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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
800 AM EDT Fri Oct 27 2017
For the North Atlantic...Caribbean Sea and the Gulf of Mexico:
1. Shower and thunderstorm activity has increased and become more
concentrated in association with a trough of low pressure over the
northwestern Caribbean Sea. Environmental conditions are expected
to be conducive for development today and Saturday, and a tropical
depression could form as the system moves northward over the
northwestern Caribbean Sea. Increasing upper-level winds will make
conditions less favorable when the system moves north of Cuba and
merges with a cold front on Sunday. Interests in the Cayman Islands
and central and western Cuba should monitor the progress of this
system. Regardless of development, this disturbance is expected to
produce locally heavy rainfall over the Cayman Islands, Jamaica,
and portions of Cuba during the next day or two. These rains are
forecast to spread northward across portions of South Florida and
the Keys on Saturday, and over the northwestern Bahamas Saturday
night and Sunday. An Air Force Reserve reconnaissance aircraft is
scheduled to investigate this system this afternoon, if necessary.
* Formation chance through 48 hours...medium...60 percent.
* Formation chance through 5 days...medium...60 percent.