What color is the meteorological warning signal of the first-class disaster?

The colors of weather forecast and early warning signals are generally divided into four levels. According to the severity and urgency of the disaster, the colors are blue, yellow, orange and red in turn, representing ordinary, heavy, serious and particularly serious respectively. The sudden meteorological disasters that issue 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. In order to effectively prevent and mitigate meteorological disasters and enhance people's awareness of disaster prevention and mitigation, the Meteorological Observatory will directly issue early warning signals of sudden meteorological disasters to the whole province through television, newspapers and radio stations according to the types and intensity of severe weather before the arrival of severe weather.