Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 419 PM EDT Sun Jul 7 2019 Valid 12Z Thu Jul 11 2019 - 12Z Mon Jul 15 2019 The anomalous upper level ridge that has been anchored over Alaska recently will continue to weaken some and retrograde to the west over western Siberia and the northern Bering Sea by the beginning of the medium range forecast period. The ensemble means continue to support a broad ridge axis extending across the Alaska mainland although mid-level heights will be lower than they are currently. Meanwhile, a broad upper level gyre centered near the western Aleutians at the beginning of the forecast period is progged to slow track to the east across the southern Bering Sea, with multiple shortwave perturbations pivoting around it. Given reasonable synoptic scale agreement among the deterministic models, a blend of the CMC/GFS/ECMWF sufficed through day 6, followed by increasing percentages of the EC and GEFS means by days 7 and 8. Daily maximum temperatures are forecast to generally be in the 70s to middle 80s for inland portions of the state, and cooler near the coastal areas for the end of the week. There may be a few additional record highs, however the most anomalous readings are expected before the commencement of the medium range period. Temperatures will likely be a few degrees cooler by next weekend and beyond. There will be some scattered showers and storms around during the afternoon hours across portions of southern Alaska, and also across the central Aleutians as the Pacific low passes by the region. Hamrick 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