Temperatures in northern Europe have plummeted to below -40 degrees Celsius for the first time since 2021, the Swedish meteorological institute SMHI said on Tuesday. In some parts of northern Sweden, like the north-eastern city of Umea, temperatures dropped to the lowest level in 12 years, it said. All passenger train services running north of Umea have been suspended until Thursday due to heightened safety risks amid the cold, broadcaster SVT reported. According to the SMHI, a high pressure area is currently bringing extremely cold air to the north-east of Sweden and the north of Finland. In …