FQDL70 DWHA 171100 weather and sea bulletin for north- and baltic sea issued by marine weather service hamburg 17.09.2026, 1100 UTC: general synoptic situation: A low 987 over northern Sweden moves to the Barents Sea. A trough extending to eastern Poland moves eastwards. A ridge of the Azores High 1032, extending to the Alps, hardly changes. A deep low 976 south of Iceland moves towards Haltenbank while weakening. An associated trough will swing across the North Sea on Thursday and across the Baltic Sea on Friday. Forecast Thursday: German Bight: wind: west to southwest 5 to 6. visibility/weather: locally shower with poor visibility. sea: 2,5 meter. Southwestern North Sea: wind: west to southwest 5 to 6. visibility/weather: locally thunderstorms with poor visibility. sea: at times 2,5 meter. Fischer: wind: southwest to west about 5. visibility/weather: at times shower with poor visibility. sea: western part later 3 meter. Skagerrak: wind: southwest to south about 5. visibility/weather: locally shower with poor visibility. sea: later 2 meter. Kattegat: wind: southwesterly winds about 5. visibility/weather: locally shower with poor visibility. sea: 1,5 meter. Belts and Sound: wind: southwest to south about 5. visibility/weather: locally shower with poor visibility. sea: at times 1,5 meter. Western Baltic: wind: southwest to south about 5. visibility/weather: later shower with poor visibility. sea: 1,5 meter. Southern Baltic: wind: southwest to south about 5. visibility/weather: later locally shower with poor visibility. sea: eastern part first 2 meter. Southeastern Baltic: wind: west about 5, shifting southwest later. visibility/weather: locally shower with moderate visibility. sea: increasing 2 meter. Forecast Friday: German Bight: wind: west to southwest 5 to 6, locally 7. visibility/weather: locally shower with poor visibility. sea: western part at times 3 meter. Southwestern North Sea: wind: west 5 to 6, shifting southwest, later locally 7. visibility/weather: locally shower with moderate visibility. sea: humber later 3 meter. Fischer: wind: southwest to west 5 to 6. visibility/weather: locally thunderstorms with poor visibility. sea: at times 3 meter. Skagerrak: wind: southwest 5 to 6. visibility/weather: locally shower with poor visibility. sea: increasing 2,5 meter. Kattegat: wind: southwest to west 5 to 6. visibility/weather: locally shower with poor visibility. sea: northern part later 2 meter. Belts and Sound: wind: southwest 4 to 5, locally 6. visibility/weather: locally shower with moderate visibility. sea: eastern part 1,5 meter. Western Baltic: wind: southwest to west about 5. visibility/weather: first shower with poor visibility. sea: eastern part at times 2 meter. Southern Baltic: wind: southwest to west about 5. visibility/weather: locally shower with poor visibility. sea: at times 2 meter. Southeastern Baltic: wind: southwesterly winds 5 to 6. visibility/weather: locally shower with poor visibility. sea: later 2,5 meter.