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Alaska Extended Forecast Discussion
 
(Caution: Version displayed is not the latest version. - Issued 1843Z Jun 15, 2019)
 
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Alaska Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
243 PM EDT Sat Jun 15 2019

Valid 12Z Wed Jun 19 2019 - 12Z Sun Jun 23 2019

The forecast period begins on Wednesday with an upper level trough
passing over the Arctic Coast and an upper low over western
Alaska, followed by a surface low developing over the north
Pacific that will likely track towards the Alaska Panhandle region
by Friday.  Greater model differences exist regarding a potential
upper level ridge axis near the Bering Sea, with the ECMWF
indicating more of a ridge compared to the GFS, and the ECMWF has
greater support from the ensemble means regarding the upper level
pattern.  The forecast becomes quite uncertain by the end of the
forecast period next weekend regarding the eventual break-down of
the Bering Sea ridge and the overall amplitude of the upper level
pattern.

A relatively quiet weather pattern is expected to continue going
into next week with no significant events on the horizon.  There
will likely be some showers north of the Brooks Range on Wednesday
in association with the Arctic trough passing through the region. 
Elsewhere, the best potential for any rain will be across the
southern third of the state.  Pleasant temperatures are expected
with highs generally from the mid 60s to upper 70s across inland
areas, and colder near the coasts. 

Hamrick


Additional 3-7 Day Hazard information can be found on the WPC
medium range hazards chart at:
https://www.wpc.ncep.noaa.gov/threats/threats.php

No significant hazards are expected over Alaska during this
forecast period.


WPC medium range Alaskan products including 500mb, surface
fronts/pressures progs and sensible weather grids can also be
found at:

https://www.wpc.ncep.noaa.gov/alaska/ak_5dayfcst500_wbg.gif
https://www.wpc.ncep.noaa.gov/alaska/akmedr.shtml
https://www.wpc.ncep.noaa.gov/alaska/ak_5km_gridsbody.html