Scientific Forecaster Discussion
fxak69 pafg 091159 cca
Northern Alaska forecast discussion...corrected
National Weather Service Fairbanks Alaska
259 am akst Fri Dec 9 2016
Models in decent agreement through 60 hours. 556 dam high center
east of wrangel island will remain quasi stationary through
Friday then sink south over the center of the state as a 553 high
center and persist into Sunday. The ridge will retreat south Mon
and then rebuild over northern Alaska later in the week. Models
still indicate that temperatures will slowly warm aloft next week.
Surface...high pressure will persist into Sunday. Skies will
generally remain clear under the high with continued cold air in
calm valleys such as the Yukon Flats...the Kanuti Flats...and with
slight moderation in other valleys of the southern interior where
east winds mix out the coldest air. Some clouds and flurries over
the eastern North Slope from Fri PM through Sat PM. A frontal
boundary will bring clouds and snow over the West Coast south of
the Bering Strait late sun into Monday.
Interior...high pressure will continue its hold over the area.
Temperatures over interior valleys will remain cold through the
weekend...while West Coast and Arctic coast will warm to near
normal by the weekend. Some winds will mix down to the surface
which will certainly produce temperatures differing significantly
over short distances. The Tanana Valley jet is blowing this
morning with gusts to 32 kts near Delta Junction. Winds will
persist into Friday in that area.
A Winter Weather Advisory remains in effect for higher terrain of
the upper Koyukuk valley for strong winds and blowing and drifting
snow. Winds will begin to diminish Friday afternoon.
Coastal hazard potential days 3 and 4...none.
Winter Weather Advisory for akz219.
Heavy freezing spray warning for pkz210.