The intense mid-latitude storm is expected ... changes based on latitude. A map shows areas on the West Coast that will be affected by the bomb cyclone and atmospheric river weather systems.

A dangerous weather phenomenon called a bomb cyclone that occurs in mid-latitudes - between Earth's tropics and the polar regions - can bring strong and damaging winds, torrential rains ...

"You had a traditional kind of mid-latitude storm, that sort of decayed, and in its decay, the right conditions for a tropical cyclone to form occurred, and that hadn't happened to Portugal before." ...