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 Monday, 16 December 2019 for the period ending 1pm Wednesday.
At 6am, low, 978mb, just west of the Outer Hebrides, expected to be 991mb Sea Area Fair Isle, by midday Tuesday. Further low, 995mb, Sea Area FitzRoy, expected to move east and fill by same time.
Forecast from 1pm Monday to 1pm Tuesday.
Wind: South to southeast 3 to 4, perhaps locally 5 in the north at first, backing east to northeast 2 to 4 this evening, then northerly 3 to 5 overnight, perhaps locally 6 for a time, backing west to northwest 2 to 4 later.
Sea state: Smooth to slight.
Weather: Isolated showers in the far northwest. Rain spreading north this afternoon, persistent with mist overnight.
Visibility: Good becoming moderate, occasionally poor.
Swell: 6 to 10 feet, decreasing 4 to 7 overnight.
Outlook from 1pm Tuesday to 1pm Wednesday.
Wind: Westerly 2 to 4, backing southwest 4 to 5 by evening, locally 6, backing southerly overnight, then south to southeast 5 to 7 later, perhaps gale 8 mid- Channel.
Sea state: Smooth or slight, increasing slight to moderate overnight, occasionally rather rough in the northwest later, with a low swell.
Weather: Occasional rain with mist patches clearing eastwards, occasional showers following.
Visibility: Moderate to poor, becoming good occasionally moderate.