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Baltic Sea: Storm surge warning for our coast - How to protect yourself!
Current information on water levels, storm surge warnings and flood protection on the Baltic Sea in Western Pomerania-Rügen on July 15, 2025.
Baltic Sea: Storm surge warning for our coast - How to protect yourself!
Today, July 15, 2025, the Baltic Sea coast is under the influence of an announced storm surge, which is causing increased water levels in both Schleswig-Holstein and Mecklenburg-Western Pomerania. Loud Baltic Sea newspaper The current water levels for important measuring stations such as Wismar, Warnemünde and Stralsund are significantly above normal values. The terms “average low water” (MNW) and “average high water” (MHW) are discussed as warnings – ideal for anyone who is familiar with tidal theory or would like to learn it.
In Warnemünde the water currently shows an average water level of 507 cm, with a MNW of 407 cm and a MHW of 617 cm. Historically, the highest high water level (HHW) is 770 cm, while the lowest water level (NNW) was only 332 cm. The last storm surge in October 2024 has already caused damage of approximately 56 million euros, underlining the vulnerability of this coastal region.
Current warnings and preparations
The storm surge is being intensified by a freshening easterly wind, which means that water levels in Schleswig-Holstein could be 1.50 meters or more above mean high water. Particular attention is paid to the Flensburg Fjord, where water levels of up to 2.00 meters above mean flood are expected. star reports on the urgent warnings from Environment Minister Tobias Goldschmidt, who calls on residents to exercise caution and prepare for possible flooding.
The responsible institutions, including federal, state and police, have activated the flood control center. Residents should secure important personal items and stock up on emergency supplies. In the event of eviction notices, carry-on luggage is recommended, and higher floors may be the safest place to retreat. Flood warnings through various channels such as radio, television and social media are intended to ensure that the population is well informed.
Historical storm surges and their classification
A look at the storm surges of recent years shows that the German Baltic Sea coast is repeatedly confronted with severe weather events. The classification into storm surge classes helps to better assess the situation: a storm surge is defined as 1.00 to 1.25 meters above the mean water level, while a very severe storm surge can even rise above 2.00 meters. BSH highlights that the 2023/2024 season has already seen several storm surges and the impact on coastal infrastructure should not be underestimated.
Preparing for storms and floods is not only a timely response to the forces of nature, but also a necessity in view of the recurring storm surges that can put a lot of strain on the region. Stay informed and take the necessary precautions to get through the coming days well!