For the area bounded by latitude 50N, the French coast between Cap de la Hague and Île de Bréhat and longitude 3W.
Issued by the Jersey Meteorological Department at 4am Saturday, 23 September 2017 for the period ending 7am Monday.
At 1 a.m. low, 971 mb, 600 miles northwest of Ireland expected to drift north, with associated fronts over southwest England edging slow east along the Channel on Sunday. High, 1024 mb, over northern France expected to drift northeast.
Forecast from 7am Saturday to 7am Sunday.
Wind: South to southeast 3 to 4, backing southeast to east for a time Saturday evening.
Sea state: Smooth or slight.
Weather: Mist patches near the French coast at first and again on Sunday.
Visibility: Good, locally moderate to poor in mist.
Swell: 2 to 5 feet increasing 3 to 6 feet overnight.
Outlook from 7am Sunday to 7am Monday.
Wind: South 2 to 4, backing southeast in the afternoon, becoming variable 1 to 3 in the evening.
Sea state: Smooth or slight with an increasing swell.
Weather: Mist patches at first. Outbreaks of rain slowly spreading from the west during the afternoon.
Visibility: Good, becoming moderate to poor in mist and rain.