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Table 3

Saffir–Simpson scale for hurricane wind speeds and damage.

Category m/s knots (kn) mph km/h hPa* Damage
5 ≥ 70 ≥ 137 ≥ 157 ≥ 252 < 925 Catastrophic damage, many wooden homes will be destroyed, with total roof failure and wall collapse. Debris will block roads. Prolonged power outages.
4 58–70 113–136 130–156 209–251 926–945 Severe damage with loss of most of the roof structure and/or some exterior walls of wooden houses. Most trees will be uprooted.
3 50–58 96–112 111–129 178–208 946–960 Major damage or removal of roofs. Breaking and uprooting of many trees. Long lasting power outages.
2 43–49 83–95 96–110 154–177 961–975 Major roof damage. Uprooting of shallowly rooted trees. Risk of power loss.
1 33–42 64–82 74–95 119–153 976–990 Damages to roofs, breaking of large branches, uprooting of shallowly rooted trees. Extensive damage to power lines.

Note: Category based on maximum sustained wind speed for 1 minute. *Klotzbach et al. (2020) proposed that minimum sea level air pressure is a more reliable indicator of normalized Hurricane damage than windspeed, because air pressure can be measured more easily and precisely.

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