Onshore winds and long period swell energy from distant Hurricane Larry combined to produce an elevated risk of rip currents along the southeast South Carolina coast.
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.
Onshore winds and long period swell energy from distant Hurricane Larry combined to produce an elevated risk of rip currents along the southeast South Carolina coast.
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 Sep 11, 12:12 PM EST, 48 minutes earlier.
Area Forecast Discussion National Weather Service Charleston SC 112 PM EDT Sat Sep 11 2021 .SYNOPSIS... High pressure will prevail this weekend and persist through the middle of next week. && .NEAR TERM /THROUGH TONIGHT/... Today: No major changes with the early-afternoon update. High pressure centered north of the forecast area will shift eastward and off the Mid Atlantic coast by this evening. Model soundings and time heights show considerable dry air through the column, and the lack of any significant forcing will result in a rain- free forecast. Temperatures are forecast to be a degree or two below normal for early September. Low- level northeasterly flow will veer around to become easterly by the afternoon. Areas further north will see mostly clear skies through the day while locations across southeast Georgia will see more cirrus passing from southwest to northeast as an upper trough gradually lifts through the area. Tonight: High pressure will remain the primary surface feature and dry air will persist. The forecast is rain-free and the main issue will be the low temperature forecast. We currently feature low 60s inland ranging to the mid to upper 60s closer to the coast. && .SHORT TERM /SUNDAY THROUGH TUESDAY/... High pressure at the surface and aloft will prevail through Tuesday. Although, there are hints of a weak trough that could situated itself over the region each day and a slight increase in moisture is possible. There could be a few showers/thunderstorms each afternoon/evening, mainly across far SE GA and the Georgia coastal waters. With plentiful dry air aloft, any showers that do develop should be short-lived and have maintained less than 25% POPs in the forecast. Most areas should remain rain-free and mostly sunny. High temperatures will warm slightly each day due to rising heights. The overall high temps will be in the mid 80s to low 90s with low 80s along the immediate coast. Low temps will be in the mid 60s to mid 70s. && .LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/... High pressure and dry air will shift away from the region as a mid-level trough and associated cold front approaches from the west. For Wednesday, increased moisture and sufficient isentropic lift will support the return of scattered showers/thunderstorms, mainly in the afternoon/evening. Then by late week, the models are pretty inconsistent with the overall weather pattern. Although, decent moisture will stick around leading to a somewhat wet end of the week. High temperatures will be in the 80s to low 90s. Lows will be in the upper 60s to 70s. && .AVIATION /17Z SATURDAY THROUGH WEDNESDAY/... VFR conditions expected at all terminals through 18Z Sunday. Extended Aviation Outlook: VFR. && .MARINE... Today and tonight: High pressure will be centered north of the area through the period. Northeast winds this morning will veer around to become more easterly in the afternoon and through much of the overnight. Wind speeds will generally top out around 10 knots, but could tip into the 10-15 knot range at times. Seas will average 2-4 feet today, gradually diminishing to 2-3 feet overnight. Extended Marine: High pressure will prevail through mid-week before retreating east as a mid-level trough approaches from the west. Easterly to southeasterly winds at 5 to 10 knots will prevail through the period. Seas will be 2 to 4 feet. Rip Currents: Long period swells from Hurricane Larry will keep an elevated risk of rip currents through the weekend. The High Rip Current Risk has been cancelled for the Georgia beaches and a Moderate Risk is in place for both the South Carolina and Georgia beaches through this evening. For Sunday, a Moderate Risk is in place for all beaches. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && NEAR TERM...BRM SHORT TERM... LONG TERM... AVIATION...BRM MARINE...BRM
Hazardous Weather Outlook National Weather Service Charleston SC 104 PM EDT Sat Sep 11 2021 SCZ049-050-121715- Coastal Colleton-Charleston- 104 PM EDT Sat Sep 11 2021 ...MODERATE RISK FOR RIP CURRENTS IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for southeast South Carolina. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Moderate Risk for Rip Currents. Rip Currents: An elevated risk of rip currents is expected for Sunday. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time. GAZ117-119-139-141-SCZ048-051-121715- Coastal Bryan-Coastal Chatham-Coastal Liberty-Coastal McIntosh- Beaufort-Coastal Jasper- 104 PM EDT Sat Sep 11 2021 ...MODERATE RISK FOR RIP CURRENTS IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for southeast Georgia and southeast South Carolina. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Moderate Risk for Rip Currents. Rip Currents: An elevated risk of rip currents is expected for Sunday. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time. AMZ330-350-352-354-374-GAZ087-088-099>101-114>116-118-137-138-140- SCZ040-042>045-047-052-121715- 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-Inland Chatham-Long-Inland Liberty-Inland McIntosh- Allendale-Hampton-Inland Colleton-Dorchester-Inland Berkeley- Inland Jasper-Tidal Berkeley- 104 PM EDT Sat Sep 11 2021 This Hazardous Weather Outlook is for Atlantic coastal waters, southeast Georgia and southeast South Carolina. .DAY ONE...This afternoon and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1228 PM EDT SAT SEP 11 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1227 PM RIP CURRENTS TYBEE ISLAND 32.00N 80.85W
09/11/2021 CHATHAM GA LIFEGUARD
2 WEAK RIP CURRENTS ON NORTH END OF ISLAND NEAR JETTIES
&&
EVENT NUMBER CHS2100636
RJB1 rip current. Local standard time, as filed.
The Folly Beach lifeguards reported a rip current near the inlet on the north end of the beach. Two rescues were performed due to the rip current.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2021Every state in 2021This day in weather historyWarnings in South Carolina, September 2021
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: 981285.