20 19 winter rainstorm in Guizhou

Ten days have passed since New Year's Day. With the help of the cold wave on New Year's Day, Guizhou finally ushered in the first winter snow. This winter, Guizhou always looks cold. This winter, Guizhou always looks a little rainy. In fact, the rainstorm in Guizhou is also affected by the south branch trough, and the winter rainfall in most parts of Guizhou has reached the extreme value.

Recent weather conditions in various parts of Guizhou

How are your friends in Guizhou? It is said that there was a heavy rain in Guizhou this winter. According to the statistics of Guizhou Meteorological Observatory, from 08: 00 to 08: 00 on October 8, 20 19/KLOC-0 in Guizhou, there was a rainstorm at 22 counties 157 stations in the province, with the maximum of 96.8 mm in Fenghe, duyun city, and it occurred in Wangmo, Ceheng, Leishan, Danzhai and Xingyi.

Rainstorms are really rare this year. There is basically no such large-scale rainfall in winter in Guizhou.

On October 9th, 65438/kloc-0, the heaviest rainstorm occurred in Guizhou, and the daily precipitation in the whole province 17 counties (cities, districts) exceeded the historical extreme.

Regarding this rainstorm, the Guizhou Provincial Meteorological Observatory explained that the rainstorm in Guizhou is mostly in summer, followed by spring and rarely in winter.

The rainstorm is mainly affected by the rich water vapor in the south branch trough.

southern branch trough

The south branch trough, also known as subtropical westerly trough, has convergent ascending motion and precipitation area in front of it and divergent descending airflow behind it. It's sunny.

South branch trough is common in winter, which can cause rainstorm, rainstorm, thunderstorm, hail, strong wind and other weather. If there is no cold air in the south branch trough, there will be showers or small to moderate rain in some areas. When the south branch trough is combined with strong cold air, it can cause cooling, rain and snow weather in the whole low latitude plateau area.

It is said to be "heavy precipitation", but in fact, from the magnitude and time of rain, it has not reached the standard of heavy precipitation. Only in recent years, in the middle of 65438+ 10, 24 small precipitation reached the level of heavy rain, which is really rare.

The cumulative precipitation in Guiyang is 28.9 mm, reaching the level of rainstorm. This heavy rainfall process is rare in winter. It is reported that since 10, the accumulated precipitation at Guiyang Dongshan Station has never reached more than 20 mm in 65438+ 10. In addition, the daily precipitation in Guiyang exceeded the total precipitation from 2009 to 20 14 and 20 17 1 month respectively.

On October 8th, 65438/kloc-0, the first heavy rainfall occurred in Guiyang this year. There is moderate rain in the city and heavy rain locally. With the cooperation of rain and low temperature, it added a bit of chill to Guiyang in late winter. After that, Guiyang will turn from light rain to cloudy in the next few days.

According to the forecast of Guizhou Meteorological Observatory, rainfall in most areas of Guizhou began to decrease today, and moderate rain and light snow in some areas may still cause secondary disasters. The Emergency Department of Guizhou Province, the Disaster Prevention Office of Guizhou Province and the Office of the Provincial Security Committee issued a notice on the 8 th, requiring all localities and departments to attach great importance to it and earnestly do a good job in preventing low-temperature rain, snow and heavy rainfall. We will do our utmost to prevent flash floods that may be induced by local heavy rainfall and transfer people in areas that may be threatened in time. At the same time, all localities should seize the opportunity of precipitation, do a good job in water storage and conservation, and reserve water sources for drought resistance in winter and spring.

The meteorological department reminded that the rain caused the road to be slippery and the traffic was affected to some extent. Please pay attention to the latest weather and road information and pay attention to traffic safety.

Today, from night to 1 1 during the day, sporadic rain in the western part of the province turned cloudy, and light rain in other areas turned cloudy;

1 1 From night to 12 During the day, it is cloudy in the western part of the province, and there is light rain in other areas from cloudy night to morning. In the next three days, it will be foggy from night to morning in the central and western regions of our province and Wanshan.