Alaska Extended Forecast Discussion NWS Weather Prediction Center College Park MD 346 PM EDT Sun Jul 21 2019 Valid 12Z Thu Jul 25 2019 - 12Z Mon Jul 29 2019 Models/ensembles have made a couple changes with the forecast but overall still show a trough/ridge pattern that translates eastward in time. Ensembles have the most stable solution over the past 36-48s hrs but some aspects of the GFS/ECMWF/Canadian were incorporated to minimize somewhat extreme solutions in each model. Trend has been for a quicker progression out of the central Pacific and a more N-S stretched ridge over NW Canada that likely pinches off an upper high in the Arctic. That combination modulates how the Bering system (Thu) pushes through western areas, but still likely translates into the Gulf by the weekend and then pushes through the Panhandle around next Sunday. Timing differences between the quicker 06/12Z GFS and slower 00Z GFS/ECMWF average out to where the 00Z ECMWF ensemble mean lied (and more or less the 06Z GEFS mean, albeit weaker). Pattern supports more precipitation (and convection) to intrude inland through the interior but not much of a break for the Panhandle with the lead system Thu/Fri to be followed by the Bering system Sunday. Temperatures are forecast to be within 5-10 degrees of normal for late July. 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 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