Summer algae forecast: Warm and calm weather conditions can lead to powerful blooms of blue-green algae in the Baltic Sea

In sea areas blooms of algae in the spring consume nitrogen, while leaving phosphorus-based nutrients for the blue-green algae that appear in the summer. Warm and calm weather can lead to powerful blooms of blue-green algae.

The risk of extensive blooms of blue-green algae in Finnish sea areas still exists, as the nutrient level in the Baltic Sea continues to favour the appearance of blue-green algae.