Area Forecast Discussion
Issued by NWS Jacksonville, FL

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FXUS62 KJAX 150758
AFDJAX

Area Forecast Discussion
National Weather Service Jacksonville FL
258 AM EST Sun Dec 15 2019

.NEAR TERM [Through Tonight]...

...AREAS OF DENSE FOG INLAND AREAS EARLY THIS MORNING...

Today...Patchy dense fog expected over inland areas around sunrise,
with best chances across inland NE FL along the I-75 corridor and
the Suwannee River Valley, but still uncertain if it will become
widespread and organized enough for a dense fog advisory. Otherwise
expect high pressure over the region to provide for Mostly Sunny
skies after any inland fog dissipates by the mid morning hours.
Light and variable winds become East 5-10 mph during the afternoon
hours and this will keep the Atlc Coastal areas cooler with highs
in the 60s, while inland areas will range from near 70 across
inland SE GA and lower to middle 70s for inland NE FL.

Tonight...High pressure slides east of the region into the Atlc
and steering flow becomes southerly and expect overnight lows
slightly warmer with 40s over inland SE GA/Suwannee River Valley
and 50s elsewhere. Low level moisture available under Mostly Clear
skies and light winds for another night of at least patchy dense
fog during the overnight hours.

.SHORT TERM [Monday Through Tuesday]...

Dry weather comes to an end as high pressure moves off and a cold
front passes through the region on Tuesday. A round of showers
with embedded thunderstorms is expected with this boundary.
Continued south-southwesterly flow will advect warm air causing
temperatures to rise well above climo. Highs peak in the mid to
upper 70s with the potential for our southern counties to be in
the low 80s.

.LONG TERM [Wednesday Through Saturday]...

High pressure builds in behind the frontal passage bringing a
drier, colder air mass over the region. Widespread freezing
temperatures are possible across inland counties Wednesday night.
Below climo temperatures on Wednesday rise to near normal by the
end of the week. On Friday, as the high moves off to the
northeast, an inverted trough develops along the Atlantic coast
bringing the potential for coastal showers. The trough strengthens
on Saturday increasing the chance for onshore showers.

&&

.AVIATION...
[Through 06Z Monday]

Locally dense fog possible at inland TAF sites of GNV/VQQ and have
placed LIFR VSBYS from 09z through 13z time frame, while IFR VSBYS
possible at JAX/CRG after 09z, otherwise remaining VFR at coastal
TAF sites of SSI/SGJ through the period.

&&

.MARINE...

High pressure over the waters today will generally lead to light
and variable winds 5 to 10 knots with seas 2-5 ft. High pressure
moves east of the local waters with winds becoming south to
southeast 10-15 knots tonight through Monday Night with seas 3-6
ft. Ahead of the next front on Tuesday, south to southwest winds
increase to 15-20 knots with seas 3-6 ft. Cold front crosses the
waters Tuesday Night with Northwest winds increasing to 20-25
knots and expecting Small Craft Advisory headlines that will
continue into Wednesday and Thursday as Strong High Pressure
builds north of the waters and Winds become North to Northeast at
20-25 knots and seas build into the 5 to 9 feet.

&&

.PRELIMINARY POINT TEMPS/POPS...

AMG  68  45  76  61  74 /   0   0   0  30  60
SSI  64  54  74  62  74 /   0   0   0  10  60
JAX  69  51  78  61  78 /   0   0   0  10  60
SGJ  68  56  77  62  79 /   0   0   0  10  30
GNV  73  51  78  61  78 /   0   0   0   0  60
OCF  75  52  81  61  80 /   0   0   0   0  30

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...None.
GA...None.
AM...None.
&&


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.