(CNN) If you're on the Atlantic coast, you may want to stay out of the water for the next few days.

Hurricane Chris is weakening but moving faster at 25 mph and is expected to continue picking up speed for several days, the National Hurricane Center

The center has downgraded Chris to a Category 1 storm. Maximum sustained winds have lowered to 90 mph, and the storm was not expected to gain strength the rest of Wednesday.

Some weakening is forecast for Thursday, when Chris will probably become a strong post-tropical cyclone.

The system is expected to bring swells on the coasts of North Carolina and the mid-Atlantic states.

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