Alaska Extended Forecast Discussion
National Weather Service College Park MD
516 PM EDT Thu Jun 5 2025


Valid 12Z Mon 09 Jun 2025 - 12Z Fri 13 Jun 2025



...Guidance Evaluation/Preferences...
The WPC Alaskan medium range pressures, winds, PoPs, and QPF were 
mainly derived from a composite blend of well clustered guidance 
of the 12 UTC GFS/ECMWF/UKMET/Canadian models early on, with some 
ensemble mean contribution from the EC/NAEFS late. Other grids
were more reliant on the 19z NBM.  This solution maintains 
reasonable product continuity in an active pattern with above 
average predictability. Guidance offers reasonably similar larger 
scale flow evolutions into next week with a cold low dropping out 
of AK, leading to building ridging across the interior, while a 
deep layer cyclone haunts the Aleutians and southern Bering Sea. 


...Weather/Hazards Highlights...
A concentrated area of heavier rainfall is expected along the 
southern coast and into the Southeast this weekend, but fades next
week as the cyclone drops south and fills from late Sunday onward.
Snows in the Brooks Range should also be on the decline during 
the medium range period. Some gales are expected with a low moving
near the Aleutians next week. Rain should pick up across portions
of the Aleutians and AK Peninsula as well.

Roth



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

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