOTTER INFORMATION STATEMENT... None. AR
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
222 PM EDT Sun Jun 25 2023
NCZ051-058-062-251900-
Graham NC-Swain NC-Macon NC-
222 PM EDT Sun Jun 25 2023
...Strong thunderstorms will impact portions of northwestern Macon,
Swain and Graham Counties through 300 PM EDT...
At 221 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 9 miles east of Maryville Tennessee to 14
miles north of Robbinsville to 16 miles east of Madisonville
Tennessee. Movement was southeast at 40 mph.
HAZARD...Wind gusts up to 45 mph and half inch 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...
Franklin, Bryson City, Robbinsville, Santeetlah, Smoky
Mountains-Fontana Area, Fontana Lake, Nantahala Lake, Fontana
Village and Smoky Mountains-Deep Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
These storms 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.
&&
LAT...LON 3537 8401 3541 8402 3552 8388 3556 8377
3556 8350 3559 8347 3549 8331 3543 8336
3535 8333 3518 8336 3514 8365 3515 8365
3516 8366 3515 8374 3523 8369 3526 8371
3525 8385 3522 8396 3524 8401 3531 8404
TIME...MOT...LOC 1821Z 309DEG 36KT 3570 8382 3553 8387 3547 8407
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
8Special Weather Statement
National Weather Service Greenville-Spartanburg SC
414 PM EDT Sun Jun 25 2023
GAZ010-017-018-SCZ101-104-252100-
Rabun GA-Stephens GA-Habersham GA-Greater Oconee SC-
Oconee Mountains SC-
414 PM EDT Sun Jun 25 2023
...A strong thunderstorm will impact portions of northwestern
Stephens, northern Habersham, southwestern Rabun and west central
Oconee Counties through 500 PM EDT...
At 413 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles west of Clayton, or over Lake Burton, moving southeast at 35
mph.
HAZARD...Wind gusts up to 40 mph and pea 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...
Clayton, Toccoa, Tiger, Tallulah Falls, Lake Rabun, Lake Burton,
Lakemont, Tallulah Gorge State Park, Long Creek and Batesville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building. Frequent
cloud to ground lightning is occurring 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.
If on or near Lake Burton, Seed Lake, or Lake Rabun, get out of the
water and move indoors or inside a vehicle. Remember, lightning can
strike out to 10 miles from the parent thunderstorm. If you can hear
thunder, you are close enough to be struck by lightning. Move to
safe shelter now! Do not be caught on the water in a thunderstorm.
&&
LAT...LON 3482 8365 3485 8366 3491 8362 3492 8360
3494 8360 3494 8357 3478 8319 3464 8325
3455 8342 3472 8364 3473 8362 3476 8363
3479 8367 3480 8368
TIME...MOT...LOC 2013Z 304DEG 29KT 3483 8356
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
8The Greer radar (KGSP), 120 km away, was scanning. The volume nearest the first event began at 20:17 UTC.
2 thunderstorm wind. Local standard time, as filed.
County comms and power company reported multiple trees and power lines blown down with widespread power outages across the southern part of Rabun County.
Ham radio operator reported multiple trees blown down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2023Every state in 2023This day in weather historyWarnings in Georgia, June 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1120265, 1120268.