Area Forecast Discussion
Issued by NWS Jacksonville, FL
FXUS62 KJAX 090130
Area Forecast Discussion
National Weather Service Jacksonville FL
830 PM EST Thu Dec 8 2016
...Much cooler airmass arrives later tonight...
.UPDATE...Very fast southwest-west flow aloft is noted in water
vapor imagery across the southeast and east CONUS associated with
mid/upper level trough extending from Great Lakes to the S Central
U.S. Upper level jet noted from TN valley to off the Mid Atlc coast
at 150-165 kt. Disturbances in west-southwest flow aloft will bring
periods of partly to mostly cloudy skies across the CWA...as strong
sfc cold front over SE GA at 8 pm...noted mainly by a dewpoint drop
and increased NNW winds...moves southeast overnight. There appears
to be enough lift and moisture from these disturbances to produce
some very light precip (~15-20 percent chance) and some sprinkles
for the srn tier of our counties after midnight. Mosaic radar over
the NE Gulf of Mexico does show areas of light precip...some of it
perhaps virga...in the lowest radar scans moving toward N Central FL
this evening. For temps...did not change the overnight lows
much...fcsting mid 30s over inland SE GA and lower to mid 40s over
NE FL. Sfc winds will increase to 10-15 kt immediate behind the
front tonight then settle to 5-10 kt by early morning. Wind chills
at sunrise projected to dip into the upper 20s north parts of CWA
with 30s most other locales.
.AVIATION...VFR with mid to high clouds overnight into Friday. NNW
to N winds about 5-12 kt.
.MARINE...Nly Winds are on their way to increase as 41008 is now up
to NNW 19G21kt. Current forecast on track with AN evening update to
refresh the wording to SCA conditions that are forecast to begin
around 9 PM.
.PRELIMINARY POINT TEMPS/POPS...
AMG 36 53 28 55 / 0 0 0 0
SSI 42 54 37 56 / 0 0 0 0
JAX 41 57 35 59 / 0 0 0 0
SGJ 46 58 44 62 / 10 10 0 10
GNV 42 58 34 64 / 10 10 0 0
OCF 44 59 37 66 / 20 10 0 0
FL...Freeze Watch from late Friday night through Saturday morning for
GA...Freeze Watch from late Friday night through Saturday morning for
Echols-Inland Camden-Inland Glynn-Jeff Davis-Pierce-Ware-
AM...Small Craft Advisory until 4 AM EST Saturday 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 until 4 PM EST Friday for Coastal waters
from Altamaha Sound to Fernandina Beach FL out 20 NM-
Coastal waters from Fernandina Beach to St. Augustine FL
out 20 NM-Coastal waters from St. Augustine to Flagler
Beach FL out 20 NM.