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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
800 PM EDT Sat Sep 18 2021
For the North Atlantic...Caribbean Sea and the Gulf of Mexico:
The National Hurricane Center has issued the last advisory on
Post-Tropical Cyclone Odette, located a few hundred miles
east-southeast of Nantucket, Massachusetts.
1. Showers and thunderstorms associated with an area of low pressure
located about 600 miles east-southeast of the northern Leeward
Islands continue to show signs of organization. In addition,
satellite images and surface observations indicate that the
circulation is gradually becoming better defined. If the current
trend continues, advisories would likely be initiated on a tropical
depression or tropical storm later tonight or early Sunday. This
system is expected to be near the northern Leeward Islands on Monday
and Tuesday, and interests there should monitor its progress.
Upper-level winds are likely to become less conducive for
development when the system reaches the southwestern Atlantic by the
early to middle part of next week. Additional information on this
system, including gale warnings, can be found in High Seas Forecasts
issued by the National Weather Service.
* Formation chance through 48 hours...high...90 percent.
* Formation chance through 5 days...high...90 percent.
2. Showers and thunderstorms are also showing signs of organization in
association with a low pressure system located over the far eastern
Atlantic a few hundred miles south-southwest of the Cabo Verde
Islands. Environmental conditions appear conducive for further
development of this system, and a tropical depression is likely to
form during the next day or two while moving toward the northwest at
10 to 15 mph to the west of the Cabo Verde Islands. This system is
expected to reach cooler waters and an area of stronger upper-level
winds early next week, which should limit its development.
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 5 days...high...70 percent.
High Seas Forecasts issued by the National Weather Service
can be found under AWIPS header NFDHSFAT1, WMO header FZNT01
KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php