Low 1012 hPa centered on the South-East of the Bay of Biscay remaining almost stationary.
For Ondarreta :
Warning strong breeze offshore.
We are 70% sure of the situation, because the high pressure system could move in more quickly than forecast.
Skies very cloudy, risk of thundery outbreaks during the afternoon. Heavy showers in late morning, showers late in the day. In the evening, warning: violent storms.
Heavy showers. WSW force 3 becoming W force 4 in the middle of the day then NW force 5. Gusts reaching 33 knots in the evening. Slight sea becoming moderate in the middle of the day. Low, fairly long swell from NW then moderate in the evening. Good visibility becoming excellent in the middle of the day.