Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 630 PM EDT Mon Jun 20 2022 Valid 12Z Fri Jun 24 2022 - 12Z Tue Jun 28 2022 ...Overview... An upper level ridge is forecast to be in place across much of the state and western Canada to close out the week and into the weekend, and probably last into early next week. There will be a few low pressure systems over the North Pacific, south of the main ridge axis, and a strong low pressure system over the Arctic will result in a cold front approaching northwestern Alaska by the weekend, but it is not expected to make much southward progress into the state. ...Guidance Evaluation/Predictability Assessment... The 12Z deterministic model guidance is in good synoptic scale agreement across the Alaska domain through about Sunday. By late Sunday, the CMC becomes more progressive with the Arctic trough crossing northern Alaska and loses ensemble support, and also stronger with the ridge axis across mainland Alaska, so more of the GFS/ECMWF were incorporated for the latter half of the forecast period along with some previous WPC continuity. More of the ECENS/GEFS was used for next Monday and Tuesday to account for greater mesoscale differences. ...Weather and Hazard Highlights... The Aleutians and far western mainland Alaska should have the greatest rainfall chances and cloud cover, with locally heavy rain and gusty winds expected for portions of the Aleutians Thursday night into Friday, between an area of low pressure to the west and a rather strong high pressure system for June near Cold Bay. After a shortwave aloft and cold front pass by the Interior, leading to some cooler temperatures late this week, the southeast portion of the state will be under the main ridge axis, and partly cloudy skies this weekend into early next week are expected. Temperatures will become very warm for interior southern and southeast Alaska for the weekend, with highs in the 80s expected. Cooler conditions will be expected right along the coast, the Aleutians, and Brooks Range, but still warm when compared to June standards. Hamrick No significant hazards are expected over Alaska during this forecast period. Additional 3-7 Day Hazard Information can be found on the WPC medium range hazards outlook 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