The amount of water vapor inflow is equivalent to heavy rain in western Japan Expert "Warning for a while" July 14 5:32
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Experts have estimated that the record heavy rains of Kumamoto Prefecture and other areas on the 4th of this month caused the amount of water vapor flowing toward Kyushu to be comparable to the heavy rains in western Japan. Experts have pointed out that "we need to be alert for heavy rain for a while" because the front line has been stagnation near Japan for the whole of this week and the inflow of water vapor is continuing.
Professor Kazuhisa Tsuboki of Nagoya University, who is familiar with the mechanism of meteorology, estimated how much water vapor flowed toward the stagnation front based on the data of the Japan Meteorological Agency.
As a result, on the 4th of this month when a record heavy rain in Kumamoto Prefecture occurred, the amount of water vapor flowing from the Indian Ocean and the South China Sea reached 500,000 to 600,000 tons per second, which is expected to be comparable to the heavy rain in western Japan. I understand that it can be done.
It has been pointed out that the situation in which a large amount of steam flows in has not changed since then, and that heavy rain continues to occur near the front.
Regarding the reason why the front has stagnated for a long time near Japan, Professor Tsubogi said that the updraft in the sea area around the Philippines is weaker than usual and the power of the "Pacific High" that pushes the Baiu front to the north does not strengthen. I am.
The front line is stagnation near Japan all week
Professor Tsuboki said, “There is no factor that the Pacific high pressure will be intensifying throughout the week, and there is a possibility that the front will stagnate. A large amount of steam continues to flow in and it is easy to cause heavy rain, so be cautious for a while longer That's it."