The Met Office says waves and debris could wash onto roads tonight, in what could be the first of a series of warnings.
A yellow warning about coastal overtopping runs from 9pm until 2pm on Saturday for Douglas, Laxey and Ramsey Promenades.
High tides may also bring flood risks in Douglas and Castletown.
Forecasters say further warnings are likely to be issued over the weekend.
Merchant Navy Day marked this week
Filipino festival planned for Laxey
Glen Maye requisition meeting scheduled
Viking longboat races today
Postal vote applications have to be in soon
Mum launches petition over university support
Bus services north and south face disruption later