FQDL71 DWHA 181700 weatherreport for German coast issued by marine weather service hamburg 18.08.2026, 1700 UTC: general synoptic situation: A low over central Sweden barely changes. A secondary low 996 over Belarus is moving towards Karelia while deepening. A ridge of the Azores High extends to the Alps and is weakening. A low 998 south of Iceland is moving towards Northern Ireland while weakening slightly. On Wednesday morning, a secondary low 999 Fischer will develop and move towards southern Sweden. Forecast for Tuesday Coastal areas of German North Sea: East Frisian coast: wind: southwest to south 3 to 4, shifting west, increasing 5. visibility/weather: rain or shower with poor visibility, locally thunderstorms. Elbe estuary: wind: southwest to south 3 to 4, shifting west, increasing 5. visibility/weather: rain or shower with poor visibility, locally thunderstorms. Helgoland: wind: southwest to south 3 to 4, shifting west, increasing 5. visibility/weather: rain or shower with poor visibility, locally thunderstorms. North Frisian coast: wind: southwest to south 3 to 4, shifting west, increasing 5. visibility/weather: rain or shower with poor visibility, locally thunderstorms. Elbe from Hamburg to Cuxhaven: wind: southwest to south 3, shifting west, increasing about 4. visibility/weather: rain or shower with poor visibility, locally thunderstorms. German Baltic Sea: Flensburg to Fehmarn: wind: west to southwest about 3. visibility/weather: later shower or locally thunderstorms with poor visibility. East of Fehmarn to Ruegen: wind: west to southwest about 4, decreasing about 3. visibility/weather: later shower or locally thunderstorms with poor visibility. Boddengewaesser east and east of Ruegen: wind: west 4 to 5, shifting southwest, decreasing 3. visibility/weather: later shower with moderate visibility. Windforce in Beaufort, airpressure in Hektopascal