Regarding the rainfall in the past 24 hours, the Hydrometeorological Forecasting Department said that Hanoi city has scattered rain and showers. Rainfall from 7am on July 20 to 7am on July 21 was generally below 10mm.
Due to the influence of the circulation of storm No. 3, from this afternoon (July 21) to the morning of July 23, Hanoi will have moderate rain, heavy rain to very heavy rain and thunderstorms, with common rainfall from 80 - 200mm, some places over 250mm.
During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind. Warning of heavy rain in a short period of time (>100mm/3 hours).
From the afternoon of July 23 to July 25, Hanoi will have moderate rain, heavy rain, some places with very heavy rain and thunderstorms. Rainfall is generally from 50 - 100mm, in some places over 150mm.
Warning level of natural disaster risk due to heavy rain: Level 1.

The Hydro-Meteorological Forecasting Department warns of the risk of landslides, especially in areas with steep terrain.
Heavy rain can be accompanied by thunderstorms, tornadoes, lightning and strong gusts of wind that break trees, damage houses, traffic works and infrastructure.
Causing crop rain, making the soil saturated with water, or causing fallen trees to harm the crop.
Overloading urban drainage systems, causing flooding in residential areas, traffic congestion due to flooding and reducing visibility when driving, causing slippery traffic and accidents.