An outflow boundary associated with previous convection along the western periphery of Atlantic high pressure led to strong and severe thunderstorms developing across southeast Georgia during early evening hours.
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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.
An outflow boundary associated with previous convection along the western periphery of Atlantic high pressure led to strong and severe thunderstorms developing across southeast Georgia during early evening hours.
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 8, 6:37 PM EST, 15 minutes earlier.
Area Forecast Discussion National Weather Service Charleston SC 737 PM EDT Tue Jun 8 2021 .SYNOPSIS... Atlantic high pressure will prevail through Friday. A weak cold front will move across the region this weekend before dissipating early next week. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/... Meso-analysis this evening shows the best overlap of a moisture axis, moisture convergence and the strongest upward omega fields across locations near the US-301 corridor. Based on radar trends we have bumped up PoPs to 50-70% from Screven and Jenkins south to tattnall County through mid evening. CINH will steadily increase during the late evening and overnight, allowing for this convection to diminish in both intensity and coverage. Further east and southeast, CINH is already starting, so generally no more than 20-30% chances elsewhere. The main concern appears to be heavy rainfall resulting in minor flooding in spots given the elevated PWat and a deep, warm cloud layer. Plus, some of these places have seen heavy rains the past few days. Expect rainfall rates of as much as 2 or 3 inches an hour in a few spots across interior Georgia. Although we did adjust the hourly temp curve to account for where the better coverage of convection occurs, we did not alter the warm min temps as we previously had. Previous discussion... This Evening and Tonight: Aloft, ridging will remain centered over the Southeast while an upper low slowly nudges north and weakens across the Midwest. At the sfc, the area will remain along the western edge of high pressure extending from the Atlantic. The pattern will favor at least scattered showers and thunderstorms away from the coast into early evening. The potential for numerous showers and thunderstorms remains well inland, where recent radar imagery depicts an outflow boundary from ongoing convection nudging into western most zones. Although latest water vapor imagery depicts some drier air filtering into the region from the west, SBCAPE around 3000 J/kg, PWATs around 2.0 inches along with sfc dewpts in the low-mid 70s and fairly weak steering flow suggest showers and thunderstorms capable of producing localized heavy rainfall and/or flooding, especially if convection becomes enhanced with outflow/boundary interactions near locations that have seen several inches of rainfall during the past few days. A stronger thunderstorm or two can't be ruled out as well before sunset, but the overall threat is low. Overnight, expect overall precip coverage to gradually decrease and remain inland within an hour or two after sunset. The loss of daytime heating should also reduce most thunderstorms to mainly showers under a ridge centered across the Southeast. However, a few showers and/or isolated thunderstorm can not be ruled out during the overnight period, mainly well inland early tonight, then perhaps closer to the South Carolina coast near daybreak. Lows are expected to range in the low-mid 70s inland to mid-upper 70s near the coast. && .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/... An upper ridge will gradually build across the southeast United States Wednesday through Friday. Deep moisture is expected to persist through Wednesday with PWs in excess of 2". Values should drop to around 1.6" Thursday and Friday. With Atlantic high pressure remaining at the surface, prevailing onshore flow will allow for a robust sea breeze each day, which could provide a focus for diurnal convection. Additionally, a surface lee trough will remain over the SC Midlands through the period, helping to focus inland convection. Given the gradual drying in low and mid levels late week, we expect decent shower and tstm coverage on Wednesday, especially inland, with less coverage Thursday and Friday. High temps will increase a few degrees each day with low 90s by Friday. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... A mid level trough will shift to the East Coast over the weekend, helping to send a weak cold front across the region. Timing of the front is still a bit uncertain, but consensus has it dropping south through the local area later Saturday into Saturday night. At least scattered showers and thunderstorms are expected with better forcing for ascent and PWats in excess of 2 inches. The front could stall to our south before likely dissipating early next week. Given the uncertainties, rain chances are maintained in the forecast. Temperatures through the period are expected to be within a few degrees of normal. && .AVIATION /00Z WEDNESDAY THROUGH SUNDAY/... Latest indications are that convection across interior southeast Georgia will not reach the KSAV terminal. However, we will amend if necessary. The risk for convection at KCHS and KJZI has ended. There is a low end chance of MVFR ceilings at any of the sites overnight into Wednesday morning, but not enough of a probability to include at this time. Showers and thunderstorms will be in the area Wednesday afternoon. But confidence in timing and impact is too low to include with the 00Z TAFs. Extended Aviation Outlook: Brief flight restrictions possible in showers and tstms, mainly during the daytime hours. && .MARINE... This Evening and Tonight: SE to S flow will prevail along the western edge of Atlantic high pressure. In general, wind speeds of 10-15 kt will occur prior to midnight, before dropping a few knots overnight. Seas will average between 2-3 ft, highest across offshore Georgia waters. Persistent southerly flow expected Wednesday through Saturday. Wind speeds should increase a bit on Friday as a front approaches and the gradient tightens. Given the prevailing onshore flow and warm inland temps, a robust afternoon sea breeze is expected. Frequent 25 kt gusts in Charleston Harbor could require a Small Craft Advisory. The front is expected to move across the area over the weekend, with winds turning NE on Sunday. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && NEAR TERM... SHORT TERM...JRL LONG TERM...JRL AVIATION... MARINE...
Hazardous Weather Outlook National Weather Service Charleston SC 300 PM EDT Tue Jun 8 2021 GAZ087-088-SCZ040-042>045-091900- Jenkins-Screven-Allendale-Hampton-Inland Colleton-Dorchester- Inland Berkeley- 300 PM EDT Tue Jun 8 2021 This Hazardous Weather Outlook is for 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. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time. AMZ330-350-352-354-374-GAZ099>101-114>119-137>141-SCZ047>052-091900- 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- Candler-Bulloch-Effingham-Tattnall-Evans-Inland Bryan-Coastal Bryan- Inland Chatham-Coastal Chatham-Long-Inland Liberty-Coastal Liberty- Inland McIntosh-Coastal McIntosh-Inland Jasper-Beaufort- Coastal Colleton-Charleston-Coastal Jasper-Tidal Berkeley- 300 PM EDT Tue Jun 8 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...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
The Charleston,SC radar (KCLX), 116 km away, was scanning. The volume nearest the first event began at 23:52 UTC.
2 thunderstorm wind. Local standard time, as filed.
A trained spotter reported several trees down across Highway 169 near the intersection of Highway 57.
A trained spotter reported a tree down across Perkins Mill Road at Highway 301. A utility pole was also reported down on Campground Road near the Bay Branch Primitive Baptist Church.
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, June 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: 965512, 965513.