Classification of freezing rain and snow disasters

1, precipitation level: according to the 24-hour precipitation, precipitation less than 0. 1 mm is light snow (sporadic light snow), 0. 1 to 2.4 mm is light snow, 2.5 to 4.9 mm is medium snow, 5.0 to 9.9 mm is heavy snow, 10.0 mm to/. 9 mm is heavy snow.

2. Warning signal level: The warning signal is divided into four levels: blue, yellow, orange and red, which respectively represent ordinary, heavy, serious and particularly serious.

3. Classification of freezing rain and snow disasters: According to the Emergency Plan for Freezing Rain and Snow Disasters in Zhejiang Province, freezing rain and snow disasters are divided into four grades: particularly serious freezing rain and snow disasters (Grade I), major freezing rain and snow disasters (Grade II), major freezing rain and snow disasters (Grade III) and general freezing rain and snow disasters (Grade IV).