What do the blue weather warning and yellow weather warning received by mobile phones mean?

Icon/name of blue rainstorm warning signal

Blue rainstorm warning signal standard

/kloc-within 0/2 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue.

Two. Yellow rainstorm warning signal icon/name

Yellow rainstorm warning signal standard

The rainfall will reach more than 50 mm within 6 hours, or it has reached more than 50 mm and the rainfall may continue.

Three. Icon/name of orange rainstorm warning signal

Rainstorm orange warning signal standard

The rainfall will reach more than 50 mm within 3 hours, or it has reached more than 50 mm and the rainfall may continue.

Four. Icon/name of red rainstorm warning signal

Rainstorm red warning signal standard

Within 3 hours, the rainfall will reach 100 mm or above, or it has already reached 100 mm and the rainfall may continue.