textproduct: Anchorage
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
LONG TERM FORECAST (Days 4 through 7: Sunday through Wednesday)
An omega block pattern will be in place at the start of the long term forecast period with a dying low in the Gulf of Alaska, building high pressure over the Bering Sea, and another low just south of the western Aleutians. The tight pressure gradient between the Bering high and Aleutian low will create a corridor of southerly winds up to storm-force through the western and central Aleutians Saturday night and Sunday. The low will track into the Gulf of Alaska for the first half of the week, setting up a rex block pattern with high pressure over the northern half of mainland Alaska and low pressure over the southern Alaska and the Gulf. Surface lows spinning up will likely bring elevated winds and precipitation to the Bristol Bay region, Kodiak Island, and the north Gulf coast Tuesday and Wednesday while the Copper River Basin and interior Alaska stays cold and dry.
AVIATION
PANC...While the terminal will remain mostly dry this morning, light freezing rain is expected between 15Z and 18Z as a front moves overhead with ample upper level support. Brief MVFR conditions are possible during this time. After frontal passage conditions will remain VFR with light northerly winds. The main storm system currently southwest of Kodiak Island will track into the Sound Friday morning, which may return light snow to the terminal and southerly wind. MVFR to IFR conditions are expected.
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