Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 620 PM EDT Sat Jun 27 2020 Valid 12Z Wed Jul 01 2020 - 12Z Sun Jul 05 2020 ...Guidance/Predictability Assessment... The WPC Alaskan medium range product suite for days 4-8 was primarily derived from a blend of reasonably well clustered solutions from the 12 UTC ECMWF and GEFS/ECMWF ensemble means along with the 19 UTC National Blend of Models. This maintained good WPC continuity. ...Overview and Weather/Hazard Highlights... Yet another organized Bering Sea low is expected to push east across mainland Alaska along with a slowly weakening surface front Wednesday into Thursday to generate unsettled and showery conditions with passage. Meanwhile upstream, a deepened low pressure system is forecast to lift and gradually weaken across the Bering Sea Wednesday-Friday as a lead front with enhanced rains works across the Aleutians then into southwest/AKpen and western Alaska. A second deepened low may follow into the Aleutians and Bering Sea Friday and next weekend with another weather focusing lead front. These systems also offer a maritime wind and wave hazard. This storm track favors warming upper ridge building downstream into mainland Alaska for the upcoming holiday weekend. Schichtel 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