Onshore winds in combination with long period swell led to rip currents along the beaches of southeast Georgia.
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 in combination with long period swell led to rip currents along the beaches of southeast 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 Charleston, SC wrote its last area forecast discussion before the first event at Aug 27, 2:20 PM EST, 56 minutes earlier.
Area Forecast Discussion National Weather Service Charleston SC 320 PM EDT Sun Aug 27 2023 .SYNOPSIS... A cold front will stall northwest of the region into Tuesday. Tropical Storm Idalia is expected to move across the eastern Gulf of Mexico early this week, then impact the local area by mid-week bringing a number of impacts to the area. High pressure will rebuild into the area by late week and continue into the weekend. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... The airmass remains fairly capped today, so the sea breeze has thus far only triggered limited convection. There is better convergence across the SC Midlands in association with a stalled front. Isolated to scattered showers and tstms will be possible farther inland through early evening, after which the loss of daytime heating should cause activity to diminish. From mid-evening onward, we anticipate dry conditions due to a lack of appreciable forcing. && .SHORT TERM /6 AM MONDAY MORNING THROUGH WEDNESDAY NIGHT/... Monday: Rain chances continue to trend downward with the area positioned between a mid-level weakness to the west and Hurricane Franklin passing well offshore. The ridging between these two features will yield little in the way of forcing aloft with low- level forcing being confined to mesoscale boundary interactions such as outflow-sea breeze and outflow-outflow collisions. Pops were lowered to 20-30%. The best chances for showers/tstms will shift inland with the sea breeze with convection generally dying off by mid-late evening with the loss of heating. Some nocturnal convection could spark over the Atlantic after midnight, which could make a run for the beaches. Highs will range from the lower-mid 90s inland to the mid-upper 80s at the beaches. Lows early Tuesday will range from the lower-mid 70s inland to the upper 70s/lower 80s at the beaches and Downtown Charleston. Tuesday: Ridging looks to intensify across the area Tuesday as Hurricane Franklin passes off the North Carolina Outer Banks and Idalia strengthens in the eastern Gulf of Mexico. Although heights build aloft, net moisture and instability will slowly increase. The eventual coverage of showers/tstms remains uncertain given the two competing processes, but pops were once again lowered slightly from the previous forecast (lowered to 30-50%) as the NBM has been running way too wet over the past few months. Overnight, rain chances look to increase to 50-70% as a PRE (Predecessor Rain Event) signal begins to materialize in the vicinity of a stationary front and moisture levels increase further ahead of Idalia. Highs will range from the upper 80s/lower 90s, except mid 80s at the beaches. Lows early Wednesday will range from the lower-mid 70s inland with upper 70s/lower 80s at the beaches and Downtown Charleston. Wednesday: Much of Wednesday into Wednesday night will be dominated by Idalia. 27/12z guidance has shifted east a bit and a tad faster. The latest NHC forecast shows increasing probabilities for both tropical storm and hurricane conditions, but it is still too soon to talk specifics with respect to deterministic winds for the local area. Much will be determined on how Idalia responds to conditions over the eastern Gulf of Mexico and how it tracks over northern Florida. Suffice to day, confidence is increasing that some degree of impacts, possibly significant, will occur across Southeast South Carolina and Southeast Georgia. In addition to possible tropical storm and/or hurricane conditions, heavy rainfall and flooding will become an issue, especially with elevated high tides expected and a PRE potentially ongoing. This will only enhanced the risk for flash flooding, especially at the coast. There is still plenty of time to pin down the heavy rain, wind and tide forecasts, and how they will interplay. Expect a variety of hydrologic, tropical and surge/coastal flooding headlines will be needed at some point, possibly as early as Monday afternoon. && .LONG TERM /THURSDAY THROUGH SUNDAY/... Expect improving conditions Thursday with breezy conditions lingering through the morning as Idalia pulls away. Rain chances will remain fairly limited Friday through Sunday and geared more towards a standard, diurnal pattern. && .AVIATION /19Z SUNDAY THROUGH FRIDAY/... Some pesky MVFR stratocu early this afternoon has mostly lifted to VFR now. Generally VFR for the remainder of the day into the overnight. Some guidance is hinting at MVFR ceilings and/or vsby around daybreak Monday. We hinted at some reductions in the 18Z TAFs but maintained VFR for now. Rain chances are higher on Monday due to a weak surface trough. Showers or tstms could drift in off the Atlantic during the day. Extended Aviation Outlook: Flight restrictions are likely Tuesday associated with showers and thunderstorms. Confidence is increasing in the region seeing impacts from Idalia Wednesday into Thursday. Breezy to windy conditions will be possible, as well as low cigs and reduced visibilities due to tropical rains. Additionally there could be a risk of low-level wind shear depending on Idalia's track. Conditions are expected to improve significantly Friday and heading into the weekend. && .MARINE... Fairly weak SE winds expected through tonight with winds below 10 kt after the coastal sea breeze subsides. Monday through Friday: Confidence is increasing that hazardous conditions will impact the marine area by mid-week as Idalia impacts the marine area. The worst conditions will occur Wednesday into Wednesday night as the system makes it closest approach. It is still a bit too far out to pin down specific, deterministic winds, but the risks for both tropical storm and hurricane conditions are increasing. Mariners are urged to begin preparations now. Seas will steadily build through mid-week with 6 ft seas possibly reaching portions of the waters Monday night, mainly due to increasing swells from distant Hurricane Franklin. A Small Craft Advisory may be needed prior to the issuance of any possible tropical headlines. Rip Currents: Swells from Hurricane Franklin have reached the local marine area and will continue to build through Tuesday. Swells are expected to reach 2 ft/10 sec by Monday and 3 ft/10-12 sec by Tuesday. This will support a moderate rip current risk for all beaches Monday and a high risk for all beaches Tuesday. && .TIDES/COASTAL FLOODING... The combination of astronomical forces (full moon with lunar perigee on Wednesday) along with periods of onshore winds may result in coastal flooding along portions of the South Carolina and Georgia coast this week. Coastal flooding may occur during the evening high tides Monday through Thursday, then possible during both the morning and evening high tides beginning Friday. In addition, TS Idalia may bring rounds of moderate to heavy rainfall along with gusty winds, potentially Tuesday through Thursday. There is low confidence concerning the details of this system's timing, placement, and strength. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && NEAR TERM...JRL SHORT TERM...ST LONG TERM...ST AVIATION...JRL/ST MARINE...JRL/ST TIDES/COASTAL FLOODING...
Hazardous Weather Outlook National Weather Service Charleston SC 507 AM EDT Sun Aug 27 2023 GAZ087-088-099>101-114>116-118-137-138-140-SCZ040-042>045-047-052- 280915- 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- 507 AM EDT Sun Aug 27 2023 This Hazardous Weather Outlook is for southeast Georgia and southeast South Carolina. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Tropical: Tropical Depression 10 will impacts portions of the Southeast U.S. by mid-week as a tropical storm. Locally, there will be a risk for heavy rainfall, freshwater flooding, coastal inundation and rip currents. In addition, tropical storm force winds and an isolated tornado could also occur. A variety of watches, warnings and advisories may be needed next week. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time. GAZ117-119-139-141-SCZ048>051-280915- Coastal Bryan-Coastal Chatham-Coastal Liberty-Coastal McIntosh- Beaufort-Coastal Colleton-Charleston-Coastal Jasper- 507 AM EDT Sun Aug 27 2023 ...MODERATE RISK FOR RIP CURRENTS IN EFFECT THROUGH THIS EVENING... This Hazardous Weather Outlook is for southeast Georgia and southeast South Carolina. .DAY ONE...Today 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. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Tropical: Tropical Depression 10 will impacts portions of the Southeast U.S. by mid-week as a tropical storm. Locally, there will be a risk for heavy rainfall, freshwater flooding, coastal inundation and rip currents. In addition, tropical storm force winds and an isolated tornado could also occur. A variety of watches, warnings and advisories may be needed next week. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time. AMZ330-350-352-354-374-280915- 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- 507 AM EDT Sun Aug 27 2023 This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Tropical: Tropical Depression 10 will impacts portions of the Southeast U.S. by mid-week as a tropical storm. Locally, heavy rainfall reducing visibilities to 1 NM or less, tropical storm force winds and isolated waterspouts could occur. Tropical Storm Watches and Warnings may eventually be needed for portions of the local marine area. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
1 rip current. Local standard time, as filed.
A lifeguard reported 4 strong rip currents about 25 yards long near the Tybee Pier,|resulting in 3 rescues between 316 PM to 350 PM.
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, August 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: 1134474.