The rainstorm warning is divided into several grades. How to distinguish rainstorm grades?
On the mainland, the red rainstorm warning signal is the highest level; There are three grades in Hong Kong, and the black rainstorm warning signal is the highest grade, indicating that the rainfall in some areas in the past three hours has reached 100 mm or more, and the rain may continue.
First, the blue warning standard
/kloc-within 0/2 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue.
National defense guide
1. The government and relevant departments should prepare for the rainstorm according to their duties.
2. Schools and kindergartens should take appropriate measures to ensure the safety of students and children.
3. Drivers should pay attention to road water and traffic jams to ensure safety.
4, check the city, farmland, fish pond drainage system, drainage preparation.
Second, the yellow warning standard
The rainfall will reach more than 50 mm within 6 hours, or it has reached more than 50 mm and the rainfall may continue.
National defense guide
1. The government and relevant departments should do a good job in rainstorm prevention according to their duties.
2. The traffic management department shall take traffic control measures in heavy rainfall sections according to the road conditions, and implement traffic guidance in the waterlogged sections.
3. Cut off the dangerous outdoor power supply in low-lying areas, suspend outdoor work in open-air places, and transfer people in dangerous areas and residents of dangerous houses to safe places for shelter from the rain.
4, check the city, farmland, fish pond drainage system, take the necessary drainage measures.
Third, the orange warning standard
The rainfall will reach more than 50 mm within 3 hours, or it has reached more than 50 mm and the rainfall may continue.
National defense guide
1. The government and relevant departments should do a good job in emergency work against rainstorm according to their duties.
2. Cut off dangerous outdoor power supply and suspend outdoor work.
3. Units in dangerous areas should suspend classes or business, and take special measures to protect the safety of students, children and other staff who have arrived at school.
4, do a good job in urban and farmland drainage, pay attention to prevent possible disasters such as flash floods, landslides and mudslides.
Fourth, the red warning standard
Within 3 hours, the rainfall will reach 100 mm or above, or it has reached 100 mm and the rainfall may continue.
National defense guide
1. The government and relevant departments should do a good job in emergency rescue of rainstorm according to their duties.
2. Stop assembly, suspend classes and suspend business (except for special industries).
3, do a good job in mountain torrents, landslides, mudslides and other disasters prevention and rescue work.
Extended data
protective measure
Preparation before rainstorm
1, make rounds. If it is a dilapidated house or in a low-lying place, it should be moved in time.
2. Suspend outdoor activities, and the school can suspend classes temporarily.
3, check whether the circuit, fire control and other facilities are safe, and turn off the main power switch.
4. Cover the items that are aired in the open air in advance, and put the valuables at home on the stalls or high places.
5, suspend field work, outdoor personnel should immediately to the heights or caves.
Emergency point
1. To prevent small-scale waterlogging in residents' houses, water deflector, sandbag or mound can be placed at the door according to local conditions, and people in dangerous houses or low-lying houses can be moved to safety in time.
2. Turn off the gas valve and the main power switch.
3. When the outdoor water overflows into the room, cut off the power immediately to prevent the water from being charged and hurting people.
4, immediately stop the field farming activities and outdoor activities.
5. When walking in outdoor stagnant water, pay attention to observation and walk near buildings to prevent falling into inspection wells and pits.
6. Pay attention to the rainstorm at night to prevent the old house from collapsing and hurting people.
7. Don't ride a bike when it rains heavily. Pay attention to observation when walking in stagnant water. Prevent falling into manholes or pits or holes.
8. When the driver encounters too deep water on the road or under the overpass, he should try to bypass it to avoid forced passage.
References:
Baidu encyclopedia-rainstorm