What do you mean by blue warning, yellow warning and orange warning?

Blue warning:/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.

Yellow warning: within 6 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue.

Orange warning: within 3 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue.

Red warning: within 3 hours, the rainfall will reach 100 mm or above, or it has reached 100 mm and the rainfall may continue.

Expand the role of data blue warning, yellow warning and orange warning.

There is a word difference between early warning and forecasting, but there is a big difference. Forecast is to tell people what the weather will be like in the next few days. Usually, the forecast time is long, from 24 hours to 10 days, and it may change with the evolution of weather system every day. Early warning mainly highlights the role of "warning" and has stronger action. After the warning is issued, action must be taken.

The timeliness of early warning is generally short. Sudden and disastrous weather warning signals like rainstorm, lightning and gale can only be released 30 minutes to 2 hours in advance, and the advance of hail is only 10 minute, that is, a few minutes. Typhoon, high temperature, cold and fire are affected by a wide range of weather systems, and the weather is relatively stable, which can generally reach more than 24 hours in advance.

The early warning signal consists of name, icon, meaning and defensive measures, and is divided into typhoon, rainstorm, high temperature, low temperature, fog, haze, gale, hail, lightning, drought, fire danger and geological disaster 12. Chinese and English descriptions of icons have been added and published in bilingual form for public identification.

Different levels of warning signals are represented by colors, usually blue, yellow, orange and red. The redder the color, the greater the possible disaster impact, so it is necessary to take immediate preventive measures.

Baidu Encyclopedia-Meteorological Disaster Warning Signal