What is the blue warning of strong convection?

Strong convective weather is frequent in all parts of China, especially in the southern region, where thunderstorms, hail, strong winds and other kinds of strong convective weather are extremely active. In this regard, many areas have issued warnings about strong convective weather in the past two days. So, what is the strong convective weather warning? How many levels are there for severe convective weather warning?

Because there are many weather conditions in strong convective weather, the coverage of early warning is also very wide. As far as our common warning signals of thunderstorm and gale weather are concerned, the warning signals of severe convective weather can be divided into four types, namely blue, yellow, orange and red. The lowest level is blue and the highest level is red.

The first is the blue warning of thunderstorms and strong winds. The warning indicates that there will be thunderstorm and windy weather in the next six hours, with an average wind force of more than 6 and a gust of 7, accompanied by such lightning weather. Of course, it is likely that the average wind force is 6 to 7, and the gust weather with lightning is 7 to 8.

After the early warning is issued, people should do a good job in lightning protection and wind protection, listen to relevant news in time, and reinforce unstable buildings such as doors and windows. In case it is lost.

Followed by the yellow warning of thunderstorms and strong winds. The early warning shows that in the next six hours, due to the thunderstorm and gale weather, the average wind force will be 8-9, and the gust will be 9- 10 accompanied by strong lightning weather, and it will continue.

After the early warning is issued, lightning protection measures should be taken in time, and the power supply should be cut off in time for aggravated appliances. Minimize going out. If you have to go out, stay away from telephone poles and trees. Stop outdoor activities, and workers working at high altitude and in water should stop leaving the workplace in time; Ships must return to Hong Kong in time to take shelter from the wind, because big waves will carry them away.

Followed by an orange warning for thunderstorms and strong winds. The release of this early warning shows that in the next two hours, due to the thunderstorm and gale weather, the average wind force will reach10-1,and the gust will reach11-and will continue.

The weather may have been very bad after the warning was issued. Ships that have not returned to Hong Kong must return to Hong Kong. If there is any situation, they should contact the rescuers in time. It is best not to go out for activities. The power supply at home should be cut off in time, and it is forbidden to touch anything with power supply. Relevant departments should take corresponding emergency measures.

Finally, the thunderstorm gale red warning. The release of this early warning shows that the average wind force will reach 12 or more in the next two hours due to the thunderstorm and gale weather, accompanied by strong lightning weather, and it will continue.

After the early warning is issued, relevant departments and units should make emergency preparations, and if some disasters have occurred, they should rescue them in time.

The above warning signals of thunderstorm and gale are only one kind of severe convective weather. There are separate warning signals for gale, thunderstorm and rainstorm, but if these weather occur at the same time, the warning signals of severe convective weather are mainly issued.