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 4pm Monday, 24 July 2017 for the period ending 7pm Wednesday.
At 1 p.m. complex low, 1006mb, over Germany expected to move east with a temporary ridge building over the Channel. Fronts expected to move in from the west on Wednesday.
Forecast from 7pm Monday to 7pm Tuesday.
Wind: West to northwest 4 to 5, veering northwest to north 2 to 4 after midnight, backing westerly late morning.
Sea state: Slight, occasionally moderate until midnight.
Weather: Fair becoming cloudy Tuesday afternoon with risk of rain later.
Visibility: Good, perhaps moderate later Tuesday.
Swell: Not significant.
Outlook from 7pm Tuesday to 7pm Wednesday.
Wind: West 2 to 4, backing southwest to south overnight, increasing 3 to 5 by dawn, veering westerly by evening.
Sea state: Slight, increasing moderate in the north during Tuesday.
Weather: Outbreaks of rain by dawn with mist and the risk of fog patches, mostly clearing by Wednesday evening.
Visibility: Good becoming moderate to poor in rain, perhaps very poor at times.