A gust front from a distant sea breeze triggered thunderstorm produced wind damage in Baker County.
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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 gust front from a distant sea breeze triggered thunderstorm produced wind damage in Baker County.
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 Sep 9, 3:13 PM EST, 47 minutes earlier.
Area Forecast Discussion
National Weather Service Jacksonville FL
413 PM EDT Sun Sep 9 2018
.NEAR TERM (Tonight and Tomorrow)...
The NHC has classified Florence as a hurricane earlier today, and
it is currently located approximately 650 nautical miles SE of
Bermuda and moving W at about 5 knots. Scattered storms have begun
to develop throughout the forecast area and are expected to
disperse later this evening. The flow tomorrow will continue to
be lightly moving out of the southwest bringing in precipitable
water levels of over 2 inches. The overall weak pressure system
will allow the seabreezes to press inland, which will lead to
thunderstorm and shower developments later in the afternoon.
Overnight low temperatures are expected to be in the mid to low
70s. Tomorrows maximum high temperature will be in the low 90s in
inland areas and in the low 80s near the coast.
.SHORT TERM (Tuesday and Wednesday)...
Numerous to scattered thunderstorms and showers can be expected to
develop during this period as that the prevailing flow will
continue to be weak which will allow the seabreezes to press
inland and help to develop storms in the afternoon. Storms and
showers will be slow-moving, which could result in areas of
localized flooding with stronger storms.
Maximum high temperatures during this period are expected to be in
the low 90s and overnight low temperatures are forecasted to be in
the low to mid 70s.
.LONG TERM (Thursday thru Saturday...
Conditions later in the week will depend heavily on what path
Hurricane Florence eventually winds up taking. Current
predictions from the NHC have Florence steering towards the
Carolinas, however there is still some potential for variability
in probable path's cone. Thursday looks to be fairly active with
rainfall and convection. Current models show our region's flow
pattern coming from out of the north on Friday, bringing with it
lower precipitable water values towards the end of the week.
Maximum high temperatures during this period are expected to be in
the low 90s and overnight low temperatures are forecasted to be in
the low to mid 70s.
&&
.AVIATION...Another day with scattered afternoon SHRA/TSRA
expected, with greater coverage well inland. Have VFR conditions
in TAFs, though briefly lower conditions are possible with TSRA.
Excluded VCTS from coastal TAF sites as developing activity should
be well inland. Have VCTS elsewhere, though included a late
afternoon TEMPO group for TSRA at KGNV when and where coverage may
be greater.
&&
.MARINE...
Seas will be on the rise to 4 to 5 feet with long periods swells
across the offshore waters and nearshore waters across northeast
Florida. Onshore flow will become southerly on Monday, with seas
decreasing briefly before the influence of Tropical Storm Florence
returns to the waters by Tuesday. Seas will build quickly to
caution levels on Wednesday with Small Craft Advisory criteria by
Wednesday night as Florence is expected to turn northwest toward
the eastern seaboard. Winds and seas will stay elevated through
the end of the week regardless of Florence's track. Please refer
to the National Hurricane Center regarding official forecast
information for Tropical Cyclone Florence.
Rip Currents: Moderate risk with the potential for high risk on
Wednesday.
&&
.PRELIMINARY POINT TEMPS/POPS...
AMG 72 91 72 92 / 40 20 40 40
SSI 75 89 76 88 / 20 20 20 30
JAX 73 91 74 91 / 20 50 30 40
SGJ 73 88 74 88 / 10 20 30 30
GNV 73 91 73 90 / 10 30 10 40
OCF 72 90 72 91 / 20 30 10 40
&&
.JAX WATCHES/WARNINGS/ADVISORIES...
FL...Coastal Flood Advisory until 8 PM EDT this evening for Coastal
Duval-Coastal Flagler-Coastal Nassau-Coastal St. Johns-
Inland Flagler-Inland St. Johns-Putnam.
High Rip Current Risk until 8 PM EDT this evening for Coastal
Duval-Coastal Flagler-Coastal Nassau-Coastal St. Johns.
GA...Coastal Flood Advisory until 8 PM EDT this evening for Coastal
Camden-Coastal Glynn.
AM...None.
&&
Corless/Wolf/BrickerThe Jacksonville radar (KJAX), 60 km away, was scanning. The volume nearest the first event began at 21:01 UTC.
1 thunderstorm wind. Local standard time, as filed.
A tree was blown down across the westbound Interstate 10 and caused a partial road closure. Ground was saturated from recent rainfall. The time of damage was based on radar data. The cost of damage was unknown, but it was estimated for inclusion of the event in Storm Data.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2018Every state in 2018This day in weather historyWarnings in Florida, September 2018
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: 782048.