Scientific Forecaster Discussion
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Northern Alaska forecast discussion
National Weather Service Fairbanks Alaska
357 am akdt sun Oct 22 2017
Aloft, at 500 mb, a 499 dam low is currently over the Yukon Delta
this morning. The upper low will then persist and weaken over the
Yukon Delta through Tuesday then pushed back to the north by
another low pressure system. This low over the Yukon Delta will
continue to produce snow showers for the Bering Strait and Saint
Lawrence Island through Monday.
At the surface, a 990 mb low currently located near Emmonak will
continue to weaken and move south to be located near Nunivak
Island as a 1000 mb low Monday morning. Weak low pressure will
persist across the North Slope through Monday. A 1026 ridge of
high pressure will remain in place over eastern Siberia and the
western Bering Sea.
West Coast and western interior: Winter Weather Advisory has been
cancelled as well as the high surf advisory for zone 213. Snow
showers will continue into Monday for Saint Lawrence Island but
winds have diminished some this morning. Snow showers will begin
to taper off by Monday afternoon. A frontal boundary will begin to
push into the southern West Coast zones by Tuesday evening.
Central and eastern interior: some mid level clouds moving across
the interior this morning keeping temperatures from bottoming out
in some areas. Clear skies expected Monday morning will drop
temperatures to near zero again. Not much in the way of precip
expected through Monday. Gusty winds are expected to develop
Monday night and Tuesday night along the northern foothills and
passes of the Alaska Range as winds aloft become southerly and
increase between the upper level low located near Nunivak Island
and an upper level ridge building over the Yukon.
Coastal hazard potential days 3 and 4...none.
Small Craft Advisory for pkz210.