A frontal boundary settled southward across SE GA and over NE FL into the afternoon. This boundary interacted with the east coast sea breeze over a moist and unstable airmass to produce isolated strong to pulse severe storms.
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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 JAX wrote it up.
A frontal boundary settled southward across SE GA and over NE FL into the afternoon. This boundary interacted with the east coast sea breeze over a moist and unstable airmass to produce isolated strong to pulse severe storms.
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 9, 12:03 PM EST, 1 hour 30 minutes earlier.
Area Forecast Discussion National Weather Service Jacksonville FL 103 PM EDT Fri Jun 9 2023 ...New AVIATION... .UPDATE... Issued at 858 AM EDT Fri Jun 9 2023 Forecast remains on track as stalled frontal boundary across south GA will continue to slowly drift into NE FL this afternoon and will interact with the East Coast sea breeze front as it moves slowly inland and still expect numerous showers and storms to break out this afternoon with the best coverage along the I-95 corridor and west along the I-10 corridor and FL/GA border close to the actual frontal boundary. Storm motion towards the East at 15-25 mph and expect isolated severe storms to develop wind large hail and damaging winds possible. Max temps still able to reach the lower 90s south of the frontal boundary across NE FL and mainly middle to upper 80s north of the boundary across SE GA. A lack of recent widespread rainfall should lessen any flood threat but localized/urban flooding still possible this afternoon/evening with storm mergers along the East Coast sea breeze & I-95 corridor. Convection will start to fade/lessen in coverage around sunset but still expect activity to linger until around midnight before any isolated activity lingers over the Atlantic Coastal waters during the overnight hours. Some patchy fog is possible over inland areas late tonight with lows in the upper 60s, while lower/middle 70s expected along the coast in the onshore flow. && .NEAR TERM... Issued at 300 AM EDT Fri Jun 9 2023 A weak cool front draped across southeast GA this morning will slowly drift south as a broad mid level trough pushes through the area. Stronger forcing with embedded shortwaves will be north of the area today. But, as the front slowly moves south, ample moisture with PWATs of 1.5 to 1.8 inches are forecast, resulting in diurnal instability values of about 2500 J/kg CAPE. The front and inland progression of both sea breezes will help support scattered to numerous showers and storms forming in the aftn. The lower rain chances should be behind the front over inland southeast GA, generally north/northwest of Waycross. Main threats will be frequent lightning, and potential for a damaging wind gusts given the DCAPE values close to 1000 J/kg. Some threat for marginally severe hail, but temps at 500 mb are close to average and shear aloft is not impressive. SPC has placed parts of southeast GA and all of northeast FL in a marginal risk (Level 1 out of 5) of severe storms today. Highs today will be from the upper 80s to lower 90s, with a few locations in northeast FL having heat indices of about 100. Tonight, scattered convection expected in the evening hours, with the higher coverage of convection likely to be over northeast FL where the best low level forcing is anticipated but at least some isolated convection in southeast GA this evening. Convective chances will diminish after midnight as boundary layer cools and airmass will get worked-over from afternoon storms. Lows tonight in the mid 60s to lower 70s. && .SHORT TERM... (Saturday through Sunday night) Issued at 300 AM EDT Fri Jun 9 2023 High pressure will be northeast of the region Saturday, as a warm front lifts toward the region from the southwest. The combination of sea breeze interactions, diurnal heating and frontal convergence will result in scattered thunderstorms. The warm front will remain over the region through Saturday night, so a few showers and storms will persist into the overnight, but coverage will decrease significantly after loss of diurnal heating. The high will move slowly toward the northeast on Sunday, as the warm front lifts northeast across area. Numerous showers and storms will focus on the convergence zone along the front, with help from diurnal heating. Once again, with loss of diurnal heating, convection will trail off during the overnight Sunday night. The warm front will lift northeast of the area Monday, as the parent low moves further northeast. The associated cold front will move southeast into southeast GA in the afternoon. With focus ahead of the cold front, the greatest chance for convection will be inland. The flow on Saturday will be largely onshore, so temperatures will range from the mid 80s along the coast to the lower 90s well inland. Lows Saturday night will range from the upper 60s inland to lower 70s coast. On Sunday, the flow will become generally from the south allowing inland temperatures to warm into the lower 90s. Closer to the coast, the sea breeze will hold highs down in the middle 80s. Sunday night lows will range from around 70 inland, to the lower to mid 70s coast. && .LONG TERM... (Monday through Thursday) Issued at 300 AM EDT Fri Jun 9 2023 For Monday, with the area in the warm sector of the frontal system, a prevailing southwest flow is expected. This flow will help to push the warmer temperatures all the way to the coast. Highs in the 90 to 95 degree range are expected across the forecast area. The cold front will stall across southern GA Monday night through Tuesday. The boundary will lift back to the north Tuesday night into Wednesday, as high pressure builds from the south. The high will sink back to the south on Thursday, allowing the frontal zone to sink to near the GA/FL line. Mainly diurnally driven storms are expected each day this period. Temperatures will trend above normal this period. && .AVIATION... (18Z TAFS) Issued at 1253 PM EDT Fri Jun 9 2023 Convection has begun to trigger along the sea breeze and on old outflow boundary across inland NE FL and TEMPO groups for MVFR conds in gusty TSRA will continue through the afternoon at all NE FL TAF sites, while an earlier end to TSRAs is expected by 20Z or so at SSI. Will likely need to update for potential IFR VSBYS for TAF sites that TSRAs directly impact, otherwise at least VCTS will continue into the early evening hours (01-03Z) before convection diminishes and have left in VCSH at NE FL TAF sites until some light fog formation develops in the 08-09Z time frame at inland TAF sites of JAX/VQQ/GNV. Expect mainly Easterly flow at 6-10 knots after 15Z on Saturday with SCT clouds in the 2000-3500 ft range during the morning hours, some low probs of MVFR CIGS possible after sunrise in morning diurnal heating but will leave as SCT for now. && .MARINE... Issued at 300 AM EDT Fri Jun 9 2023 Little change in the ongoing marine forecast. Winds will be westerly to start off today, then transition back from the east as a weak front moves into the area and the sea breeze develops. Scattered to numerous storms may pose a risk for boaters this afternoon and evening with gusty winds and lightning the main threats. Generally anticipate onshore flow Saturday and Sunday as the front remains stalled over parts of northeast FL. The front will push north as a warm front by early next week, with the next cold front then approaching from the northwest on Tuesday but does not push very far south and moves north of the area by Wednesday. Seas look to stay under 4 ft through the weekend, with a small east swell at 14-15 second periods. Rip Currents: Looks like low risk for today given the surf heights of less than 2 ft, with wind waves from the southeast and weak swells of less than 1 foot from the east. Risk will be higher near any sandbars and pier structures. The risk may be slightly higher Saturday through Sunday as weak winds turn prevailing from the northeast and east. && .PRELIMINARY POINT TEMPS/POPS... AMG 89 65 91 68 / 30 20 30 20 SSI 84 72 83 72 / 50 20 20 20 JAX 90 69 87 70 / 80 40 40 10 SGJ 89 70 85 71 / 80 70 50 20 GNV 92 68 90 68 / 80 50 70 20 OCF 92 69 91 69 / 50 30 70 20 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...None. GA...None. AM...None. &&
Special Weather Statement
National Weather Service Jacksonville FL
133 PM EDT Fri Jun 9 2023
FLZ035-136-236-091800-
Eastern Alachua FL-Western Alachua FL-Gilchrist FL-
133 PM EDT Fri Jun 9 2023
...A strong thunderstorm will impact portions of southern Gilchrist
and southwestern Alachua Counties through 200 PM EDT...
At 133 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles northwest of Archer, or 10 miles east of Trenton, moving east
at 15 mph.
HAZARD...Winds around 40 mph, pea size hail, and minor flooding due
to heavy rainfall.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible. Minor flooding due to heavy rainfall is possible.
Locations impacted include...
Gainesville, Trenton, Archer, University Of Florida, Newberry,
Micanopy and McIntosh.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 2964 8296 2970 8296 2970 8294 2972 8296
2972 8294 2974 8294 2977 8255 2964 8223
2946 8220 2945 8222 2949 8222 2948 8255
2954 8256 2953 8265 2956 8266 2956 8275
2958 8278 2959 8286 2958 8295 2962 8297
TIME...MOT...LOC 1733Z 291DEG 12KT 2960 8264
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
HESSSpecial Weather Statement
National Weather Service Jacksonville FL
154 PM EDT Fri Jun 9 2023
FLZ136-236-091830-
Eastern Alachua FL-Western Alachua FL-
154 PM EDT Fri Jun 9 2023
...A strong thunderstorm will impact portions of Alachua County
through 230 PM EDT...
At 154 PM EDT, Doppler radar was tracking a strong thunderstorm near
University Of Florida, or near Gainesville, moving east at 15 mph.
HAZARD...Wind gusts up to 50 mph, half inch hail, excessive
cloud-to-ground lightning, and minor flooding due to heavy
rainfall.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible. Minor flooding due to heavy rainfall is possible.
Excessive cloud-to-ground lightning is occurring.
Locations impacted include...
Gainesville, Hawthorne, Archer, University Of Florida, Rochelle,
Cross Creek, Orange Heights, Gainesville Airport, Newnans Lake and
Newberry.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 2945 8221 2946 8221 2946 8219 2947 8221
2949 8222 2948 8256 2954 8256 2954 8265
2960 8266 2976 8256 2974 8205 2944 8206
2943 8207
TIME...MOT...LOC 1754Z 281DEG 14KT 2962 8242
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
HESSSpecial Weather Statement
National Weather Service Jacksonville FL
217 PM EDT Fri Jun 9 2023
FLZ237-091830-
Western Putnam FL-
217 PM EDT Fri Jun 9 2023
...Strong thunderstorms will impact portions of southwestern Putnam
County through 230 PM EDT...
At 217 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Interlachen to near Hawthorne. Movement
was southeast at 10 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Interlachen, Melrose Landing, Hollister, Johnson and Mannville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 2949 8178 2949 8184 2952 8185 2951 8189
2951 8190 2950 8191 2951 8194 2950 8202
2947 8205 2964 8206 2969 8191 2958 8172
2954 8176 2948 8174 2943 8174 2943 8177
TIME...MOT...LOC 1817Z 308DEG 11KT 2958 8190 2955 8205
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
SANDRIKThe Jacksonville radar (KJAX), 109 km away, was scanning. The volume nearest the first event began at 18:32 UTC.
2 thunderstorm wind, 1 hail, 1 heavy rain. Local standard time, as filed.
A tree was blown down along South County Road 315. The time of the event was based on radar. The cost of damage was unknown, but it was estimated for inclusion in Storm Data.
A power line was blown down along A1A between South 16th and 18th Streets. The cost of damage was unknown, but it was estimated for inclusion in Storm Data.
Nickel size hail was observed along Kevin Drive in Orange Park.
A public network mesonet station measured 3.17 inches of daily rainfall.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2023Every state in 2023This day in weather historyWarnings in Florida, June 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: 1099129, 1099131, 1099055, 1099128.