Aviation Forecasts Discussions (AFD) INFO

(EXTRACTED FROM FXUS63 KDTX 122005)


    Gusty northwest flow will continue through afternoon before
    decreasing in the evening.  Lake effect clouds and snow bands will
    continue to dissipate as drier air advects into southeast Michigan.
    Still may see a brief flurry at any TAF site but overall expecting
    skc-sct skies. Lake effect bands will still be active just to the
    west of forecast area and could see them brush at times FNT, YIP and
    DTW this afternoon and eve with bkn050 and few flurries but overall
    should remain vfr. NW flow around 15-20kts with gusts 25-30kts will
    gradually weaken into the evening. Weak surface high pressure
    ridging will bring skc-sct skies for first half of the night.
    Lighter winds will gradually back to the ssw by 12z. Clouds will
    also be increasing and lowering to 2-3kft after 12z ahead of an
    approaching winter storm. Light snow will quickly advect in from the
    nw around 15z as winds continue to back to the sse.
    
    For DTW...Strong and gusty nw winds will continue before decreasing
    during the evening.  Drier air advecting in is dissipating lake
    effect clouds and snow showers. Conditions should remain vfr with
    mainly sct-bkn clouds around 5kft.  Lake effect bands will remain
    active just to the west and may brush the airport briefly later this
    afternoon and evening with flurries as winds begin to gradually back
    to the west. Skc-sct skies most of tonight as weak high pressure
    ridge slides through backing the winds to ssw by 12z.  Clouds will
    be increasing towards morning ahead of an approaching winter storm.
    Ceilings will gradually lower to mvfr after 12z with light snow
    moving in from the nw around 15z. Visibilities should remain around
    6 miles for a few hours. Conditions should rapidly deteriorate after
    18z with several inches of snow accumulations expected along with
    low end mvfr ceilings and visibilities around 1sm. Winds will
    continue backing to ese by 00z.
    
    //DTW THRESHOLD PROBABILITIES...
    
    * Moderate confidence for bkn ceilings at or below 5000 feet at
    times this afternoon.
    
    * High confidence in northwest crosswind thresholds continuing
    through evening.