A southwesterly and mostly variable flow prevails over the whole area.
For St Ives Harbour, Cornwall :
No gale warning.
We are 85% sure of the situation, because the atmosphere might not be as stable as forecast.
For the night from Thursday to Friday SSW force 3 turning WSW in the middle of the night then WNW force 2. Gusts reaching 16 knots until the middle of the night.
Slight sea. Low, short swell from W. Good visibility becoming poor in the middle of the night then poor. Daytime of Friday 18 july : Improving during the day:the sky will clear.
Skies changeable to very cloudy. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, good clear periods but cloud building.
Chance of light rain. NW force 2 in the morning temporarily force 3 in the middle of the day. Gusts reaching 11 knots. Slight sea. Low, short swell from W. Poor visibility becoming excellent in the middle of the day then poor.