ZCZC MIATWOAT ALL
TTAA00 KNHC DDHHMM
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
Islands.
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
tropical Atlantic.
* 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
Atlantic.
* 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
Weather Service.
* 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
Forecaster Cangialosi
Original author: NHC
