High Surf Advisory 4, NWS Jacksonville, FL

Area Forecast Discussion
National Weather Service Jacksonville FL
321 PM EDT Fri Sep 15 2017

.NEAR TERM /Through Saturday/...
Scattered showers and t-storms expected along sea breezes and
surface trough near FL-GA border through early evening...then will
diminish. Lesser coverage expected Saturday...with best coverage
along I-75 corridor. Low temps tonight expected to be in the lower
70s interior se GA and the Suwannee Valley Region of ne FL...with
mid 70s elsewhere. High temps Saturday will be in the upper 80s
inland...mid 80s coast.

.SHORT TERM /Saturday Night Through Sunday Night/...

Jose will be well east of the region Saturday night, but large
swells will be moving into the regional waters. A shortwave trough
over southeast Georgia will slide east of the region, with drier
northerly flow pushing into the region for Sunday. This will make
for a pleasant second half of the weekend. Highs on Sunday will be
in the mid to upper 80s.

.LONG TERM /Monday Through Thursday/...

Subsident and dry air-mass continues Monday and Tuesday with sfc
high pressure located north of the region that eventually shifts
over the Gulf coast region. However, Jose may pinwheel some
moisture into northeast Florida on Monday, bringing an increase in
rain chances. Dry conditions are forecast for Tuesday as drier air
moves back into the region. Weak troughing is then forecast over
the region through the end of the week as Jose potentially gets
trapped off the northeastern conus. Rain chances increase through
the end of the week, especially for southeast Georgia.
Temperatures will generally remain near normal through the period.

&&

.AVIATION...
VFR conditions expected next 24 hrs...except locally lower in
scattered afternoon TSRA.

&&

.MARINE...
High pressure will gradually build to the north of our waters this
weekend. Meanwhile, ocean swells emanating from Tropical Storm
Jose will increase in frequency throughout the coastal waters this
weekend and will combine with a tightening local pressure gradient
to result in combined seas building to caution levels of 4 to 6 feet
offshore tonight, with an extended period of Small Craft Advisory level
seas expected from Saturday through at least Monday, with SCA conditions
persisting offshore from Saturday through around Tuesday of next week.
A tightening local pressure gradient between Jose and high pressure
centered over the Appalachians/Mid- Atlantic states will create
strengthening northeasterly winds this weekend, with speeds reaching
caution levels of 15-20 knots in the offshore waters Saturday night.
Winds will shift to a northerly direction on Sunday as Jose turns
northward and bypasses our latitude, with speeds reaching caution
levels in the near shore waters. Caution levels will prevail in
the offshore waters through Sunday night. Gradual decrease in winds
and seas expected Monday thru Tuesday.

Rip Currents: A long period easterly ocean swell emanating from
Tropical Storm Jose will increase rip current risk to high this
weekend.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  71  87  69  87 /  20  40  10   0
SSI  75  85  73  85 /  10  20  10  10
JAX  74  87  72  86 /  10  20  10  10
SGJ  76  86  73  85 /  10  20  10  10
GNV  73  89  70  88 /  50  40  10  10
OCF  73  90  71  88 /  40  40  10  10

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...Coastal Flood Advisory until 7 AM EDT Sunday for Clay-Coastal
     Duval-Flagler-Inland Duval-Putnam-St. Johns.

GA...None.
AM...Small Craft Advisory for hazardous seas from 8 AM Saturday to 6
     AM EDT Tuesday for Waters from Altamaha Sound GA to
     Fernandina Beach FL from 20 to 60 NM-Waters from Fernandina
     Beach to St. Augustine FL from 20 to 60 NM-Waters from St.
     Augustine to Flagler Beach FL from 20 to 60 NM.

     Small Craft Advisory for hazardous seas from 3 PM Saturday to 4
     AM EDT Monday for Coastal waters from Fernandina Beach to
     St. Augustine FL out 20 NM-Coastal waters from St.
     Augustine to Flagler Beach FL out 20 NM.

     Small Craft Advisory for hazardous seas from 8 PM Saturday to 6
     AM EDT Sunday for Coastal waters from Altamaha Sound to
     Fernandina Beach FL out 20 NM.

&&

Wolf/Kennedy/Corless