More Flooding Possible In Japan

Just a few days after the remains of a tropical system push off to the north and east over Japan, another threat for some heavy rainfall is likely over southern Japan once again.

A developing tropical system just to the north and east of Taiwan is likely to develop by late Monday, local time, into the next tropical storm in the western Pacific Ocean. Once this becomes a tropical storm, it would be named Yutu.

Though this tropical depression is nearby Taiwan, which has seen plenty of flooding and damage from the tropical systems this year, it looks like Tropical Depression 15 will remain off to the east and not affect the island.

Tropical Depression 15 is expected to move off to the northeast and bring rainfall over parts of southern Japan through the middle of the week. Some heavy rainfall is likely over the Ryukyu Islands Monday and Tuesday before the storm moves more to the north and brings the rain over southern Honshu and Kyushu. In fact, depending on the exact track, there could be more rainfall over southern South Korea the next few days with the moisture streaming northward.

The rainfall over southern Japan has been above average for August, but much of July saw very little rain, making the past 2 months below normal despite the heavier rainfall the past few weeks. Nagasaki has seen nearly 8 inches of rain in August, but in July, only 0.42 inches fell for the city.

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More flooding rainfall is likely with this storm as it moves northward, and that flooding may even extend to near Tokyo as the storm moves close by for Thursday into Friday, though by then, winds with the system are not expected to be as strong.

Story by Senior Meteorologist Alan Reppert