Area Forecast Discussion
Issued by NWS Fairbanks, AK
FXAK69 PAFG 212333
Northern Alaska Forecast Discussion
National Weather Service Fairbanks AK
233 PM AKST Sat Jan 21 2017
Models in decent agreement through 60 hours. Deep cold low 600 nm
north of Point Barrow. Associated trough digs all the way down to
south of Kodiak to a low in the North Pacific. Upper level ridge
poking into the eastern part of Mainland Alaska from Northwestern
The trough over the Arctic Coast is producing a little squeeze in
the pressure gradient. This is producing some cold wind chills on
the Arctic Coast and the Arctic Plain, hence the wind chill
advisories and warning.
Convergence zone through central Interior will eventually erode
away and when the clouds are eaten away the temperatures will
fall. Where the clouds are scarce the temperatures are around 40
to 45 below.
As the next strong low pushes eastward across the North Pacific,
it will spread warm air into Northern Alaska at least at lower
levels. This will cause steep inversions unless some wind can be
mixed in to eradicate the inversion. The warmer temperatures aloft
look to remain through next week.
Winds will increase across the Y-K Delta and the Saint Lawrence
Island areas beginning Sun as the North Pacific low moves closer
to the Aleutians as it moves eastward. Only light accumulations of
snow over the area from the Seward Peninsula south through
Wind Chill Advisory for AKZ201-AKZ202-AKZ204-AKZ205.
Wind Chill Warning for AKZ203.
Brisk Wind Advisory for PKZ210.
CF JAN 17