Storm Lyly wreaks havoc in Finland as wind speeds hit record levels in Kylmäpihlaja

Last Friday, Finland experienced a historic storm, with wind speeds reaching severe levels in maritime areas. In Kylmäpihlaja, Rauma, the maximum average wind speed was recorded at 33.5 meters per second, surpassing the criteria for a storm, which is at least 33 meters per second. Named Storm Lyly, it caused extensive damage in the southern and western regions of the country.

Meteorologist Pauli Jokinen provided insights on the unusual weather event, noting it was unprecedented to record such high winds over the sea. He explained that the storm’s effects were mostly localized along the southwest and western coasts.

The storm was attributed to a strong jet stream affecting the southern parts of Finland, where significant temperature differences resulted in powerful low-pressure systems and strong winds. The warmer sea temperatures on Friday contributed to easier mixing of these winds, leading to damage.

When asked about climate change’s influence on storms, Jokinen stated that evidence of its impact on the frequency or severity of storms in Finland is not clear. However, he noted that climate change might contribute to shorter winters, making it easier for trees to fall during storms due to softer ground conditions.

Looking ahead, similar storms can be expected, but not as severe in the near future. Historical data suggest that significant storms occur in Finland approximately once every five to ten years.

The previous record for wind speed in Finland was set in 2019, measuring 32.5 meters per second. The recent winds also caused damage on land, resulting in fallen trees and power outages affecting about 67,000 customers. Thousands continued to be without power days later, as repair efforts were ongoing.