Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 646 PM EST Sun Nov 22 2020 Valid 12Z Thu Nov 26 2020 - 12Z Mon Nov 30 2020 ...Continued stormy pattern next week... ...Overview and Guidance/Predictability Assessment... A series of storms will pass through the region next/weekend as the overall patterns remains amplified and progressive. In general, the 12Z guidance has locked onto the overall pattern and evolution through the extended period however there is some spread that develops upstream that may affect the timing/location late in the period. As a whole, the slightly slowing trend has continued but the flow continues to be progressive. The preferred blend for this issuance comprised of the 12Z ECWMF/GFS/CMC/UKMET through Friday, then adding increasing amounts of the ensemble means through the weekend. Given the spread, consensus depicts the front to move into the Gulf then Panhandle later next weekend. ...Weather/Threats Highlights... The leading system along western Alaska/Y-K Delta/AK Pen will spread modest precipitation, locally heavy at times, along Kodiak across the southern Kenai Peninsula as the frontal boundary moves toward the East. Triple point will take aim on the northern Panhandle where precipitation should maximize around Yakutat before spreading down the Panhandle as the warm front comes ashore and weakens. Friday into Saturday, the next system in the Bering will spread rain/snow/wind across the Aleutians to southwestern Alaska as the parent low may slowly decay over Bristol Bay to the AK Pen. The amount and placement of where the associated precipitation occurs is a bit uncertain as the models differ on the amount of forcing over water vs land and moisture influx. Southern to southeastern-facing areas would be favored as is typical for this evolution. This includes the western side of Cook Inlet and southeastern Kenai, where several inches of precipitation are possible. Temperatures will remain well above normal along northern areas thanks to upper ridging and above normal lower level temperatures, extending along western/southwestern areas as well. Southeastern portion of the mainland into the Panhandle will see varied temperatures within several degrees of typical late November values. Campbell 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