ALASKA EXTENDED FORECAST DISCUSSION NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 246 PM EDT SUN AUG 07 2016 VALID 12Z THU AUG 11 2016 - 12Z MON AUG 15 2016 EXTRA-TROPICAL 'OMAIS' REMAINS ON TRACK TO ENTER THE MID-LATITUDE WESTERLIES AND FAR WESTERN ALEUTIANS ON DAY 4...AND MIGRATE A WARM...WINDY AND RAINY PATTERN TO THE SOUTHERN THIRD OF THE STATE. THROUGH DAY 6, THE DEEP SURFACE CYCLONE MIGRATES ACROSS THE ENTIRE CHAIN AND SOUTHERN BERING FROM WEST TO EAST --- THEN SHEARS OUT QUICKLY DOWNSTREAM OVER WESTERN ALASKA ---ALONG 155W --- WITH SECONDARY SHORTWAVE DEVELOPMENT IN THE GULF OF ALASKA AROUND DAY 7. THE 7/00Z ECENS AND 7/00Z GEFS SERVED AS THE BASELINE FOR THE GRID FILES TODAY. ALTHOUGH THE 7/00Z DETERMINISTIC GFS/ECMWF WERE DECENT REPRESENTATIONS OF THE SMALLER-SCALE DETAILS THROUGH 12/12Z --- THE DIFFERENCES ALOFT INVOF THE WEST CENTRAL ALASKAN COAST (MAINLY ALONG THE NORTHERN PERIPHERY OF THE MID-LEVEL CYCLONE) FORCED AN ALL MEANS APPROACH. VOJTESAK