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  • NHC Atlantic Outlook

  • Atlantic 2-Day Graphical Outlook Image
    Atlantic 5-Day Graphical Outlook Image


    ZCZC MIATWOAT ALL
    TTAA00 KNHC DDHHMM

    Tropical Weather Outlook
    NWS National Hurricane Center Miami FL
    Issued by the NWS Weather Prediction Center College Park MD
    200 PM EDT Thu Sep 20 2018

    For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

    1. Satellite imagery shows that showers and thunderstorms associated
    with a westward-moving tropical wave located about 750 miles east of
    the Windward Islands have become less organized over the last
    several hours. There is no evidence of a surface circulation at this
    time, and a combination of dry air and strong upper-level winds are
    expected to make development of this system unlikely while it moves
    westward at 10-15 mph.
    * Formation chance through 48 hours...low...10 percent.
    * Formation chance through 5 days...low...10 percent.

    2. A non-tropical area of low pressure with gale-force winds is located
    about 150 miles north of Bermuda and is moving south-southeastward
    at about 15 mph. Although there are some signs of organization, dry
    air and strong upper-level winds are expected to limit development
    of this system over the next couple of days. However, conditions
    could become a bit more conducive for this low to gradually acquire
    some tropical characteristics early next week as the low moves south
    and then drifts westward to the southwest of Bermuda.
    * Formation chance through 48 hours...low...10 percent.
    * Formation chance through 5 days...low...20 percent.

    3. Another non-tropical low pressure system is forecast to develop by
    Friday night over the central subtropical Atlantic Ocean between
    Bermuda and the Azores. Conditions are expected to be conducive for
    the low to acquire some subtropical or tropical characteristics, and
    a subtropical or tropical cyclone could form late this weekend or
    early next week while the low meanders over the central Atlantic
    Ocean.
    * Formation chance through 48 hours...low...near 0 percent.
    * Formation chance through 5 days...medium...50 percent.

    4. A tropical wave is forecast to emerge off the west coast of Africa
    by Saturday. Some slow development of this system is possible early
    next week as it moves quickly westward across the low latitudes of
    the eastern tropical Atlantic Ocean.
    * Formation chance through 48 hours...low...near 0 percent.
    * Formation chance through 5 days...low...20 percent.

    Forecaster Orrison/Blake


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