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 Friday, 19 January 2018 for the period ending 7pm Sunday.
At midday a strong westerly flow covered the Channel. New low expected to develop near Ireland tonight and move quickly southeast to cross the Channel Saturday morning.
Forecast from 7pm Friday to 7pm Saturday.
Wind: Westerly 6 to 7, backing southwest after midnight, then veering westerly 7 to gale 8 before dawn, and west to northwest late afternoon.
Sea state: Rather rough to rough, becoming rough to very rough in the morning.
Weather: Isolated rain or hail showers, dying out this evening. Occasional rain by midnight, locally heavy and persistent for a time overnight then showers after dawn.
Visibility: Good, occasionally moderate to poor in rain or showers.
Swell: Confused. Total waves 6 to 11 feet increasing 9 to 17 feet in the morning.
Outlook from 7pm Saturday to 7pm Sunday.
Wind: Northwest 6 to 7, decreasing 3 to 5 after midnight, backing southwest by dawn, veering west and increasing 5 to 7 during the morning.
Sea state: Rough to very rough, decreasing rather rough for a time overnight, then rather rough to rough.
Weather: Occasional rain or drizzle. Mist patches by Sunday morning.
Visibility: Moderate to poor, occasionally good on Saturday.