Lingering astronomical effects from the recent new moon and onshore flow combined to help produce rip currents along the southeast Georgia 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.
Lingering astronomical effects from the recent new moon and onshore flow combined to help produce rip currents along the southeast Georgia 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 Jul 11, 2:27 PM EST, 1 hour 3 minutes earlier.
Area Forecast Discussion National Weather Service Charleston SC 327 PM EDT Sun Jul 11 2021 .SYNOPSIS... Atlantic high pressure will extend across the area through this weekend. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... Late Afternoon: Aloft, a low will be centered across the Midwest while a ridge strengthens across the western Atlantic. At the sfc, forcing mechanisms will remain limited, with a lack of a lee trough inland and a subtropical high expanding across the region. Latest trends indicate ongoing convection across interior Georgia, where stronger sfc heating has occurred and MLCAPEs range between 1500- 2000 J/kg. However, shear is weak and DCAPE is not impressive, suggesting mainly pulse type thunderstorms through late afternoon. Should convection interact with boundaries, such as an inland moving sea breeze, there remains a limited risk of a few stronger thunderstorms and/or marginally severe thunderstorm, mainly across southeast Georgia during the next few hours. Closer to the coast, high clouds associated with convection across the Gulf Stream will likely limit sfc heating and convective potential for locations along and east of the I-95 corridor through the evening. Tonight: Showers/thunderstorms should be mainly confined to locations well inland across southeast Georgia and perhaps southeast South Carolina early evening, but are expected to quickly weaken and/or dissipate within an hour or two of sunset. The remainder of the night is expected to be dry with sfc high pressure extending from the Atlantic across the area while an upper lvl low approaches the Florida coast late. Low temps should be mild, ranging in the low-mid 70s inland to upper 70s at the beaches. && .SHORT TERM /6 AM MONDAY MORNING THROUGH WEDNESDAY/... Atlantic high pressure at the surface and aloft will prevail through the period, maintaining typical July weather. The best coverage of diurnal convection will be across inland areas due to a surface trough and occasional shortwave energy. Elsewhere, a moderate to strong mid-level cap will limit convective development. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... High pressure at the surface and aloft will maintain control of the local weather late week into the weekend. Typical summertime convective pattern is expected. Scattered showers and thunderstorms are possible each day, generally driven by daytime heating and mesoscale boundaries such as the sea breeze and convective outflows. Temperatures through the period will be within a few degrees of mid July normals. && .AVIATION /19Z SUNDAY THROUGH FRIDAY/... VFR conditions should prevail at both CHS and JZI terminals this afternoon. However, brief flight restrictions are possible at the SAV terminal for afternoon showers and thunderstorms developing across southeast Georgia. Given the trends, VCTS has been introduced at SAV between 19Z-23Z. Tempo MVFR conditions could need to be included at some point this afternoon. Otherwise, southwest winds should gust around 15-20 kt at all terminals today. VFR conditions are then expected to prevail at all terminals overnight and through late Monday morning. Extended Aviation Outlook: Brief flight restrictions are possible in showers/thunderstorms, mainly during the daytime hours. && .MARINE... This Evening and Tonight: High pressure across the western Atlantic will extend across local waters through the night while an upper lvl low approaches the Florida coast late. South winds gusting up to 15- 20 kt early this evening will gradually turn more south-southwest overnight and remain no higher than 10-15 kt. Seas will average between 1-3 ft early, then build to 2-4 ft tonight. No marine concerns expected through Friday as Atlantic high pressure extends across the area. Southerly flow will generally remain in the 10-15 knot range. Seas will average 2-4 feet, highest across the outer Georgia waters. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && NEAR TERM...DPB SHORT TERM...JRL LONG TERM...ETM AVIATION...DPB/JRL MARINE...DPB/JRL
Hazardous Weather Outlook National Weather Service Charleston SC 325 AM EDT Sun Jul 11 2021 AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040- 042>045-047>052-120730- 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- 325 AM EDT Sun Jul 11 2021 This Hazardous Weather Outlook is for Atlantic coastal waters, southeast Georgia and southeast South Carolina. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
1 rip current. Local standard time, as filed.
The Tybee Island Fire Department reported several strong rip currents south of 14th Street. The rip currents were about 50 feet wide and extended about 100 feet into the surf zone. Two rip current rescues occurred.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2021Every state in 2021This day in weather historyWarnings in Georgia, July 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: 965938.