Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 428 PM EDT Tue Sep 17 2019 Valid 12Z Sat Sep 21 2019 - 12Z Wed Sep 25 2019 Active pattern will continue for Alaska this weekend into next week. Lead system will push through the Panhandle Saturday then quickly into Canada. Next system is forecast to trek near (just south of) the Aleutians Sunday and into the Gulf Monday. Consensus of the deterministic models was used to take the low (and perhaps triple point) into the Gulf. GFS was a bit slower than the ECMWF and most ensembles, so trended toward that quicker consensus based on better continuity/agreement. Locally heavy rain will be possible along the coast from the eastern Kenai to Yakutat. Parent low will slowly dissipate in the Gulf thereafter, maintaining a rather wet period for the Panhandle and Southeast coast. Lastly, another system will enter the Bering around midweek next week, though its details were highly uncertain as it may be a combination of tropical moisture (or an organized low) with a northern stream system, both of which will likely change in forward speed over the next few days. Fracasso 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 rain across portions of the Alaska Panhandle and mainland Alaska, Fri-Sat, Sep 20-Sep 21 and Mon-Tue, Sep 23-Sep 24. 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