A moderate rip current risk was in effect both dates due to weak easterly swell and prior days of SE winds.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 JAX wrote it up.
A moderate rip current risk was in effect both dates due to weak easterly swell and prior days of SE winds.
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 Jacksonville, FL wrote its last area forecast discussion before the first event at Jun 10, 12:23 PM EST, 22 minutes earlier.
Area Forecast Discussion National Weather Service Jacksonville FL 123 PM EDT Thu Jun 10 2021 .AVIATION... [Through 18Z Friday] Looking at visible satellite imagery an extensive area of cumulus cloud streets have developed oriented with the synoptic southwesterly flow. The Gulf sea breeze is evident near and along U.S. 19. The cloud streets reach right to the Atlantic coast beaches so no evidence of an Atlantic sea breeze front developing as of yet. Convection looks to be a few hours behind the previous discussion's timing with the convection southwest of Gainesville. Still expecting development along the Atlantic seaboard close to Interstate 95 between 10/20 utc to about 11/02 utc. a few storms may be strong with downbursts/gust fronts in to 40 knot range. && .PREV DISCUSSION [1017 AM EDT]... .NEAR TERM [Through Tonight]... No significant changes to the previous discussion with respect to both public and marine forecasts. A southwest synoptic flow will trap the Atlantic sea breeze front along the east coast between I-95 and U.S. 301. This will be the primary focusing mechanism for later afternoon and evening convection. Prior to that the normally favored area for convective development southwest of Gainesville will become active late this morning with cells moving northeast toward the gainesville area during the early afternoon. .SHORT TERM [Friday Through Saturday Night]... A mean westerly flow is expected through the column on Friday as lower ridging shifts south of the region and a shortwave trough axis slides into the Deep South. Prevailing southwesterly flow in the lower and mid levels will bring a drier airmass from the Gulf over the region while pinning the Atlantic sea breeze to the coast. Dry entrainment will limit convection across most of the area. Though chances are fairly low (<30%), isolated showers and thunderstorms are possible along and east of the I-95 corridor as the Gulf seabreeze collides with the pinned Atlantic seabreeze during the early evening hours Friday. That said, best chances for storms will be favored further north and west across inland SE GA and the Suwannee Valley as upper trough axis pivots overhead Friday night. A wave of low pressure is progged to spin up along a prefrontal trough resulting in enhanced convergence and thunderstorm chances across SE GA on Saturday in addition to considerable cloud cover overspreading the entire area. The latest suite of guidance does have a slightly faster progression of the upstream surface front, now bringing it into the Altamaha late Saturday night and all the way to the FL/GA border by sunrise Sunday. Numerous showers and embedded storms will be possible amid the convergent flow within the frontal zone during the overnight hours Saturday. Precip coverage will shift from north to south with frontal motion through predawn hours Sunday. Hottest temps of the forecast are expected on Friday as the drier air and breezy southwest to westerly flow enhance mixing. The sea breeze will be largely confined to the coast on Friday resulting in lower to mid 90s areawide (including at the beach). Cloudy skies and scattered showers will keep highs in the mid to upper 80s across inland SE GA and the Suwannee Valley on Saturday. Elsewhere, highs will likely reach the lower 90s again. .LONG TERM [Sunday Through Thursday]... Unsettled weather will continue on Sunday and through early next week as successive disturbances & fronts press toward and eventually into the area. A longwave pattern will setup over the CONUS through next week; a baggy trough will be draped across the eastern US while an amplifying ridge is expected over the spine of Rockies. The northwesterly flow between the trough and ridge will leave our door open to at least a few shortwave troughs with attendant surface fronts through the extended period. At this time, two fronts will come near or sink into the region. The first will be on Monday and the second on Thursday. Numerous to widespread thunderstorms are possible with the frontal influence (though PoPs do not reflect this at the moment). Aside from the fronts, moisture will become entrenched over the region again next week with PWATs at or above 2.0". This will lead to diurnal instability and afternoon storm chances in between frontal/shortwave influence. High temps through this period will be heavily influence by cloud cover and convection. This is reflected by the considerable spread in ensemble high temperatures. That said, the current forecast has kept temperatures near climo through next week. .MARINE... Ridge of high pressure will be south of the area through the period with prevailing flow from the south and southwest, except for the afternoon sea breeze today and Friday. By Saturday and Sunday, stronger offshore flow will keep the sea breeze offshore, and a weak front and trough will move into the southeast U.S. while a more stormy weather pattern develops, with more offshore moving storms possible. Short term concerns are stronger southerly winds tonight and the possibility of a few storms along the area beaches this afternoon and early evening. Seas are generally 2-4 ft today and will increase slightly tonight due to the stronger south wind. Rip Currents: Moderate risk of rip currents today due to a weak easterly swell and prior days of southeast winds over the area beaches. Low end moderate risk looks possible on Friday. .FIRE WEATHER... Strengthening westerly flow ahead of an approaching front will lead to high dispersion across inland SE GA today and widespread high dispersion on Friday. Scattered afternoon and evening thunderstorms are possible at inland locations, mainly between I-75 and I-95 this afternoon and evening. Gusty, erratic outflow will be possible with strong storms. Breezy southwesterly winds are expected ahead of an approaching front on Friday, with gusts up to 25 MPH. Despite breezy winds, humid conditions will remain in place. && .PRELIMINARY POINT TEMPS/POPS... AMG 70 92 71 87 70 / 20 30 30 60 50 SSI 76 93 76 88 74 / 20 20 20 60 60 JAX 72 95 73 90 71 / 30 10 30 60 50 SGJ 73 93 73 90 73 / 20 20 20 40 40 GNV 69 93 70 89 70 / 10 10 40 50 40 OCF 72 93 72 90 73 / 10 10 20 30 40 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...None. GA...None. AM...None. &&
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1154 AM EDT THU JUN 10 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0519 PM HAIL 5 ENE OLUSTEE 30.24N 82.36W
06/09/2021 E0.25 INCH BAKER FL EMERGENCY MNGR
RADAR ESTIMATED TIME.
&&
DDThe national radar mosaic for the moment the first event began.
2 rip current. Local standard time, as filed.
Flagler Beach Ocean Rescue reported a rip current rescue at South 4th Street in Flagler Beach. Two swimmers were caught in a rip current and rescued near the Flagler Beach Pier. No injuries were reported.
Flagler Beach Ocean Rescue rescued two people from a rip current at 3rd Street in Flagler Beach. There was not additional information.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2021Every state in 2021This day in weather historyWarnings in Florida, 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: 959770, 959771.