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Saffir-Simpson Hurricane Scale
Wind speed is based on 1-minute-sustained winds


Category Intensity    m/s       kph       knots    Storm surge Central Pressure Example
1 weak 35-45 119-153 65-83 1,2-1,5 m > 980 hPa Allison (1995), Danny (1997)
2 moderate 46-51 154-177 84-95 1,6-2,4 m 965-980 hPa Bonnie (North Carolina 1998), Georges (Florida Keys, Golfküste 1998)
3 strong 52-61 178-209 96-113 2,5-3,7 m 945-964 hPa Roxanne (Yucatan 1995), Fran (North Carolina 1996)
4 very strong 62-72 210-249 114-134 3,8-5,5 m 920-944 hPa Luis (Leeward Islands 1995), Felix (1995), Opal (1995)
5 devastating > 72 > 249 > 134 > 5,5 m < 920 hPa Mitch (Karibik 1998), Gilbert (1998)



Costliest U.S. mainland tropical cyclones (adjustet for inflation 2017)
Data source: National Hurricane Center, https://www.nhc.noaa.gov/news/UpdatedCostliest.pdf


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