What does yellow alert mean?

Yellow warning is a three-level warning. Yellow warning represents eleven types of disasters such as heavier typhoons, heavy rains, cold waves, heavy fog, thunderstorms, gales, sandstorms, hail, snowstorms, ice on roads, etc. .

Early warning signals are generally divided into four levels (levels IV, III, II, and I). According to the severity and urgency of the disaster, the colors are blue, yellow, orange, and red.

The cold wave blue warning signal indicates: within 48 hours, the minimum temperature will drop by more than 8℃, the minimum temperature is less than or equal to 4℃, and the average wind force on land can reach more than level 5; or it has dropped by more than 8℃, and the minimum temperature has dropped by more than 8℃. The temperature is less than or equal to 4℃, and the average wind speed reaches level 5 or above, and may continue.

The orange warning signal indicates: within 24 hours, the minimum temperature will drop by more than 12℃, the minimum temperature is less than or equal to 0℃, and the average wind speed on land can reach level 6 or above; or it has dropped by more than 12℃, and the minimum temperature is less than or equal to 0℃. 0℃, the average wind speed reaches level 6 or above, and may continue.

The red warning signal means: within 24 hours, the minimum temperature will drop by more than 16℃, the minimum temperature is less than or equal to 0℃, and the average wind speed on land can reach level 6 or above; or it has dropped by more than 16℃, and the minimum temperature is less than or equal to 0℃. 0℃, the average wind speed reaches level 6 or above, and may continue.