A northerly and very variable flow prevails over the East of the basin. Over the West, it is southerly, strong and very variable.
For Sylt, List :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
In the evening, good clear periods but cloud building.
No precipitation. ESE wind force 4. Gusts reaching 20 knots in the evening. Smooth to slight sea. Low, fairly long swell from WNW. Excellent visibility.