At 18:00UTC high, 1036mb, northwest France, expected 1040mb Bay of Biscay by midday Friday. Cold front expected to cross the Channel southwards Thursday afternoon and evening.
Forecast from 00:00UTC Thursday to 00:00UTC Friday.
Weather: Areas of haze. Patchy rain and drizzle spreading in from the north in the afternoon, with mist and a risk of fog patches, all clearing southwards in the evening.
Wind: Southwesterly 4 to 5, perhaps occasionally 6 mid-Channel, veering westerly by dawn, then northwesterly 3 to 4 by evening, then northeasterly 2 to 3 later.
Visibility: Moderate or good, becoming poor or very poor for a time later.
Sea state: Smooth to slight with a low swell, increasing slight to moderate for a time between dawn and dusk.
Sea temperature: 9.0°C
Outlook from 00:00UTC Friday to 00:00UTC Saturday.
Weather: Mist and fog patches developing near French coast, then spreading as far as Jersey by dawn, likely clearing by midday.
Wind: Northeasterly 2 to 3, becoming variable 1 to 2 by dawn, then westerly 2 to 4 by midday, increasing 3 to 5 later.
Visibility: Moderate or good, locally poor or very poor for a time.
Sea state: Smooth to slight with a low swell, increasing slight to moderate in the evening.