Figure of tropical cyclone number, location and warning area: The figure below shows the number, location and warning area of tropical cyclones in China. The red, yellow and white lines in the figure represent the following meanings: white line: the starting number line of tropical cyclones (the area north of Chittagong between the west of longitude 180 ° and the east of longitude 105 °) yellow line: the warning line 48 hours before typhoon landing (the starting 7 positioning lines), (34 ° N, 132 ° E) - (22 ° N, 132 ° E) - (15 ° N, 125 ° E) - (15 ° N, 110 ° E) Red line: 24 hours warning line before typhoon landing, (34 ° N, 127 ° E) - (22 ° N, 127 ° E) - (15 ° N, 110 ° E)

Tropical cyclone number, location and warning area map