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 Wednesday, 17 October 2018 for the period ending 7am Friday.
At 1 a.m., low, 971mb, 50 miles northeast of Iceland expected to move northeast. Associated occluded front slow moving to the north and west of the Channel Islands expected to weaken this evening.
Forecast from 7am Wednesday to 7am Thursday.
Wind: Southwest to south 1 to 3, becoming variable this afternoon, becoming northeasterly 3 to 4 this evening, increasing 4 to 5 overnight, perhaps locally 6 in the north and west of the area by morning.
Sea state: Smooth or slight, becoming slight to moderate overnight.
Weather: Risk of mist or fog patches near the French coasts early morning. Occasional rain or drizzle in the north and west of the area, returning westwards this evening then isolated showers developing.
Visibility: Good, occasionally moderate to poor, perhaps locally very poor at first.
Swell: 2 to 5 feet, increasing 3 to 7 feet.
Outlook from 7am Thursday to 7am Friday.
Wind: Northeast 4 to 5, perhaps locally 6 in the north of the area early morning, decreasing 2 to 4 in the evening.
Sea state: Slight to moderate, locally moderate to rather rough in the northwest of area until evening, with a low swell.
Weather: Isolated showers, dying out by evening.
Visibility: Good, occasionally moderate to poor in showers.