The weather in Yan' an in August

1, the precipitation is unusually high in September, and there is a strong autumn shower of 20 1 1. In September, the strongest autumn rain weather occurred in the same period since 196 1. The duration of this process is as high as 18 days, and the average precipitation is 260.8 mm, which is 1.8 times more than normal. 2. At the beginning of July, a regional rainstorm occurred in the whole province from north to south. On July 1-3, there was an obvious precipitation weather process in the whole province from north to south, during which there were three heavy rain days, and the area fell in Yulin and the north of Yan 'an. In the early morning of July 5 to 6, there was continuous heavy precipitation in Hanzhong Ankang and other places in our province. The precipitation process was concentrated, with heavy rainfall and heavy disaster. 3. It is dry in winter, and it is extremely cold from 2065438+1October 20/kloc-0+/kloc-0 to mid-February. There is no effective precipitation in most parts of Shaanxi for more than 100 days, and the precipitation in most parts of the province is less than 50%, of which most parts of northern Shaanxi are less than 80%, and most parts of northern Shaanxi and Guanzhong suffer from drought. 20 1 1 year 1 month has frequent strong cold air activities, and the monthly average temperature is -4.5℃, which is 3.0℃ lower, making it the second lowest year since 196 1 year. 4. 165438+ 10 has more precipitation and higher temperature, which breaks through the historical extreme of 2011. 10, the average temperature in the whole province reached the highest since 196 1, and the average precipitation in the whole province reached 19665438. As a result, Guanzhong and southern Shaanxi entered the winter late. The monthly precipitation in northern Shaanxi and southern Shaanxi has exceeded the historical extreme. Fifth, there are frequent high-temperature heat waves in summer, and the highest temperature in early June of Xi 'an is refreshed by high temperature 1960. Among them, on June 7, the highest temperature in 4/kloc-0 counties in the province exceeded 35℃, the highest temperature in 7 counties exceeded 40℃, and the highest temperature in Xi 'an reached 40.3℃, which was the highest temperature in the first half of June in 60 years. 6. At the end of July and the beginning of August, the persistent rainstorm has a wide range and a long duration. From June 28th to August 1 day, there was a large-scale rainstorm in our province, mainly concentrated in southern Shaanxi, central and western Guanzhong and southern Shaanxi, which caused certain losses to people's lives and property safety and traffic. In July, 79 counties (districts) in the whole province 10 city suffered from wind, hail, rainstorm and flood, resulting in direct economic losses of 3.38+0.7 billion yuan. Seven, foggy weather in early winter, a wide range, the impact of 20111-65438+February, a large area of foggy weather in the province. At the end of August and April, there was a windy and dusty weather in our province, and sandstorms occurred in Yulin and Shenmu. Strong convective weather such as hail, thunderstorm and strong wind appeared in mid-September and July. On June1March-22, strong convective weather such as hail, gale and thunderstorm occurred in the whole province for 9 consecutive days from south to north. 1October165438+1October Thunderstorm weather in our province165438+1October * * There are five thunderstorm days, the strongest of which occurs on 28th and 29th, and it is distributed in Guanzhong and southern Shaanxi. It is rare for lightning to occur in late June of 1 1. Today is New Year's Day. According to the weather forecast, there will be cold air activity tomorrow and the day after tomorrow, but it is less likely to snow.