What's urgent about the weather warning symbol!

Meteorological warning signals are divided into typhoon, rainstorm, cold wave and high temperature. The specific series and corresponding meanings are as follows for your reference:

Typhoon warning signal (level 5)

Level 1 white: tropical cyclones may affect the local area within 48 hours.

Secondary green: tropical cyclones may or have affected the local area within 24 hours, and the average wind power can reach 6~7.

Yellow level 3: tropical cyclones may or have affected the local area within 12 hours, and the average wind power can reach more than 8.

Red level 4: tropical cyclone 12 hours may or has affected the local area, and the average wind power can reach more than 10.

Grade 5 black: within 12 hours, tropical cyclones may or have affected the local area, and the average wind force is above 12.

Rainstorm warning signal (level 3)

Huang Xian: Within 6 hours, there was heavy rain in the local area.

Red 2: In the past three hours, the rainfall in some areas has reached more than 50 mm, and the rainfall may continue.

Black 3: In the past 3 hours, the rainfall in some areas reached 100 mm or more, and the rainfall may continue.

Cold warning signal (level 4)

First-class green: affected by the invasion of cold air, the local temperature will drop by more than 10℃ in the next 24 hours.

Secondary yellow: affected by the invasion of cold air, the local minimum temperature will or has dropped below 5℃ within 24 hours.

Red Ⅲ: Affected by the invasion of cold air, the local minimum temperature will or has dropped below 0℃ within 24 hours.

Grade 4 black: due to the invasion of cold air, the local minimum temperature will or has dropped below -5℃ within 24 hours.

High temperature warning signal (level 2)

First yellow: the local maximum temperature will or has risen above 35℃ within 24 hours.

Secondary red: the local maximum temperature will or has risen above 38℃ within 24 hours.