[Tropical] Tropical Weather Outlook and Summary

[EMWIN Server]

ABNT20 KNHC 241141
TWOAT

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
800 AM EDT Fri Sep 24 2021

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

The National Hurricane Center is issuing advisories on recently
upgraded Hurricane Sam, located about 1400 miles east-southeast of
the northern Leeward Islands.

A large area of showers and thunderstorms centered a couple
hundred miles east of Bermuda is associated with a formative surface
low interacting with an upper-level trough.  Additional tropical or
subtropical development of this system could occur through early
Saturday as it moves generally north-northwestward.  After that
time, development is not expected due to strong upper-level winds.
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...medium...40 percent.
* Formation chance through 5 days...medium...40 percent.

A gale-force, non-tropical low pressure system, the remnants of
Odette, is located a little less than 600 miles west-northwest of
the westernmost Azores.  Showers and thunderstorms remain limited
near the low, and the window of opportunity for this system to
become a subtropical or tropical cyclone is closing as strong
upper-level winds are expected to develop over the system later
today. This system will move generally south-southeastward over the
next day or two.  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...low...20 percent.
* Formation chance through 5 days...low...20 percent.

A tropical wave is expected to move off the west coast of Africa by
the end of this weekend.  Thereafter, environmental conditions are
forecast to be conducive for gradual development, and a tropical
depression could form by the middle of next week while the system
moves westward at 10 to 15 mph over the far eastern tropical
Atlantic.
* Formation chance through 48 hours...low...near 0 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

$$
Forecaster Papin
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