Affected by the peripheral circulation of Du, the cloud system in Shanghai increased and the wind force increased. There will be a strong wind of 8-9 from south to east along the coast of Shanghai from tomorrow afternoon. Showers or thunderstorms can also occur. Judging from the current forecast, the rain will be more obvious tomorrow and the day after tomorrow, and it will be cloudy and sunny on weekends.
Today, the sky in Shanghai is still cloudy with scattered showers or thunderstorms. According to statistics, from 8: 00 to 16, the rainfall in five towns exceeded 25.0 mm, and 7.0% of the towns exceeded 10.0 mm, among which Zhou Pu Town in Pudong had the largest rainfall of 47.0 mm, and the maximum rainfall of 1 hour appeared in Zhou Pu Town in Pudong, with 46.5 mm (65,433). The temperature is not much different from yesterday, and the highest temperature in most areas stops at 3 1~33 degrees. Because the wind is small and the humidity is high, the body feels sultry.
Classification of typhoons:
1, tropical depression (short for tropical depression) is a kind of tropical cyclone. It belongs to the weakest level of tropical cyclones (its maximum wind force is below 62 kilometers per hour). Tropical depression is the most important origin of typhoon formation and the final destination of its disappearance.
2. Tropical storm is a kind of tropical cyclone, which refers to the tropical cyclone with the maximum wind force of 8-9 (17.2-24.4m/s) near the center. A weak tropical vortex (tropical depression) exists in advance for the formation of tropical storms, but it brings abundant fresh water to people. Tropical storms brought coastal areas of China, the Sea of Japan, Indian and Southeast Asia.
3. Strong tropical storm is a kind of tropical cyclone. The maximum average wind speed near the bottom center of severe tropical storm (STS) is 24.5 ~ 32.6m/s, the maximum wind force near the bottom center 10 ~ 1 1, and the maximum wind force near the center of tropical cyclone 10 ~ 165438. Strong tropical storms continue to strengthen and typhoons will form.
Typhoon is a kind of tropical cyclone. Meteorologically, according to the definition of the World Meteorological Organization, tropical cyclone centers with sustained winds of 12 to 13 (that is, 32.7 meters to 4 1.4 meters per second) are called typhoons or hurricanes, and the names of hurricanes are used in the Atlantic Ocean and the East Pacific Ocean. In the western part of the North Pacific (north of the equator, west of international date line, east of east longitude 100), it is synonymous with typhoon, and it is called a strong typhoon when it continues to strengthen.