Warning: intensely active electrical storms in the morning, storms gradually improving in the afternoon.Showers will be frequent and heavy.In the evening, low cloud developing into fog. Possibility of showers NNE force 3 in the morning turning NNW in the evening. Gusts reaching 17 knots in the middle of the day. Moderate sea. Low, short swell from N. Visibility reduced by fog becoming excellent in the middle of the day then reduced by fog.