Alaska Extended Forecast Discussion
National Weather Service College Park MD
458 PM EST Sun Nov 30 2025

Valid 12Z Thu 04 Dec 2025 - 12Z Mon 08 Dec 2025


...Overview...

A closed low will amplify over the Aleutians midweek before 
phasing with a trough centered over the Kamchatka Peninsula. 
Retrograding energy from a northern stream trough will negatively 
tilt over the eastern/central mainland by next weekend. Upper 
ridging with embedded transient shortwaves propagating through 
will remain over the Panhandle. An eastern Siberian ridge will 
gradually build into the Bering Strait.


...Guidance Evaluation and Preferences...

A multi-model blend is used on day 4. The Euro suite is favored 
in the blend with some Canadian suite after day 4, because of
their reasonable solution to the mid-level pattern evolution. The
GEFS mean has an unusual amount of spread beyond day 5, therefore
it wasn't featured in the blend beyond day 4.


...Weather/Hazards Highlights...

Cold air will begin spreading southward at the middle of next 
week, as high pressure builds over eastern Siberia, the Bering Sea
and the North Slope. Meanwhile, showers and mountain snow will 
persist along the Gulf Coast. There's potential for heavy 
precipitation along the Panhandle next weekend associated with a 
low pressure system. There's high wind potential for the Lower
Yukon/Kuskokwim, and Nunivak Island on Wednesday and Thursday, but
not enough certainty to introduce a hazard area at this time.


Kebede


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