Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 522 PM EDT Thu Apr 02 2020 Valid 12Z Mon Apr 06 2020 - 12Z Fri Apr 10 2020 ...Guidance/Predictability Assessment and Weather/Threats Highlights... The WPC Alaskan medium range product suite was mainly derived from a composite blend of reasonably well clustered guidance from the 12 UTC GFS/ECMWF and GEFS/NAEFS/ECMWF ensemble means along with the 19 UTC National Blend of Models. This maintain good WPC continuity in a pattern with near average predictability. Ample Bering Sea storm energy will work robustly inland over the cooling/snowy Interior and North Slope leading into this medium range period. Energy transference will then support low/system formations over the Gulf of Alaska next week. This offers a maritime threat for the Gulf along with a heavy precipitation threat for southern and especially Southeast Alaskan into midweek. Upstream, there still remains a good signal for the gradual approach of amplified mid-upper level closed low/trough and deepened low from over the north Pacific toward the Aleutians mid-later next week along with an associated weather focus and risk. 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: - Heavy precipitation across portions of mainland Alaska, Sun, Apr 5. - Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Tue-Wed, Apr 7-Apr 8. - High winds across portions of mainland Alaska, Sun, Apr 5. - High winds across portions of the Alaska Panhandle and mainland Alaska, Tue-Wed, Apr 7-Apr 8. - Much above normal temperatures across portions of mainland Alaska, Sun, Apr 5. 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