Based on information received from the National Weather Service in Tiyan, Guam and compiled at the CNMI Emergency Operations Center State Warning Point, combined seas will generally be 2 to 4 feet the next several days.
A developing tropical disturbance moving through the Marianas today will raise seas to between 4 and 6 feet within the northern Marianas waters through tonight. The disturbance will also bring occasional showers and isolated thunderstorms today, tapering to scattered showers tonight. The higher winds to the north of the center will require a small craft advisory for winds for the northern Marianas waters today.
A small craft advisory for winds in effect until 6pm this evening.
A developing tropical disturbance will bring fresh winds with frequent gusts to near gale strength in showers for the northern Marianas waters. The winds will subside tonight as the disturbance moves out of the marine forecast zones.
Inexperienced mariners and those operating smaller vessels should avoid sailing in these conditions. If sailing cannot be avoided be cautious near inlets and reefs. A small craft advisory for wind means that sustained wind speeds or frequent gusts of 21 to 33 knots are expected.