Area Forecast Discussion
Issued by NWS Fairbanks, AK

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FXAK69 PAFG 301237
AFDAFG

Northern Alaska Forecast Discussion
National Weather Service Fairbanks AK
437 AM AKDT Thu Mar 30 2017

.SYNOPSIS...
Aloft...
The long wave trough over the West Coast and Western Interior of
Alaska will retrograde over the West Coast and Eastern Bering Sea
by Fri then persist into next week. The long wave ridge over NW
Canada will build over eastern Alaska Fri and persist into next
week. South flow over the Interior will persist through Fri and
then weaken over the weekend. This will cause well above normal
temperatures over the southeast Interior today that will spread
to the northern and western Interior Fri.

There is a strong short wave trough over the Alaska Range will
move to Galena to Old Crow by 4pm Thu...to Ambler to Barter Island
by 4am Fri...to Ambler to Deadhorse northeast by 4pm Fri...then
weakening in place. Expect another 1-2 inches of snow over the
Interior from Denali to Coldfoot today with the snow amounts much
less the the west and east of these areas. The snow will end with
the trough as it moves north today. Just a chance of snow expected
north of the Brooks Range with the trough.

Weak to moderate chinook winds will develop just after the trough
moves north of the Alaska Range today and continue into Fri then
decrease over the weekend.

Surface...
A low pressure trough stretching from Barrow to Nome to St Matthew
Island will weaken today. There are patchy flurries and fog along
this features. There are also north winds gusting to 25kt along
west coast capes with this feature.

A second trough in the western Chukchi Sea will move to Barrow to
the Bering Strait Fri. Will see another batch of flurries and fog
with this trough and another batch of north winds gusting to 25
kt.

A 1002 mb low near Denali Park has a weather front extending from
Denali to Coldfoot. The low will move to Bettles as a 1000 mb low
by 4pm Thu...to Anaktuvuk Pass as a 1002 mb low by 4am Fri...to
just north of Barter Island as a 1004 mb low by 4pm Fri...and then
continuing north. This low is feeding moisture north over the
Interior and causing snow along the front now that will taper off
rapidly as the low moves north. Could see another 1-2 inches of
snow today in zones 221 220 and 219...with much lighter amounts to
the east. Will see just a chance of snow or flurries with the low
north of the Brooks Range.

A low south of Cold Bay will move north to Bristol Bay Fri and
then weaken through Sat. An occluded/warm front stretching east
from this low will move along the Gulf of Alaska Coast by 4am
Fri...and to Bethel to Eagle by 4pm Fri...and to Bethel to Arctic
Village by 4pm Sat. With this front expect downslope conditions
to keep conditions dry in the southeast Interior...Flurries with
the front over the northern Interior...and a chance of snow with
the front in the western Interior.

Well above normal temperatures over the southeast Interior today
will spread to the northern and western Interior Fri.
On the West Coast well below normal temperatures will warm to
near normal Fri...while the North Slope will remain near normal.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory for AKZ219-AKZ220-AKZ221.

Brisk Wind Advisory for PKZ200-PKZ210-PKZ220.
&&

$$

JB MAR 17


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