Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 500 PM EST Fri Jan 03 2020 Valid 12Z Tue Jan 07 2020 - 12Z Sat Jan 11 2020 ...Weather/Hazards Highlights... Upper ridging is forecast to work across the southern Arctic Ocean early next week and eventually heights rise underneath over the interior to gradually ease the recent cold snap. Active and fairly progressive flow cuts underneath into a stormy Bering/Aleutians and Gulf of Alaska. Models and ensembles continue to struggle with embedded system timing in the flow, but overall still align adequately with the larger scale flow evolution. This will carry a couple areas of low pressure toward and into the Panhandle early-mid next week. As these systems exit into British Columbia, the main focus shifts to the Bering Sea as a series of potentially deep lows with a threat of high winds/waves and heavy precipitation feed into the region all next week. Renewed lead triple point low developments meanwhile work downstream into an unsettled Gulf of Alaska again, with renewed potential into later next week. ...Guidance/Predictability Assessment... The 12 UTC GFS/ECMWF/UKMET/Canadian offer embedded system variance, but seem sufficiently clustered to allow preference for a blend with the 12 UTC GEFS/NAEFS/ECMWF ensemble means days 4/5 Tue/Wed. Suggest a transition to a more compatable blend of ensembles by day 7/8 to maintain good WPC continuity along with the NBM. 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 Hazards: - Much below normal temperatures for parts of mainland Alaska, Mon-Tue, Jan 6-Jan 7. 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