Aviation Forecast Discussions Data
Select Site:

(EXTRACTED FROM FXUS66 KSEW 222130)


    Light east-southeasterly flow aloft this afternoon and
    evening before turning southwesterly overnight as both an upper
    level ridge over BC continues to work inland and as an upper level
    low centered over Nevada dissipates. The air mass is generally dry
    and stable...although low level moisture is expected to increase
    along the coast and near the Strait of Juan de Fuca overnight
    tonight as onshore surface flow continues. This will lead to the
    development of MVFR to possibly IFR conditions in these locations
    while the remainder of W WA is expected to remain VFR with only a
    few or SCT high clouds present. As has been the pattern lately...VFR
    conditions are expected to return to all locations by late Wednesday
    morning.
    
    KSEA...VFR conditions expected to continue over the next 24 hours.
    Surface winds northwest 5 to 10 knots this evening and tonight
    before becoming southwest early Wednesday morning...turning more
    westerly Wednesday afternoon. SMR