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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
200 PM EDT Tue Sep 28 2021
For the North Atlantic...Caribbean Sea and the Gulf of Mexico:
The National Hurricane Center is issuing advisories on Hurricane
Sam, located several hundred miles east of the northern Leeward
1. Showers and thunderstorms remain disorganized in association with a
a broad area of low pressure located several hundred miles
southwest of the Cabo Verde Islands. Environmental conditions are
conducive for gradual development, and a tropical depression is
likely to form during the next couple of days while the system
moves slowly westward to west-northwestward over the central
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 5 days...high...80 percent.
2. A broad area of low pressure located over the far eastern Atlantic
several hundred miles south-southeast of the Cabo Verde Islands is
producing a large area of showers and thunderstorms. This shower
activity is gradually becoming better organized, and a tropical
depression is expected to form in a day or so while the disturbance
moves west-northwestward at 10 to 15 mph over the eastern tropical
* Formation chance through 48 hours...high...90 percent.
* Formation chance through 5 days...high...90 percent.
3. A well-defined low pressure area associated with the remnants of
Peter located about 400 miles east-northeast of Bermuda is producing
gale-force winds. The associated showers and thunderstorms have
become less organized during the past few hours, and the chances of
this system becoming a short lived tropical depression or storm
appear to be decreasing. This system is expected to move
northeastward at about 10 mph into a region of very strong
upper-level winds on Wednesday. Additional information on this
system can be found in High Seas Forecasts issued by the National
* Formation chance through 48 hours...medium...40 percent.
* Formation chance through 5 days...medium...40 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