Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 303 PM EST Mon Jan 25 2021 Valid 12Z Fri Jan 29 2021 - 12Z Tue Feb 02 2021 ...Overview and Guidance/Uncertainty Assessment... The WPC Alaskan medium range product suite was derived from reasonably well clustered guidance from the 12 UTC GFS/ECMWF/UKMET/Canadian models Friday into the weekend along with the 19 UTC National Blend of Models. Increasingly adjusted blend focus from the models to the compatible GEFS/ECMWF ensemble means onward into early next week amid growing forecast spread. This maintains good WPC product continuity. ...Weather/Hazards Highlights... A gradually weakening Bering Sea storm will approach West/Southwest Alaska into Friday to offer an enhanced snow risk. Ample downstream energy transfers will meanwhile favor well organized maritime low redevelopment and digging over the Gulf of Alaska into the weekend. An amplified upper ridge will meanwhile build upstream back over the Bering Sea in response to further upstream low genesis whose enhanced circulation seems slated to effect the Aleutians then southern Bering Sea this weekend into early next week. Forecast spread is less than stellar in Arctic stream flow rounding the top of the aforementioned Bering Sea ridge, but ridge position should allow a good channel for upper low/trough energies/height falls to dig down over a cooling/unsettling and locally snowy North Slope and Interior. Phasing of this stream into the Gulf of Alaska early next week could enhance maritime low developments. Schichtel Hazards: No significant hazards are expected over Alaska during this forecast period. 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 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