A digging trough with strong mid-level winds helped trigger and develop a well organized mesoscale convective system across the southeast US on June 7th. Robust low level moisture and dry air aloft produced an ideal environment for strong instability to mix down strong winds to the surface.
Every event with a place to put it. Tap one for its entry below.
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 CAE wrote it up.
A digging trough with strong mid-level winds helped trigger and develop a well organized mesoscale convective system across the southeast US on June 7th. Robust low level moisture and dry air aloft produced an ideal environment for strong instability to mix down strong winds to the surface. This resulted in a wide and long lived swath of damaging straight line winds throughout western and central SC.
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 Columbia, SC wrote its last area forecast discussion before the first event at Jun 7, 6:34 PM EST, 7 minutes earlier.
Area Forecast Discussion National Weather Service Columbia SC 734 PM EDT Sat Jun 7 2025 .SYNOPSIS... Severe weather potential increases somewhat starting today, with additional chances for strong to severe thunderstorms both Sunday and Monday as an active weather pattern develops. Conditions are favorable for showers and thunderstorms to push through the Southeast US during the next seven days, though we should transition to less organized summertime pulse convection by late next week. && .NEAR TERM /UNTIL 7 AM SUNDAY MORNING/... Key Message(s): - Severe Thunderstorm Watch until Midnight for all of our counties west of I77/I26 - Damaging winds and small hail are the biggest threats with these storms as they push eastward A robust MCS has continued marching eastward this evening and continues to pose a threat for severe thunderstorm hazards across the CSRA and Midlands. A Severe Thunderstorm Watch has been issued as a result. The downstream environment is still pretty robust, with 2000 j/kg of SBCAPE, DCAPE values of 1200+ j/kg, and steep low-level lapse rates around 7.5 c/km per SPC mesoanalysis. While this cluster is likely to ebb and flow with strength over the next couple of hours, the aforementioned environmental characteristics should support severe thunderstorms as this cluster continues pushing eastward. Look for damaging wind gusts in excess of 60 mph and hail up to nickel size to be the primary threats. There is a lot of lightning associated with the strongest convection, so that is also a hazard to watch out for. Convection remains a distinct possibility overnight, especially after 09z, but the current hazards are taking priority over that right now. Will revisit that threat later this evening as more guidance comes in. && .SHORT TERM /7 AM SUNDAY MORNING THROUGH MONDAY NIGHT/... Key Message(s): - Severe weather possible again on Sunday and Monday. - The primary severe hazard both days will be damaging wind gusts. A series of shortwaves will likely trigger the development of strong to severe thunderstorms across portions of the forecast area during the short term. The entire CWA remains in a Slight (2/5) risk for severe weather on Day 2 (Sunday) and Day 3 (Monday) with damaging wind gusts being identified as the primary severe weather risk. While confidence in exact timing of the convection remains low, latest guidance shows the passage of the aforementioned shortwaves Sunday afternoon and evening and again Monday evening into early Monday night. The second shortwave will be further supported by the approach of a larger trough moving into the Great Lakes region. This would suggest that while the lift may be stronger on Monday, the timing of the shortwave on Sunday may be more favorable for severe weather. CAMs indicate that the greatest risk for thunderstorms on Sunday will be along and south/east of I-20 but any lingering mesoscale boundaries from today's weather could aid in convective development, so the entire region should remain weather aware both Sunday and Monday. There should be more clouds around during the short term, especially Sunday, which may play a role in thunderstorm development in addition to daytime temperatures, which will likely be cooler than today, especially in the northern and western CWA. Winds may be gusty at times on Sunday, especially on Lake Murray but a Lake Wind Advisory does not appear to be needed at this time. && .LONG TERM /TUESDAY THROUGH SATURDAY/... Key Message(s): - Shower and thunderstorm chances continue into the extended period as the overall pattern becomes increasingly summer like. An upper trough passes to our north Tuesday into Tuesday night, being replaced by upper ridging for the remainder of the long term. With the extra support in place, Tuesday may be another day favorable for organized showers and thunderstorms. Beyond this, temperatures should gradually climb or hold steady with more summer like heat and humidity. With an upper ridge moving overhead, any convection will likely be disorganized and limited in aerial coverage, especially late in the extended. A front may stall somewhere across the region for the mid to late week period, which would aid in convective development. With hot temperatures inland, the sea breeze may also trigger a few showers and thunderstorms, especially near the lingering frontal boundary. && .AVIATION /00Z SUNDAY THROUGH THURSDAY/... VFR conditions expected through the afternoon before thunderstorms move across the region this evening. VFR conditions continue this afternoon with only some fair weather cumulus. Gusty winds out of the southwest are expected as well with some gusts to around 25 knots likely. Conditions deteriorate this evening as a strong line of storms pushes towards the area from the west. A prob30 group for TSRA is included for now as timing confidence is relatively low. Overall, confidence is higher in impacts at AGS and DNL compared to the other TAF sites. Outflow boundaries and shortwave activity may also allow thunderstorms to redevelop late tonight and early Sunday morning. Gusty winds will pick back up around 15Z Sunday out of the SW with gusts around 25 kts in the afternoon and more thunderstorms possibly, especially in the eastern FA near OGB. EXTENDED AVIATION OUTLOOK...Deep moisture remains in place through mid-week, leading to potential early morning restrictions and diurnal convection each day. Thunderstorms over the weekend may also bring restrictions along with gusty and erratic winds. && .CAE WATCHES/WARNINGS/ADVISORIES... SC...None. GA...None. && SYNOPSIS... NEAR TERM... SHORT TERM... LONG TERM... AVIATION...
The Greer radar (KGSP), 100 km away, was scanning. The volume nearest the first event began at 23:42 UTC.
44 thunderstorm wind. Local standard time, as filed.
McCormick County Dispatch reported trees down throughout the county. Time Estimated by radar.
McCormick County Dispatch reported trees down throughout the county. Time Estimated by radar.
McCormick County Dispatch reported trees down throughout the county. Time Estimated by radar.
Edgefield County Dispatch reported trees down along Red Hill Rd. Time estimated by radar.
Edgefield County Dispatch reported trees down along Republican Rd. Time estimated by radar.
Edgefield County dispatch reports trees down along Hwy 378 in Edgefield County. Time estimated by radar.
SC Highway Patrol reported trees down at the intersection of SC 39 and SC 34. Time estimated by radar.
Public reports widespread trees and powerlines down across Saluda County. Time estimated based on radar.
Edgefield County Dispatch reported trees down along Hwy 25 North. Time estimated by radar.
Aiken County EM Office reports trees down at the intersection of Hammond Dr and Woodlawn Avenue. Time estimated by radar.
Public reports widespread tree and powerline damage throughout Newberry County. Time estimated by radar.
Aiken County EM reported numerous trees and powerlines in the Clearwater area of Aiken County. Time estimated by radar.
SC Highway Patrol reports a tree down along I20. Time estimated by radar.
SC Highway Patrol reports a tree down along I26. Time estimated by radar.
Aiken County EM reported numerous trees and powerlines in the Graniteville area of Aiken County. Time estimated by radar.
SC Highway Patrol reports a tree down at the intersection of US 378 and Spann Rd. Time estimated by radar.
SC Highway Patrol reports a tree down at the intersection of Amicks Ferry Rd and Lake Tide Dr. Time estimated by radar.
Aiken County EM office reported a tree down at the intersection of Nazarene Rd and Wire Rd. Time estimated by radar.
SC Highway Patrol reports a tree down in the roadway along US 278 at SC 19. Time estimated by radar.
Trained Spotter estimated wind gusts near 60 mph in the Persimmon Grove neighborhood in Lexington. Time estimated by radar.
Fairfield County dispatch reported numerous trees down throughout the county. Time estimated by radar.
SC Highway Patrol reports powerlines down blocking the roadway along North Lake Dr. Time estimated by radar.
SC Highway Patrol reports a tree down along Pet Sites Rd. Time estimated by radar.
SC Highway Patrol reports a tree down in the roadway at I20 and Sunset Blvd. Time estimated by radar.
SC Highway Patrol reports a tree down in the roadway at Romain Dr and Cambout St. Time estimated by radar.
Video posted on social media of numerous trees down along I20 near the bridge over the Broad River on the Richland County side. Trees were blocking the right two lanes of traffic. Time estimated based on radar.
KCAE recorded a peak wind gust of 60 mph at 9:11pm.
Barnwell dispatch reported numerous trees and power lines down across the county.
Orangeburg County EM Reported trees down at 1400 Springfield Rd. Time estimated based on radar.
SC Highway Patrol reports a tree down blocking the roadway on I77 and SC48. Time estimated by radar.
NWS Employee estimated wind gusts to 60 mph in Blythewood.
SC Highway Patrol reported trees down in the road along Running Fox Rd. Time estimated by radar.
Orangeburg County EM Reported trees down at 5967 Savannah Highway. Time estimated based on radar.
Social media report of large trees limbs snapped in Hopkins.
Orangeburg County EM Reported trees down at 7099 North Rd. Time estimated based on radar.
SC Highway Patrol reports trees blocking the roadway at the intersection of US 601 and McCord Ferry Rd. Time estimated by radar.
Orangeburg County EM Reported tree down at the intersection of Sabb Rd and Shillings Bridge Rd. Time estimated based on radar.
Orangeburg County EM reports trees down at 299 Beason Rd. Time estimated by radar.
Bamberg County Dispatch reported trees down on powerlines along Heritage Hwy in Bamberg County. Time estimated by radar.
Orangeburg County EM Reported trees down in the town of Rowesville. Time estimated based on radar.
Orangeburg County EM reports trees down at 3791 Belleville Road. Time estimated by radar.
Sumter Fire Dept reported a tree on power lines at the intersection of Hwy 261 and Mine Hill Rd. Time estimated by radar.
Orangeburg County EM Reported tree down along Vance Rd. Time estimated based on radar.
Sumter Fire reported a tree on power line at Guignard Pkwy and Pocalla Rd.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2025Every state in 2025This day in weather historyWarnings in South Carolina, June 2025
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 2026-10-01. Each event’s entry at NCEI: 1254432, 1254435, 1254436, 1254449, 1254451, 1254452, 1254453, 1254454, 1254458, 1254463, 1254587, 1254591, 1254592, 1254593, 1254595, 1254594, 1254597, 1254598, 1254599, 1254628, 1254607, 1254608, 1254600, 1254609, 1254610, 1254611, 1254629, 1254612, 1254613, 1254614, 1254630, 1254615, 1254616, 1254617, 1254618, 1254619, 1254620, 1254621, 1254622, 1254623, and more.