Post-Tropical Cyclone Erin Advisory Number  46 - NWS National Hurricane Center Miami FL       AL052025 - 500 PM AST Fri Aug 22 2025

...ERIN BECOMES POST-TROPICAL, THIS IS THE LAST ADVISORY......SWIMMING AT MANY U.S. EAST COAST BEACHES IS LIKELY TO REMAIN DANGEROUS THROUGH THE WEEKEND...

 

SUMMARY OF 500 PM AST...2100 UTC...INFORMATION

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LOCATION...40.0N 59.7W

ABOUT 605 MI...970 KM NNE OF BERMUDA

ABOUT 375 MI...605 KM SSE OF HALIFAX NOVA SCOTIA

MAXIMUM SUSTAINED WINDS...90 MPH...150 KM/H

PRESENT MOVEMENT...ENE OR 65 DEGREES AT 33 MPH...54 KM/H

MINIMUM CENTRAL PRESSURE...957 MB...28.26 INCHES

WATCHES AND WARNINGS

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There are no coastal watches or warnings in effect.

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1. Southwestern Atlantic (AL90):  Showers and thunderstorms continue to show some signs of organization in association with a trough of low pressure located about 250 miles northeast of the northern Leeward Islands.  Environmental conditions appear conducive for further development of this system, and a tropical storm is very likely to form this

weekend while it moves northwestward and then northward over the southwestern Atlantic.  Interests in Bermuda should monitor the progress of this system as watches or warnings could be required on Saturday.  For additional information, including gale warnings, please see High Seas Forecasts issued by the National Weather Service.

 

2. Central Tropical Atlantic (AL99):  Showers and thunderstorms associated with a tropical wave located about midway between Africa and the Windward Islands remain disorganized.  While there is still some chance that a short-lived tropical depression could form during the next day or so, the system is expected to move through a less conducive environment into Saturday.  The wave could reach a slightly more favorable

environment late this weekend into early next week as it approaches the Windward Islands.

* Formation chance through 48 hours...low...30 percent.

* Formation chance through 7 days...medium...40 percent.