Learn prior preparation for the typhoon season and behavior at the time of approach -IMPRESS WATCH

A typhoon is expressed in combination of size and strength.The size is expressed in a radius of a strong wind area (a strong wind with a wind speed of 15m/s or more, or a range that may blow when there is no terrain effect), and the strength is represented by the maximum wind speed.

The classes of the size are "large" and "super large", and the radius of the strong wind range is 500 km or more and less than 800 km, and the super large is 800 km or more.The class of strength is "strong", "very strong", and "furious", and the maximum wind speed is 33m/s or more or more, 44m/s, very strong, but 44m/s or more and less than 54m/s.54m/s or more.

Tenki.jp mentions three types of disasters due to typhoons: "heavy rain", "stormy tide", and "strong winds and storms".The flooding of rivers, which caused great damage to various places in the large typhoon in 2019, is a representative of the damage caused by heavy rain.

Heavy rain requires attention in the south to southeast mountains where the wind blows into a right angle, and is particularly vigilant in the area on the right side of the typhoon.The reasons for the rain clouds are more likely to develop because the warm and damp winds from the south due to the typhoon blow into the slopes in the south to southeast, which forcibly increases the air due to the terrain.

Also, when the front line stagnates in the Japanese archipelago, heavy rain may occur near the front, even if it is away from the typhoon.In the case of the front and typhoon patterns, the latest weather information is always confirmed, calling for river flooding, flooding, and landslide disasters due to heavy rain.

The bay opened south of the storm surge is the bay opened south.In the bay that has entered the land, if the typhoon goes north to the west side, the south wind will continue to blow and storm surge will occur, especially in the shallow bay that will open south.In addition, when the high tide time overlaps, the tide level increases.

Be especially careful about strong winds and storms is the right side of the typhoon.The areas of the terrain are referred to as covets, straits, cape, valley, and mountain ridge.In addition, artifacts need to pay attention to the building style of the building and the local strong winds on the bridge and at the exit of the tunnel.

Even after the typhoon passes, it is necessary to be alert to the strong wind, and as the typhoon approaches before the passing of the typhoon, it becomes a fierce south wind, and after the typhoon's eyes have passed, the opposite north.It is said that it may blow back strongly.

The damage caused by strong winds is also a power outage accident due to "Pempougai" and the death of plants.A strong wind caused by transporting salt particles from the sea, and damages may be damaged by a distance from the coastline of about 5 km, and when the range is wide, it may be more than 50 km away.