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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
200 PM EDT Sat Sep 18 2021
For the North Atlantic...Caribbean Sea and the Gulf of Mexico:
The National Hurricane Center is issuing advisories on Tropical
Storm Odette, located a few hundred miles southeast of
1. Showers and thunderstorms associated with an area of low pressure
located about 650 miles east-southeast of the northern Leeward
Islands continue to show signs of organization. However,
satellite-derived wind data from a few hours ago indicated that the
system does not yet have a well-defined surface circulation. Only
a slight increase in organization of this system would lead to the
formation of a tropical depression or tropical storm, which is
expected to occur later today or tonight while the low moves toward
the west-northwest at about 15 mph. 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
* Formation chance through 48 hours...high...90 percent.
* Formation chance through 5 days...high...90 percent.
2. A low pressure system located over the far eastern Atlantic a few
hundred miles south-southwest of the Cabo Verde Islands continues
to show some signs of organization. Environmental conditions
appear conducive for further development of this system, and a
tropical depression could form over the next couple of days 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 could
limit its development.
* Formation chance through 48 hours...medium...50 percent.
* Formation chance through 5 days...medium...50 percent.
Public Advisories on Tropical Storm Odette are issued under
WMO header WTNT35 KNHC and under AWIPS header MIATCPAT5.
Forecast/Advisories on Tropical Storm Odette are issued under
WMO header WTNT25 KNHC and under AWIPS header MIATCMAT5.
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