Four separate storm systems are churning their way through the West Pacific simultaneously, a rare occurrence resulting from warmer oceans that threatens to bring more misery to the storm-weary Philippines.

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,

The Philippines issued fresh weather warnings on Tuesday as the fifth major storm in three weeks bore down on the archipelago, days after thousands were evacuated ahead of Typhoon Toraji.

The move from Beijing comes just a day after the Philippines signed two laws defining the country’s maritime zones

China is putting ever-greater pressure on the Philippines to cede its sovereign rights in the South China Sea, Secretary of National Defense Gilberto Teodoro said on Tuesday after a meeting with his Australian counterpart in Canberra.