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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
800 AM EDT Thu Aug 21 2025
For the North Atlantic...Caribbean Sea and the Gulf of America:
Active Systems:
The National Hurricane Center is issuing advisories on Hurricane
Erin, located over the northwestern Atlantic Ocean.
1. Near the Leeward Islands in the Tropical Atlantic:
An area of showers and thunderstorms associated with a tropical
wave located a few hundred miles east of the Leeward Islands has
changed little over the past several hours. Environmental
conditions appear conducive for further development of this system,
and a tropical depression is likely to form this weekend while it
moves near or to the north of the northern Leeward Islands.
* Formation chance through 48 hours...medium..40 percent.
* Formation chance through 7 days...high...70 percent.
2. Eastern Tropical Atlantic (AL99):
Showers and thunderstorms associated with a tropical wave located
several hundred miles west-southwest of the Cabo Verde Islands show
some signs of organization. Environmental conditions appear
marginally favorable for additional development over the next day or
so while the system moves west-southwestward at around 15 mph, and
a short-lived tropical depression could form. In a couple of
days, environmental conditions are expected to become unfavorable
for further development.
* Formation chance through 48 hours...medium...40 percent.
* Formation chance through 7 days...medium...40 percent.
3. Central Atlantic:
A small area of low pressure located about 1200 miles southwest of
the Azores is producing limited showers and thunderstorms.
Upper-level winds are only marginally conducive for development
while the system moves slowly eastward over the next couple of days
* Formation chance through 48 hours...low...30 percent.
* Formation chance through 7 days...low...30 percent.
Forecaster Pasch
