How long will it rain in Henan 202 1

Every summer, some areas will encounter bad weather, and heavy rains and floods are common. Recently, Henan Province, China suffered a torrential rain, which flooded many areas and caused floods in many places. It is expected that the rainstorm will last until the 22nd, so we must pay attention to protection.

How long will it rain in Henan? It is expected to end on August 22nd.

The rain in Henan will last until the 22nd. Heavy rainfall is mainly concentrated in the night of 19 to the 20th. There is heavy rain, local heavy rain or heavy rain in central and western Henan.

This round of precipitation lasts for a long time and has great intensity. All localities should focus on preventing geological disasters caused by floods, mountain torrents and continuous heavy rainfall in Haihe River basin, Yellow River basin, Funiu Mountain area and Taihang Mountain area, and do a good job in reservoir flood control, urban waterlogging and farmland waterlogging prevention and control. According to the specific forecast, on the 20th, there will be moderate to moderate rain and thunderstorms in the whole province, heavy rain in parts of central, western and northern areas, local heavy rain or heavy rain, accompanied by strong convective weather such as short-term heavy precipitation and short-term gale. On 2 1 day, there were showers and thunderstorms in the whole province, including moderate to heavy rain in the central, western and northern regions, local heavy rain accompanied by strong convective weather such as short-term heavy rain and short-term strong wind; On the 22nd, it was cloudy to the west of Beijing-Guangzhou line, and there were showers and thunderstorms in other areas. According to the weather process, the provincial meteorological department started a three-level emergency response, satellites and radars started 24-hour continuous encrypted monitoring, and issued 402 early warnings.

Why does it rain heavily in Henan? First, the atmospheric circulation situation is stable. The western Pacific subtropical high and continental high are maintained in the Sea of Japan and the northwest respectively, which leads to the stagnation of low-value weather systems in the two places and the long-term precipitation in the central and western parts of Henan.

Second, rich water vapor conditions. In mid-July, Henan was on the edge of subtropical high, with unstable convection and sufficient energy. On June 5438+08, a typhoon "fireworks" occurred in the western Pacific Ocean and approached China. Guided by the easterly airflow around the typhoon and the south side of the subtropical high, a large amount of water vapor is transported to the inland areas of China, which provides a rich source of water vapor for the rainstorm in Henan Province and has high precipitation efficiency.

Third, topographic precipitation has a significant impact. Influenced by the deep easterly jet and low vortex shear weather system, and the special topography of Taihang Mountain and Funiu Mountain in Henan Province, the easterly airflow rises and converges. The heavy rainfall areas in the mountainous areas of western Henan and northwestern Henan are stable and do not move much, and the precipitation before the windward slope increases obviously.

Fourth, the convection "train effect" is obvious. Under the stable weather situation, the mesoscale convection in front of Funiu Mountain develops repeatedly and moves to Zhengzhou, forming a "train effect", which leads to a large precipitation intensity, long maintenance time and extremely strong local precipitation.

How to deal with the rainstorm 1 Prepare enough fast food or cooked food for a few days, and prepare enough drinking water and daily necessities.

2. Tie rafts and bamboo rafts and collect floating objects such as wooden pots, wood and large pieces of foam plastic.

3. After waterproof binding, valuables that are inconvenient to carry can be buried underground or placed in high places. Small valuables such as tickets and jewelry can be sewn into clothes and carried around.

4. Keep the communication equipment in use.

5. When the flood comes, people who can't move quickly should move to nearby hillsides, highlands, buildings, flood control tunnels, etc. , or immediately climb the roof, tall buildings, trees, high walls and other places for temporary refuge.

6. If the flood continues to rise, it will be difficult to get temporary shelter protection. We should make full use of the prepared life-saving equipment to escape, or quickly find some floating objects such as doors, tables and chairs, wooden beds and large foam plastics to escape into the life raft.

7. If you are trapped by the flood, you should get in touch with the flood control department of the local government as soon as possible, report your position and danger, and actively seek rescue.