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Hurricane Strength Guide

Category 1: A Minimal Hurricane Winds: 74-95 mph, 64-83 kts, 119-153 km/h Minimum surface pressure: higher than 980 mbar Storm surge: 3-5 ft, 1.0-1.7 m Category 2: A Moderate Hurricane Winds: 96-110 mph, 84-96 kts, 154-177 km/h Minimum surface pressure: 979-965 mbar Storm surge: 6-8 ft, 1.8-2.6 m Category 3: An Extensive Hurricane Winds: 111-130 mph, 97-113 kts, 178-209 km/h Minimum surface pressure: 964-945 mbar Storm surge: 9-12 ft, 2.7-3.8 m Category 4: An Extreme Hurricane Winds: 131-155 mph, 114-135 kts, 210-249 km/h Minimum surface pressure: 944-920 mbar Storm surge: 13-18 ft, 3.9-5.6 m Category 5: A Catastrophic Hurricane Winds: greater than 155 mph, 135 kts, 249 km/h Minimum surface pressure: lower than 920 mbar Storm surge: higher than 18 ft, 5.6m Source:NOAA