Area Forecast Discussion
Issued by NWS Fairbanks, AK

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000
FXAK69 PAFG 232330
AFDAFG

Northern Alaska Forecast Discussion
National Weather Service Fairbanks AK
230 PM AKST Thu Nov 23 2017

.DISCUSSION...

Aloft...at 500 hpa...Ridging will build over the Bering Strait
and upper level troughing will persist over Northern Alaska
through the weekend. Ridging will breakdown as an upper level
low tracks across the Aleutians Saturday night into Sunday. This
upper low will track near Kodiak Island by 4am Monday.

Surface...A 988 mb low near Barrow will move SE to the Brooks Range
by Fri afternoon before merging with a low in the Canadian
Archipelago.A ridge of high pressure will move to the Western
Arctic by Fri afternoon, then move E across the Arctic as a low
pressure system and weather front move to the Western Arctic Sat.
A 957 mb low will develop in the western Bering Sea Sunday
morning and track east across the Aleutians Sunday night.

Arctic Coast and Brooks Range...Low remains in the area, with
trough extending east, so cloudy conditions will prevail with
some light snow or flurries through the day. As the low moves
southeast, then east some enhanced snow on the north side of the
Brooks Range with the upslope component. Storm total amounts will
around 3 to 5 inches in the Brooks range as the low moves east.
1 to 2 inches for the North slope through Friday night. Winds
over the Brooks Range will generally be from the southwest at 10
to 20 mph, while over the coastal areas the winds will be
northeast to east at 10 to 20 mph. Passes in the Brooks range
could see low visibility with these snow showers as the low
passes through on Friday. Snow should taper off by Saturday
morning.

West Coast and Western Interior...Ridging will quiet things across
the west coast through FRiday night. The frontal boundary will
move near Saint Lawrence Island Saturday morning and spread some
snow possibly mixing with rain across the Bering strait on
Saturday. Winds from the north through Friday becoming southerly
on Saturday. Winds in the Bering strait will be around 25 to 40
mph. Developing low pressure in the Southern Bering on Sunday will
mainly affect the Aleutians.

Central and Eastern Interior...Weak troughing aloft will keep the
Interior on the cloudy side which will help keep temperatures
from bottoming out. Temperatures will remain cold aloft through
the weekend and areas that do see some clearing will see
temperatures drop pretty dramatically, then warm when clouds
return. Winds will generally be light and variable. Little to no
snowfall expected through the weekend.

Coastal Hazard Potential Days 3 and 4...None.


Extended: GFS showing a southerly push of warmer air across the
interior by mid week. This will likely increase the winds in
the Alaska range and increase the temps for the central and
southern interiors.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
Heavy Freezing Spray Warning for PKZ200-PKZ220-PKZ225-PKZ230-
PKZ235.

Small Craft Advisory for PKZ200-PKZ210-PKZ220-PKZ225-PKZ230-
PKZ235.

Brisk Wind Advisory for PKZ215.
&&

$$

JK NOV 17



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