A weak trough of low pressure lingering across the area along with deep moisture extending across the region led to a few severe thunderstorms across South Carolina.
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 CHS wrote it up.
A weak trough of low pressure lingering across the area along with deep moisture extending across the region led to a few severe thunderstorms across South Carolina.
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 Charleston, SC wrote its last area forecast discussion before the first event at Jun 9, 2:33 PM EST, 1 hour 32 minutes earlier.
Area Forecast Discussion National Weather Service Charleston SC 333 PM EDT Tue Jun 9 2020 .SYNOPSIS... A weak trough will linger over the area through Wednesday. A cold front will then stall over the area Thursday into the weekend. Another cold front will approach the area early next week. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/... As of 330 PM: Latest water vapor images indicated that a band of deeper moisture extended from the remnants of Cristobal, across portions of SC/NC, to the Bahamas. Recently observed sfc dewpoints ranged from the mid 70s inland to the upper 70s along the coast. SPC mesoanalysis indicated MLCAPE between 1500-2000 J/kg across most of the CWA, with DCAPE as high as 1100 J/kg. Visible satellite indicated a weak sea breeze just inland from the beaches. Showers and thunderstorms will likely continue to develop along and west of the sea breeze this afternoon and evening. An approaching mid-level disturbance and established cold pool will cross SE GA through this evening. These storms should push across SE GA, sliding off the GA coast before dissipating. The environment will support periods of heavy downpours and possibly isolated damaging wind gusts. Convection should generally end by midnight. Using a blend of MOS, low temperatures are forecast to range in the mid 70s. && .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/... Unsettled and muggy conditions on tap for the mid to late week period. A mid level ridge will sit over the western Atlantic while broad troughing moves into the eastern U.S. At the surface, a cold front will slowly approach from the west, likely entering the forecast area on Thursday before stalling out over the region through Friday. This synoptic setup will favor a deep moisture feed into the area. Scattered to numerous showers and thunderstorms are forecast to develop each day, especially Thursday and Friday with the front in the vicinity. Coverage will peak during the daytime when instability is maximized, but activity is possible overnight as well. Organized severe weather threat appears low given lack of shear, however a couple stronger storms are certainly possible with locally damaging wind gusts being the primary the hazard. Perhaps the bigger threat would be heavy rainfall with PWats near 2 inches and fairly weak storm motions. High temperatures will peak in the upper 80s to around 90 Wednesday and Thursday, however elevated dew points will make it feel hotter. Highs on Friday are only expected to make it to the mid 80s. Lows overnight will be much more mild than normal, staying in the low to mid 70s. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... A fairly unsettled weather pattern is anticipated during the weekend as the area remains positioned become a ridge of high pressure offshore and to the south and a trough of low pressure slowly expanding across the area from the north. The setup should favor few to scattered showers and thunderstorms during the weekend, but then slightly less coverage heading through early next week as a cold front arrives from the west/northwest and pushes the bulk of deepest moisture offshore. Afternoon highs should range in the mid/upper 80s this weekend and early next week. Overnight lows should range in the upper 60s/lower 70s this weekend, then mid/upper 60s away from the coast early next week. && .AVIATION /20Z TUESDAY THROUGH SUNDAY/... Scattered showers and isolated thunderstorms will develop along a sea breeze across the CHS Tri-county. The convection is expected to remain just east of KCHS, the TAF will feature VCSH until 23Z. A cluster of thunderstorms should develop ahead of an approaching disturbance, thunderstorms may pass near or over KSAV between 20-24Z, highlighted with a TEMPO. Periods of ground fog may develop over areas that rain this evening. At this time, the TAFs will not feature restrictive ceilings or visibility tonight. Showers are forecast to develop along a sea breeze late Wednesday morning, highlighted with VCSH at 16Z. Extended Aviation Outlook: Tempo flight restrictions due to showers and thunderstorms are possible each day, especially Thursday and Friday. && .MARINE... Tonight: The coastal waters will remain between a cold front near the Mississippi River Valley and sfc high pressure centered over the western Atlantic. Southwest winds are expected to generally range between 5-10 kts across the waters tonight. Seas are forecast to range between 2-3 ft. Wednesday through Sunday: A cold front is expected to approach from the west then stall over the region through late week. This pattern will favor south to southeast winds over the local waters. Speeds will largely remain 15 knots or less, however a brief increase to the 15-20 knot range is possible on Thursday. Winds/seas are then expected to remain well below Small Craft Advisory levels over the weekend and early next week with wind speeds generally at or below 10-15 kts and seas no higher than 2-3 ft. && .EQUIPMENT... The KCLX radar will remain out of service for equipment upgrades through June 11, and radar data will not be available during this time. Neighboring radars include: Wilmington, NC (KLTX); Jacksonville, FL (KJAX); Moody AFB, GA (KVAX); Warner Robins AFB, GA (KJGX); and Columbia, SC (KCAE). && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && NEAR TERM...NED SHORT TERM...ETM LONG TERM...DPB AVIATION...NED/ETM MARINE...NED/ETM EQUIPMENT...
Hazardous Weather Outlook National Weather Service Charleston SC 1133 AM EDT Tue Jun 9 2020 AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040- 042>045-047>052-101545- Charleston Harbor- Waters from South Santee River to Edisto Beach SC out 20 NM- Waters from Edisto Beach SC to Savannah GA out 20 NM- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- Jenkins-Screven-Candler-Bulloch-Effingham-Tattnall-Evans- Inland Bryan-Coastal Bryan-Inland Chatham-Coastal Chatham-Long- Inland Liberty-Coastal Liberty-Inland McIntosh-Coastal McIntosh- Allendale-Hampton-Inland Colleton-Dorchester-Inland Berkeley- Inland Jasper-Beaufort-Coastal Colleton-Charleston-Coastal Jasper- Tidal Berkeley- 1133 AM EDT Tue Jun 9 2020 This Hazardous Weather Outlook is for Atlantic coastal waters, southeast Georgia and southeast South Carolina. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
Special Weather Statement
National Weather Service Charleston SC
250 PM EDT Tue Jun 9 2020
SCZ045-050-052-091915-
Inland Berkeley-Tidal Berkeley-Charleston-
250 PM EDT Tue Jun 9 2020
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHARLESTON AND
BERKELEY COUNTIES...
At 249 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm over Mount Pleasant Regional Airport, or near
Mount Pleasant, moving south at 5 mph.
HAZARD...strong winds 45 to 55 mph.
IMPACT...Expect minor damage to tree limbs and blowing around of
light, unsecured objects.
Some locations in the path of this storm include...
Mount Pleasant, Goose Creek, Hanahan, Naval Weapons Station
Charleston, Daniel Island, Awendaw, Boone Hall Plantation and Mount
Pleasant Regional Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Report damage directly to the Charleston National Weather Service at
1-888-383-2024 when it is safe to do so. You can also email your
report to nws.charlestonsc@noaa.gov.
&&
LAT...LON 3320 7980 3304 7956 3277 7985 3297 8002
TIME...MOT...LOC 1849Z 008DEG 6KT 3293 7978Special Weather Statement
National Weather Service Charleston SC
349 PM EDT Tue Jun 9 2020
GAZ118-119-092015-
Coastal Chatham-Inland Chatham-
349 PM EDT Tue Jun 9 2020
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHATHAM COUNTY...
At 349 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm over Thunderbolt, or over Midtown Savannah,
moving northeast at 10 mph.
HAZARD...strong winds 45 to 55 mph.
IMPACT...Expect minor damage to tree limbs and blowing around of
light, unsecured objects.
Some locations in the path of this storm include...
Wilmington Island, Hunter Army Airfield, Midtown Savannah, Downtown
Savannah, Windsor Forest, Montgomery, Thunderbolt and Vernonburg.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Report damage directly to the Charleston National Weather Service at
1-888-383-2024 when it is safe to do so. You can also email your
report to nws.charlestonsc@noaa.gov.
&&
LAT...LON 3204 8116 3210 8108 3209 8107 3208 8104
3210 8101 3210 8100 3204 8093 3194 8092
3191 8110
TIME...MOT...LOC 1949Z 242DEG 10KT 3201 8106Special Weather Statement
National Weather Service Charleston SC
421 PM EDT Tue Jun 9 2020
GAZ119-SCZ048-051-092045-
Coastal Chatham-Coastal Jasper-Beaufort-
421 PM EDT Tue Jun 9 2020
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHATHAM...BEAUFORT
AND JASPER COUNTIES...
At 420 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm over Bellinger Hill Area, moving east at 5 mph.
HAZARD...strong winds 45 to 55 mph.
IMPACT...Expect minor damage to tree limbs and blowing around of
light, unsecured objects.
Some locations in the path of this storm include...
Bluffton, Bellinger Hill Area and Hutchinson Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Report damage directly to the Charleston National Weather Service at
1-888-383-2024 when it is safe to do so. You can also email your
report to nws.charlestonsc@noaa.gov.
&&
LAT...LON 3208 8106 3221 8104 3220 8084 3203 8086
TIME...MOT...LOC 2020Z 275DEG 6KT 3214 8099The national radar mosaic for the moment the first event began.
2 thunderstorm wind. Local standard time, as filed.
The Beaufort County 911 Call Center reported a tree down near the intersection of Old River Road and Rose DHU Creek Plantation.
The Jasper County 911 Call Center reported a tree down on a power line along Old House Road near Nimmer Subdivision Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2020Every state in 2020This day in weather historyWarnings in South Carolina, June 2020
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: 900172, 900173.