Aviation Forecasts Discussions (AFD) INFO

(EXTRACTED FROM FXUS61 KPHI 171428)


    The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
    KILG, KMIV, KACY and surrounding areas.
    
    Today...VFR through early/mid afternoon as clouds lower, then
    MVFR/IFR conditions develop after about 20z from southwest to
    northeast as snow and rain arrive. Snow is expected at the
    terminals, except MIV and ACY where it will mix with rain before
    changing to all rain. Northerly winds less than 10 knots,
    becoming east and then southeasterly. Moderate confidence on the
    timing.
    
    Tonight...Widespread precipitation including some moderate to
    heavy snow at times. IFR or lower conditions, especially with
    heavier snowfall rates. Some rain may mix in up to the PHL
    metro. Snowfall rates of up to 1-inch per hour possible and this
    is when accumulations would be the most efficient. Snow/rain
    ends quickly after 05z from southwest to northeast with
    conditions improving to VFR by daybreak. High confidence
    regarding precipitation occurring, but low confidence on a
    wintry mix into the I-95 terminals. Light and variable winds
    overall, becoming west-northwest overnight less than 10 knots.
    
    OUTLOOK...
    Sunday-Sunday night...VFR. Northwest winds may gust around
    15-20 knots Sunday morning-midday. Confidence: Well above
    average.
    
    Monday...VFR early, lowering to MVFR or IFR during the
    afternoon or evening with rain. South to southwest wind.
    Confidence: above average.
    
    Monday night...MVFR/IFR conditions continue with rain possible
    in the evening, and low clouds/dense fog possible overnight.
    Confidence: Above average.
    
    Tuesday...MVFR/IFR conditions possible through midday in low
    clouds/fog. Conditions improving to VFR during the afternoon.
    Southwest winds may gust around 20-25 knots in the afternoon.
    Confidence: average.
    
    Tuesday night...VFR early, then possibly lowering to MVFR/IFR
    as low clouds/fog may develop overnight. Confidence: average.
    
    Wednesday...MVFR/IFR conditions possible early with low
    clouds/fog. Conditions improving to VFR during the day. chance
    of showers late in the day. Southwest winds may gust around
    20-25 knots. Confidence:Above average.