Scientific Forecaster Discussion
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Northern Alaska forecast discussion
National Weather Service Fairbanks Alaska
148 am akdt Fri Jun 23 2017
seasonal Summer time pattern to continue over northern Alaska. An
upper level ridge currently centered over Beaver Creek in the
Yukon will continue to drift slowly to the east and northeast
today and Saturday as a long wave trough over the Bering Strait
slowly digs south and east into the western interior and western
North Slope today and into the central interior and central North
A weak thermal trough along a Arctic Village to McGrath line will
continue to weaken as surface high pressure builds north and east
into the western and central interior. Moisture rotating around a
1010 mb low in the Gulf of Alaska will bring an increase in
moisture in the low and mid levels of the atmosphere over the
southern interior and will increase instability over the southeast
interior today and Saturday. Scattered rain showers and isolated
thunderstorms are expected along and south and east of a line from
Anvik to manely Hot Springs to Fairbanks to just north of Eagle.
Expect mostly dry conditions with partly cloudy skies north and
west of this line over the northeast, central and western
interior. A weak front along the West Coast will produce scattered
showers west of White Mountain as well as areas of fog and low
Southwest winds along the western North Slope will continue and
increase to the 20 to 35 range this afternoon, tonight and
Saturday as the pressure gradient between the building surface
high over the southwest interior and a low pressure trough over
the Chukchi Sea builds. Expect moderate surf with 1 to 2 feet
above normal tides along the western North Slope today through
Coastal hazard potential days 3 and 4...none.
relative humidity value are expected to remain above 25 percent
in the central and eastern interior, except for the Yukon Flats to
the northeast Brooks range where they will dip into the low 20s.
In the western interior and West Coast values will generally be in
the 30s and 40s. A weak pressure gradient over the interior
through Sunday will keep sustained winds below red flag criteria
across the forecast area.
Hydrology...no concerns at this time.
Small Craft Advisory for pkz210-pkz220-pkz225-pkz230.
Gale Warning for pkz230.
Brisk Wind Advisory for pkz235.