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Table 2 National standards for tropical cyclones in China

From: Strategy for assessment of disaster risk using typhoon hazards modeling based on chlorophyll-a content of seawater

Grade of tropical cyclones The maximum average wind speed near the center of the bottom (m × s−1) The maximum wind near the center of the bottom (level)
Tropical depression 10.8~ 17.1 6~ 7
Tropical storm 17.2~ 24.4 8~ 9
Severe tropical storm 24.5~ 32.6 10~ 11
Typhoon 32.7~ 41.4 12~ 13
Severe typhoon 41.5~ 50.9 14~ 15
Super typhoon ≥51.0 16 or above
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