00:00Okinawa's rainy season started way too early.
00:02And now South Korea could be next.
00:05Japan officially announced rain season began on May 3rd.
00:08That is almost three weeks earlier than last year.
00:11So what is causing this sudden change?
00:13The North Pacific high-pressure system expanded unusually fast.
00:18At the same time, ocean temperatures became hotter than normal.
00:22Warmer seas created more moisture in the atmosphere.
00:25That helped the rainy front form much earlier.
00:28Even the jet stream shifted north.
00:30Pushing warm and humid air straight toward Japan.
00:34Now experts are watching South Korea closely.
00:37Usually, Korea gets its rainy season about a month later.
00:40But this year could be different.
00:43Meteorologists say rainfall may increase very soon,
00:46even before the official rainy season begins.
00:49This could mean heavier rain and unstable weather ahead.
00:53Okinawa may just be the beginning.
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