Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 621 PM EDT Sun May 29 2022 Valid 12Z Thu Jun 02 2022 - 12Z Mon Jun 06 2022 ...Overview and Weather and Hazard Highlights.. The upcoming early June pattern still seems fairly quiet for Alaska. An early week warm upper ridge over the Interior shows some weakness in guidance into mid-late week to offer lingering chances for scattered precipitation and some temperature moderation. This ridge separates Arctic upper troughs/lows to the north of Alaska that periodically force several fronts through the North Slope and northern Interior from several closed upper level/surface lows in the North Pacific. In this flow, a lead/lingering closed low and effects will slowly weaken well offshore over the southern Gulf of Alaska this week, but expect some modest precipitation over coastal southern/southeast Alaska later period. Meanwhile, a closed upper trough/low with moderate main/triple point surface lows will slowly transition eastward from just to the south of the unsettled Aleutians to well offshore over the western Gulf of Alaska as a moderate maritime threat. ...Guidance/Predictability Assessment... Guidance solutions remain pretty well clustered overall at larger scales for much of the Alaskan domain and vicinity, but pesky small-mid scale differences remain. This is mainly evident with higher latitude impulses working into the North Slope and Interior. A WPC/Alaskan WFO collaborated decision to use a composite blend of the 12 UTC GEFS/NAEFS/ECMWF ensemble means seems to provide a good/consistent forecast basis over the Mainland and the North Pacific/Gulf of Alaska where main offshore low solutions remain well clustered. Manual edits were applied to offset the averaging process as needed to best maintain product continuity in an overall pattern with average to better predictability. Schichtel 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