The worst typhoon in Guangdong

The worst typhoon in Guangdong is Nida.

Typhoon is a frequent natural disaster in Guangdong every summer, and some typhoons have a great impact on Guangdong, causing serious losses. The following is one of the worst typhoons in Guangdong history-Typhoon Nida. Nida was a typhoon that hit Guangdong in 20 16. On August 3rd, it landed in Hongkong, China, and then moved northward and went deep into the Pearl River Delta, causing serious damage and casualties. Typhoon Nida is characterized by strong wind and heavy rainfall, which brings extreme weather such as storms and tides.

In Shenzhen, most of the losses caused by Typhoon Nida were the losses of houses and public facilities. In addition, hundreds of people were injured due to the disaster and hundreds of people were urgently transferred and resettled. Typhoon Nida affected a wide range, which not only caused direct damage and loss, but also brought serious impact on infrastructure such as transportation, electricity and communication.

This has led to long-term power outages and communication interruptions in some areas. In addition, because it is the summer vacation, many tourists stay in tourist attractions, which also has a great impact on tourism. Generally speaking, Typhoon Nida was a serious natural disaster in Guangdong history, which brought great losses and impacts to local residents and economy.

Formation of typhoon:

Typhoons are all developed from the pre-existing tropical depression disturbance. According to China's statistics, the tropical cyclones in the western Pacific-South China Sea region come from four initial disturbances in intertropical convergence zone, accounting for 80% ~ 85%; East wind wave, accounting for about10%; The cut-off low pressure in the long wave trough at middle and high latitudes, or the cold vortex at high altitude, accounts for about 5%; Baroclinic disturbance accounts for less than 5%.

The temperature and humidity of the upper and lower atmosphere in tropical oceans are mainly determined by the sea surface water temperature. The higher the SST, the higher the temperature and humidity of the lower atmosphere, and the more obvious the potential instability. Typhoons are formed on the warm ocean surface with SST ≥ 26 ~ 27℃. Generally speaking, the global tropical ocean surface meets this condition all year round, and only the SST in the equatorial southeast Pacific Ocean is ≤ 26.5℃ all year round, which is the main reason why there are no typhoons here.