What do blue warning and orange warning mean respectively?

Blue is the lowest level warning, and red is the highest level warning. China Meteorological Bureau announced the trial measures for the release of early warning signals for sudden meteorological disasters. The "Measures" stipulate that whenever sudden disastrous weather such as typhoon, rainstorm and high temperature comes, the public can see new warning signals from TV, radio, internet, mobile phone short messages and electronic display boards located in prominent positions in cities.

The orange warning signal is a meteorological disaster warning signal. The meaning of the orange warning signal: it may be affected by tropical cyclones within 12 hours, and the average wind force may reach 10 or above, or the gust 1 1 above; Or have been affected by tropical cyclones, the average wind force 10- 1 1, or the gust112 may continue.

Extended data

Warning level of heavy air pollution

1, yellow warning: forecast the daily average value of the city's air quality index >; 200 will last for more than 2 days (48 hours), and serious pollution will occur in a short time, which does not meet the high-level early warning conditions.

2. Orange warning: It is predicted that the daily average air quality index > 200 in the whole city will last for 3 days (72 hours) or more, which does not meet the high-level warning conditions.

3. Red warning: it is predicted that the daily average value of the city's air quality index > 200 will last for 4 days (96 hours) or more, and the daily average value is predicted >; 300 will last for more than 2 days (48 hours); Or predict that the daily average of the city's air quality index will reach 500.

Baidu Encyclopedia-Blue Warning

Baidu Encyclopedia-Orange Warning