Up to 1.64 Meters in Flensburg: First Baltic Sea Storm Surge of the Season Hits the North

TVS News AI, editorially supervised, presents Up to 1.64 Meters in Flensburg: First Baltic Sea Storm Surge of the Season Hits the North.

Up to 1.64 meters above mean sea level, sandbags along the fjord, and a warning for the entire Baltic coast: The Federal Maritime and Hydrographic Agency (BSH) has issued the first storm surge warning of the autumn season for the night from Saturday to Sunday. Along the German Baltic coast – from Schleswig-Holstein to Mecklenburg-Vorpommern – municipalities are preparing for the first major high water of autumn.

What this means for you if you live on the coast or have planned an outing: locally, the water level can rise above the quay edge, temporarily making harbor facilities, waterfront promenades, or lower-lying streets inaccessible. You should avoid walks along the dike and harbor at night – wind, rain, and poor visibility are not a good combination.

What the BSH is specifically forecasting

The warning applies from Saturday evening to the entire German Baltic coast, according to the BSH. In its official forecast, the federal agency names specific values depending on the bay: in Kiel Bay, water levels of up to 1.25 meters above mean sea level are expected; in Lübeck Bay, up to 1.4 meters. Generally, the BSH expects values of up to 1.35 meters along the Baltic – in some places, the sea could spill over the quay edge.

Flensburg braces for the peak value

The situation is particularly tense in Flensburg. Forecasts there expect the highest values along the German Baltic coast: up to 1.64 meters above mean sea level. According to Stern, the city is preparing intensively and has already distributed sandbags to residents. If the storm surge reaches these levels, flooded streets near the harbor and a filling harbor basin are realistic – also because the Flensburg Fjord concentrates the water masses. According to the Consumer Protection Forum, the BSH forecast for Flensburg is around 1.08 meters; Danish authorities consider the higher values possible under certain conditions.

Storm surge meets heavy rainfall

According to weather services, heavy rain is joining the storm surge. That can further aggravate the situation: when rainwater and pushed-up Baltic Sea water simultaneously stress the sewage system and dike sluices, the risk of flooded basements in coastal neighborhoods rises. This applies especially to Lübeck and Kiel, where elevated levels are expected anyway.

What you should do now

If you are out and about on the Baltic coast or live there, three things make sense: secure basements and ground-level rooms near the harbor, unplug electrical devices at floor level, and keep your phone charged. For the night into Sunday, the rule is: check the official BSH forecast one more time rather than believing an all-clear too soon – values can still be revised upward depending on wind development.