Hundreds of Atlantic salmon and sea trout have died in the Gaula River in Midtre Gauldal, Trøndelag. Researchers suspect a severe outbreak of egg-spore water mold (Saprolegnia) and are investigating the scale and causes.

About 3.5 million liters of livestock-based biomanure leaked from Havila Biogass in Molde, spreading from a marsh into waterways and a small-boat harbor, causing fish and crab deaths. Norway’s Coastal Administration called it one of the largest such spills they’ve encountered and will order cleanup; the company is conducting remediation and investigating a failed pipe gasket as the likely cause.

Sea surface temperatures off Norway have reached 22–23 °C, at least five degrees above normal, marking a marine heatwave that risks stressing marine life and intensifying extreme weather.

The central Norwegian region of Trøndelag is known for its inclement weather; per an ongoing tourism campaign, while “the food is iconic,” the weather is “chronic.” But the past week in Trondheim has been special even by local standards, and not in a good way. The city, according to Norwegian media, has to reach back more than a century to find a wetter five-day stretch than the one it just experienced, with 4.5 inches of precipitation.

Extreme weather event Gyda already set 20 new January precipitation records in Norway. Vinjeøra in Trøndelag was closed due to extreme damage. NRK reporter Arne Kristian Gansmo compares the asphalt with "an accordion".

Several roads have been closed as a result of landslides and flooding.

In the pictures, Måøya looks like a pristine natural gem on the coast of Trøndelag. But when scientists and adolescents started digging into the soil, they got shock.

A new heat record for January. Sunndalsøra in Nordmøre measured 19 plus degrees in the morning.