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 10am Wednesday, 13 November 2019 for the period ending 1pm Friday.
At 6 a.m., low, 989mb, 350 miles south of Iceland, expected to be 988mb, over the south coast of Britain by Thursday morning. Associated front affecting the English Channel late this afternoon and early evening.
Forecast from 1pm Wednesday to 1pm Thursday.
Wind: West to southwest 4 to 6, backing southwest to south 5 to 7 this afternoon with gusts to 45kt, veering westerly by early evening, local variable or northerly 2 to 4 in the north of the area by midday.
Sea state: Moderate, increasing rather rough this afternoon, occasionally rough this evening and overnight, mainly in the west, becoming slight to moderate in the morning.
Weather: Scattered showers then rain from mid afternoon, persistent and heavy for a time, clearing to frequent showers mid evening, occasionally heavy with hail. Risk of thunder.
Visibility: Good, occasionally moderate to poor.
Swell: 2 to 6 feet increasing 4 to11 feet on Thursday, occasionally confused overnight with total wave heights 8 to 13 feet.
Outlook from 1pm Thursday to 1pm Friday.
Wind: Variable or northerly 2 to 4, locally west to southwest 5 to 7 south of Jersey at first , becoming mainly north to northeast by evening, increasing 5 to 7 in the north and west of the area gradually spreading east overnight.
Sea state: Slight to moderate, increasing rather rough to rough in the north and west of the area overnight, with a decreasing swell.
Weather: Frequent showers, occasionally heavy with hail and a risk of thunder, showers becoming isolated for a time Friday morning.
Visibility: Moderate to good, occasionally poor.