At 1pm, a slack area of high pressure persisted over Britain and the Channel.
Forecast from 1am Thursday to 1am Friday.
Weather: Fair or fine.
Wind: Northerly 2 to 4, and locally variable 1 or 2 north of Guernsey until morning, increasing 3 to 4 in the afternoon, occasionally 5 until evening, backing north to northwest by midnight.
Sea state: Smooth or slight.
Sea swell: 2 to 4 feet.
Sea temperature: 18
Outlook from 1am Friday to 1am Saturday.
Weather: Risk of a thundery showers, especially near the French coast.
Wind: North to northwest 3 to 4, occasionally 2 overnight, locally 5 from the afternoon, especially south of Jersey.
Visibility: Mainly good.
Sea state: Smooth or slight, with a low swell dying out by morning, locally moderate in the far south later Friday.