These regions have an ocean current to thank for that warm(ish) weather ... is converging,” David Thornalley of University College London tells Thompson. “What is common to the two periods ...

London’s weather is greatly influenced by the Gulf Stream, a warm ocean current with origins in the Caribbean. Winter ocean temperatures off England are typically in the 40s. When arctic air ...

Though hurricanes are fueled by warm waters, when they move over shallow warm ocean water, the winds can churn up colder water from the depths, which can prevent storms from intensifying more.