Two separate storms are set to hit the Philippines and Taiwan at the weekend as the western Pacific Ocean sees its most storm-active November in more than seven decades.

It is the first time on record that more than three tropical storms have occurred at the same time in November in the region.

As the Caribbean Seas unusually warm temperatures have spawned two tropical storm systems this month, much later in the Atlantic hurricane season than normal, so too is the North Pacific Ocean and the South China Sea churning up multiple storm systems,

Six tropical storms in about 5 weeks have threatented the Philippines, putting the country on successive alerts. Note: Forecast tracks as of Nov. 14, 00:00 GMT Sources: National Institute of Informatics,

In nearly 75 years of tracking the weather in the North Pacific Ocean and the South China Sea, there have never been more than three tropical cyclones observed at once in November—until now. CNN reports the storms Yinxing,