Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 405 PM EDT Thu Mar 21 2019 Valid 12Z Mon Mar 25 2019 - 12Z Fri Mar 29 2019 A deep system will lift northward through the Bering Sea Mon-Tue next week as upper ridging builds over the eastern interior. The models/ensembles were gradually clustering closer together with the lead Bering system to start the forecast period with a central pressure likely below 960mb. Strong southwest to south winds (40-50kts) will push across the Aleutians and through the central Bering, decreasing toward the western coastal areas. This will bring in milder air through much of the state west of 150W or so with precipitation focused mostly across the Aleutians/AkPen/southwestern areas northward across the Seward peninsula and eastward to the Kenai peninsula. Amounts will generally be modest for southern coastal areas but comparatively higher for the typically much drier northwestern areas (Nome to Kotzebue). Blend of the 00Z ECMWF/12Z GFS sufficed to start. For Wed-Thu, favored the 00Z ECMWF over the 12Z GFS as the ECMWF and its ensemble mean showed a stronger upper high over the AK/Yukon border compared to the GFS and GEFS mean. This would likely help prevent the next system from pushing eastward through the Bering as high pressure dominates most of the interior next Thu/Fri. Fracasso Bullet points from the WPC Days 3-7 Hazards chart can be found at: https://www.wpc.ncep.noaa.gov/threats/threats.php - High winds across portions of mainland Alaska, Sun, Mar 24. - High winds across portions of the Aleutians, Mon, Mar 25. 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