Lifeguards reported 3 to 4 foot breakers in the surf zone and conditions supportive of rip currents along the Chatham County 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.
Lifeguards reported 3 to 4 foot breakers in the surf zone and conditions supportive of rip currents along the Chatham County 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 13, 9:34 AM EST, 1 hour 26 minutes earlier.
Area Forecast Discussion National Weather Service Charleston SC 1034 AM EDT Mon Jul 13 2020 .SYNOPSIS... An area of low pressure will remain across the area today. A weak cold front is then expected to shift across the region on Tuesday. High pressure will build over the region on Wednesday and persist into early next week. && .NEAR TERM /THROUGH TONIGHT/... As of 1030 AM: Latest visible satellite indicated sunny conditions across the inland counties, thin debris clouds remained near the coast. The debris clouds should slide over the Atlantic before noon. Few to scattered Cu is expected to develop over land during the mid-day. I will update the forecast to adjust sky coverage and timing. 12Z CHS sounding observed a thick later of CIN with convective temperature around 91. Based on the sounding, I will delay the development of isolated to scattered showers and thunderstorms until 18Z and later. Previous Discussion: An upper level trough over the area this morning will shift east today. A weak disturbance moving into the trough will bring a period of slightly cooler temperatures in the mid levels of the atmosphere this afternoon. Even though surface dewpoints will mix out some today, they won't mix out as much as yesterday and this combined with very warm temperatures and the bit of cooling aloft will all act to increase instability some, with afternoon CAPE values expected from 1500 J/KG across far inland GA up to 2000 to 2500 J/KG across portions of southeast South Carolina. Appears the cooling aloft will also weaken the cap a bit this afternoon, especially across the Charleston Tri- County area before it increases again by this evening. But will that be enough for convection to develop given only modest convergence along the sea breeze and only subtle lift from the upper level disturbance. Model blends and most mesoscale models are fairly bullish on precipitation chances this afternoon despite only subtle changes to the atmospheric conditions that had a hard time producing any showers yesterday. The 00Z GFS and 00Z ECMWF models imply and numerical guidance from the GFS, ECMWF, and NAM indicate very low POPS, mainly at or below 20 percent. So in order to maintain some consistency with previous forecast and neighboring offices, only lowered rain chances to lower end of chance category, with the highest along the sea breeze during the mid to late afternoon hours in southeast South Carolina. Gut feeling is that these POPs may still be a bit too high. Given instability, cannot rule out a thunderstorm capable of producing strong to marginally severe winds gusts. The slight mixing out of dewpoints will once again keep heat indices in check with peak values expected to be between 100 and 105. Interesting that despite an upper level trough over the area, high temperatures will still be above normal, with highs ranging from near 90 at the coast to mainly mid 90s elsewhere. Any lingering showers and thunderstorms should quickly weaken/dissipate this evening with the loss of heating. The majority of the night will be rain free. Warm lows will mainly be in the mid to upper 70s. && .SHORT TERM /TUESDAY THROUGH THURSDAY/... Tuesday: The center of a mid/upper lvl trough of low pressure will shift off the Northeast coast, helping nudge a southward extending cold front into the area. Lingering moisture near the weakening front could lead to few/scattered showers and thunderstorms during peak heating hours. Temps will be warm, peaking in the low/mid 90s for most areas (warmest across inland Georgia). Any convection that develops during the day will likely dissipate quickly during the evening, favoring dry conditions through the night. Temps will remain mild overnight, only dipping into the mid/upper 70s. Wednesday and Thursday: A mid/upper lvl ridge of high pressure will extend across much of the Deep South and Southeast United States, favoring more of a typical summertime pattern as a weak front dissipates across/near the area Wednesday, before high pressure develops across the western Atlantic and a weak lee trough begins to develop inland Thursday. Few to scattered showers and thunderstorms are possible during peak heating hours each day, but should quickly diminish each evening with the loss of daytime heating. Temps will remain warm, peaking in the low/mid 90s across most areas each afternoon. A few locations could peak in the upper 90s well inland. Overnight lows should be mild, ranging in the mid/upper 70s away from the immediate coast. && .LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/... A mid/upper level ridge of high pressure will extend across the Southeast through much of the week with the bulk of shortwave energy passing north of the area with a series of longwave troughs. A more typical summertime pattern is anticipated with few to scattered showers/thunderstorms possible each afternoon/evening through Friday. Precip coverage should slightly increase late weekend as weak h5 shortwave energy enters the area while onshore sfc flow persists between high pressure extending across the western Atlantic and lee trough inland. High temps will be a few degrees above normal through the week, generally ranging in low/mid 90s each day (warmest inland), but could be a degree or two cooler late week and into early next week as onshore sfc flow remains in place and precip coverage increases. Overnight lows should remain mild, ranging in the mid/upper 70s away from the immediate coast. && .AVIATION /15Z MONDAY THROUGH FRIDAY/... VFR expected through 12Z Tuesday. There could be a few showers/thunderstorms near or perhaps at the terminals as early as 19-20Z, but certainly not enough of a chance or confidence to include in either the KCHS or KSAV TAF at this point in time. Extended Aviation Outlook: VFR conditions will generally prevail at both terminals through late week, but brief flight restrictions are possible during afternoon/evening showers or thunderstorms each day. && .MARINE... No changes on the early morning update. Atlantic high pressure will result in south to southwest winds today and tonight. Winds will mainly be from 10 to 15 today and the first half of tonight before weakening. Seas will trend slightly higher today before trending lower tonight. Winds and seas will remain well below small craft advisory thresholds through tonight. Tuesday through Saturday: A weak cold front could shift offshore Tuesday, but will likely be weakening and/or dissipating through Wednesday. High pressure will then generally prevail into the weekend. Given the weak pressure gradient pattern, winds/seas are expected to remain well below Small Craft Advisory levels through the week. In general, south-southeast winds will gust no higher than 10-15 kt, but could temporarily shift to the south-southwest during any weak fropa Tuesday. Seas will be no higher than 2-3 ft. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && NEAR TERM...NED SHORT TERM...DPB LONG TERM...DPB AVIATION...DPB/MTE MARINE...DPB/MTE
Hazardous Weather Outlook National Weather Service Charleston SC 331 AM EDT Mon Jul 13 2020 AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040- 042>045-047>052-140745- 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- 331 AM EDT Mon Jul 13 2020 This Hazardous Weather Outlook is for Atlantic coastal waters, southeast Georgia and southeast South Carolina. .DAY ONE...Today and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
1 rip current. Local standard time, as filed.
Lifeguards on Tybee Island reported several strong rip currents from around 7th Street to 18th Street. The rip currents started just before noon and 4 rescues were conducted.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2020Every state in 2020This day in weather historyWarnings in Georgia, July 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: 913874.