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Channel Islands shipping forecast

For the area bounded by latitude 50°N, the French coast between Cap de la Hague and Ile de Brehat and longitude 3°W.

Issued by the Jersey Meteorological Department at 4am Monday, 11 December 2017 for the period ending 7am Wednesday.

General Situation

At midnight, deep low, 963mb, over Biscay, expected to track northeast across southern Brittany and deepen.

Forecast from 7am Monday to 7am Tuesday.

Wind: Northeast 7 to gale 8, locally severe gale 9, backing north during the morning, decreasing 6 to 7 by evening, backing northwest 4, occasionally 5 overnight.

Sea state: Moderate to rather rough, increasing rough by mid morning, decreasing moderate by Tuesday.

Weather: Rain, locally heavy, clearing later this afternoon. Scattered showers developing overnight.

Visibility: Moderate to poor in rain, becoming good, occasionally moderate in showers.

Swell: 5 to 9 feet, becoming confused for a time with total waves 8 to 14 feet.

Outlook from 7am Tuesday to 7am Wednesday.

Wind: Northwest to west 3 to 4, occasionally 5, increasing 5 to 6 in the evening and backing southwest.

Sea state: Slight to moderate with a low swell, increasing moderate to rather rough in the evening.

Weather: Scattered showers dying out in the evening. Occasional rain overnight.

Visibility: Good, occasionally moderate to poor in rain and showers.

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