Is the typhoon a southeast wind or a northwest wind?

A the typhoon affecting China is a cyclone in the northern hemisphere, and the horizontal airflow moves counterclockwise. The southeast wind is on the east side of the cyclone, the southwest wind is on the south side, the northwest wind is on the west side and the northeast wind is on the north side. Under the influence of Typhoon Fete, the measured wind direction along Fujian coast changed from northwest wind to southeast wind, so it is correct to judge the typhoon moving path from southeast to northwest.

B the typhoon affecting China is a cyclone in the northern hemisphere, and the horizontal airflow moves counterclockwise. When Typhoon Fett affected, the wind direction measured in a coastal area of Fujian changed from northwest wind to southeast wind, so it is not consistent with the meaning of the question to judge the moving path of typhoon from southeast to northwest.

The east side of cyclone C is southeast wind, the south side is southwest wind, the west side is northwest wind and the north side is northeast wind. Under the influence of Typhoon Fete, the measured wind direction in a coastal area of Fujian changed from northwest wind to southeast wind, so it is inconsistent with the meaning of the question to judge that the moving path of typhoon is from southeast to northwest.

D southeast wind is on the east side of cyclone, southwest wind is on the south side, northwest wind is on the west side, and northeast wind is on the north side. Under the influence of Typhoon Fete, the measured wind direction in a coastal area of Fujian changed from northwest wind to southeast wind, so it is inconsistent with the meaning of the question to judge that the moving path of typhoon is from southeast to northwest.

Therefore, choose: a.

1. "Hollow" Typhoon: Many typhoons that cross the mountains in central Taiwan Province Province and enter the Taiwan Province Strait are prone to hollow structures. When landing in Fujian, it is easy to see that the north wind is less than the south wind.

2. "The air pressure is not bad": The land was originally a low-pressure area, which was friendly with the typhoon front, and the air pressure difference was small. However, after landing, the offshore high pressure belt kept up, the air pressure difference increased, and the south wind also increased.

3. "Southwest King Bombing": The typhoon itself is strong, with solid circulation structure and vigorous vitality. In particular, the boundary layer is supported by strong southwest airflow, which can replenish energy downward and make the south wind rain or shine all the way.

Therefore, there is a proverb along the coast of eastern Fujian that "the typhoon is not big, and it will only be big if it returns to the south", and there is also a proverb along the coast of Guangdong that "the typhoon is not big enough to return to Nantah".

The phenomenon of returning to the south is inextricably linked with the intensity, structure, speed and direction of the typhoon and the surrounding environment. "If you keep cutting, the reason will be chaotic." Although not every typhoon has the phenomenon of returning to the south, please be sure to let the typhoon turn for a while before going out.