How many hours did the rainstorm last?

The duration of rainstorm generally varies according to the specific meteorological conditions and geographical environment.

Generally speaking, the duration of rainstorm is relatively short, usually within a few hours. The formation of rainstorm is often related to convective clouds, temperature, humidity and other meteorological factors. The formation of convective clouds is often influenced by thermal conditions, such as local heating or strong updraft, which helps the water vapor in the clouds to fully condense and form rainfall.

Once these thermal conditions become more stable or the water vapor in the clouds decreases, the rainfall will gradually weaken or stop. Because of the high rainfall intensity, large raindrops and fast falling speed, relatively more precipitation can fall in a short time. Therefore, rainstorm is characterized by concentrated rainfall and high intensity, and usually a large amount of rainfall can occur within a few minutes to a few hours.

However, it should be noted that the specific rainstorm duration will also be affected by the geographical environment. The fluctuation of topography, wind direction and ground conditions may affect the duration of heavy rain. In mountainous areas or river valleys with complex terrain, the rainstorm in some areas may last longer due to the obstruction of terrain.

Preventive measures in case of rainstorm:

1. Note for residents: Try to stay indoors and avoid going out. If you need to go out, please pay attention to the weather forecast and road information and choose a safe mode of transportation. Close the doors and windows to ensure that the room is dry. Check the roof, doors and windows, sewers and other facilities to ensure that they are intact.

2. Prevent stagnant water: Clean up stagnant water on roofs, balconies and courtyards to ensure smooth drainage. Clean sewers, drains and rainwater pipes to prevent blockage. Pay special attention to stagnant water in low-lying areas and try to avoid passing through stagnant water areas.

3. Pay attention to safe travel: avoid walking or driving through stagnant water. If you must go, choose a high place or a safe passage to avoid being flooded. When riding or driving, slow down, keep a safe distance and drive carefully.

4. Lightning protection: Avoid tall and isolated objects, such as trees and telephone poles. When you are outdoors, avoid staying outdoors. Avoid touching metal objects, such as umbrellas and bicycles.

5, pay attention to safe eating: avoid eating contaminated food or drinking water. Try to choose boiled water sources and avoid eating raw water. Reserve enough food and drinking water to be self-sufficient in emergencies such as power failure.

6. Pay attention to weather information: pay attention to weather forecast and disaster warning information in time. Obey the urgent instructions issued by the government and the arrangements and guidance of relevant departments.