Weather investigation report

Early warning signals are divided into eleven categories, such as typhoon, rainstorm, high temperature, cold wave, fog, thunderstorm and gale, gale, sandstorm, hail, blizzard and road icing.

Early warning signals are generally divided into four levels (IV, III, II and I). According to the severity and urgency of the disaster, the colors are blue, yellow, orange and red in turn, and they are marked in Chinese and English, representing ordinary, heavy, serious and particularly serious respectively. According to the characteristics and early warning ability of different disasters, the early warning grades and standards of different disasters are determined. When a variety of meteorological disasters occur or are expected to occur at the same time, a variety of early warning signals can be issued simultaneously according to the corresponding standards.