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What does the blue warning of lightning mean?

Lightning blue warning refers to lightning activities and lightning disasters that may occur in the next 3 hours.

Blue is the lowest level warning, and red is the highest level warning. China Meteorological Bureau announced the trial measures for the release of early warning signals for sudden meteorological disasters. The "Measures" stipulate that whenever sudden disastrous weather such as typhoon, rainstorm and high temperature comes, the public can see new warning signals from TV, radio, internet, mobile phone short messages and electronic display boards located in prominent positions in cities.

Blue warning signals include frost blue warning signal, gale blue warning signal, cold wave blue warning signal, blizzard blue warning signal, rainstorm blue warning signal, typhoon blue warning signal, flood blue warning signal, low temperature cold wave blue warning signal and thunderstorm blue warning signal.