What are the natural disasters in Hainan?

There are many kinds of climate disasters in Hainan, which occur frequently. The main disasters are tropical cyclone, rainstorm, drought, cold dew wind, sunny wind, low temperature and rainy weather, hail and tornado. Tropical cyclones are the main natural disasters affecting Hainan Island, with an average of 7.4 disasters per year. It may occur all year round, mainly in May ~ 1 65438+10 (accounting for 98% of the total impact), with the peak period from August to September, with an average impact of 1.7 ~ 1.8, followed by July and June, with an average impact of/. Under the control of any weather system, heavy rain may occur all year round. Rainstorms are divided into typhoons and non-typhoons. Generally, the total rainfall on a rainstorm day accounts for 20% of the local annual rainfall. The maximum number of rainstorm days over the years is generally 10 ~ 19 days, and the annual rainstorm amount is 1055 ~ 2 124 mm, accounting for 40 ~ 64% of the annual rainfall. /kloc-the total daily rainfall of rainstorm in October/October accounts for 48 ~ 68% of the monthly rainfall, which is the most in each month. The range of rainstorm is mainly local rainstorm, accounting for 84%. Large-scale rainstorm is basically typhoon rainstorm, accounting for 85%. Rainstorms all over the island are typhoon rainstorms. The dry season in Hainan Province lasts from 5 to 6 months a year (generally from 165438+ 10 to April of that year), and the precipitation during this period only accounts for 1 1% ~ 27% of the annual precipitation. There are frequent droughts in winter and spring, especially in the southwest coast, which is a prominent area of historical drought. Due to the large variability of precipitation in summer and autumn, uneven spatial distribution, and drought will also occur in years and regions with less precipitation, so drought is the most disastrous weather that can occur all year round in Hainan Province. Cold dew wind is a chilling injury caused by cold dew wind (from late September to mid-June, 10), which mainly occurs in the central mountainous areas and northwest regions. Qingming wind is a kind of chilling injury that early rice may encounter during heading and flowering, and it is unique to Hainan Island. The season in Hainan Island is early. Before and after the Qi Dynasty in Tomb-Sweeping Day, people can enter booting stage and heading stage successively. Due to chilling injury, the rate of no solid grain and empty grain increased and the yield decreased. Low temperature and rainy weather (including dry and cold weather) occurred from February to February and March of the following year, which affected the safe overwintering of early rice and rubber or the normal germination in early spring.