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Group 1 - Severe weather conditions, including snowfall, have caused a major power outage in Murmansk, a key port city in the Arctic region of Russia [1] - The local government reported that ice accumulation on power lines led to the collapse of several transmission towers, resulting in widespread electricity loss and subsequent failures in heating and water supply systems [1] Group 2 - The power outage also caused traffic signal lights to go out, leading to road congestion and traffic accidents [2]