The topography and geographical location of Tibet and its great altitude create peculiar climate, which also contains the main meteorological disaster of Tibet such as drought, flood, snowstorm, hailstone, high wind, thunderstorm and secondary meteorological disaster such as torrential flood, collapse, mud-rock flow and sandstorm. All of the disasters affect the aspects of agriculture, animal husbandry, ecology, transportation and travel and so on.
The extreme highest temperature in most parts of Tibet is not more than 30E with all kinds of proper soil acid, alkali and salt concentration moderate, thus crop growth well without atmosphere drought or physiological drought. Instead, the disaster of drought happened frequently during the long-term of less rain and rainless.
In spring, the amount of precipitation in Tibet is between 416 and 29419 mm especially in arid region and semiarid region, which is lack of rainfall.
In June, the amount of precipitation of Tibet is between 518 and 14818 mm. Drought is also happened in early summer because of the delayed rainy season.
Tibet is in rainy season of June and July with the amount of precipitation between 4911 and 31919 mm. But high temperature also caused the drought.
The disaster of flood is usually happened in rainy season in Southeast Tibet and Southern Tibet but few in other parts of Tibet.
The disaster of hailstone is usually happened from June to September in Tibet, which is the most serious area of China.
The Disaster of high wind is usually happened from October to April next year with lower temperature.
The disaster of Thunderstorm is frequently happened in Tibet, which could reach as many as 90 days annually in Lhasa City.
The snowstorm is basically the main meteorological disaster with widely influential and strong destruction in Northern Tibet.