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Possibility of becoming the strongest class of “typhoon” in the future South sea surface water temperature 30 ℃
This year, the course of the typhoon follows the route that is common in August even in September, but the high pressure from the Pacific is expected to gradually recede in the future. By the course often seen in autumn typhoons. The sea level in southern Honshu is a record 30 degrees Celsius, so if a typhoon occurs, it can become the strongest class, so caution is required.
Typhoon course in August even though it’s September
This year, even in September, the high pressure from the Pacific was strong and the typhoon did not advance from the east, taking the route often seen in August. Since the typhoon travels along the edge of the high pressure, this typhoon No. 10 also took a course that headed northward across the sea west of Kyushu to the vicinity of the Korean peninsula, as No. 9 last week. (Typhoon No. 10 has switched to a temperate low pressure at 3:00 am on the 8th).
Reason why typhoon No. 10 special warning was not developed (comparison table of water temperature at sea level 1 and 6)
Typhoon No. 10 was said to be the most powerful force in history and it was feared that it would approach or land, but it did not develop to that point. One of the reasons is the temperature of the sea surface water. Typhoon No. 9 which moved north into the East China Sea and Typhoon No. 8 that preceded it passed a similar course last week, causing the sea water to churn and the sea surface temperature to drop, resulting in less development than originally expected.
Maritime zone where the typhoon does not pass 30 ℃
If we look at the typhoon path this year, Typhoons 1 to 10 pass west from about 130 degrees east longitude. Southern Honshu was covered in warm air in August and the sunlight was strong, making the sea surface temperature record high. Since the typhoon has not passed since then, the sea surface water temperature is a record 30 ° C or higher (about 2 ° C higher than normal). Typhoons tend to develop when the sea surface temperature is 27 ° C or higher, but the sea surface temperature is expected to continue until the end of September.
Chance to become the strongest class in history
In the future, as the high pressure of the Pacific gradually recedes to the east, it is possible to take the direct hit course of Honshu that is often seen in September. Since the sea surface temperature is record in the South Sea, it can become the strongest class, so caution is required.
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