Hurricane Wind Scale Continued SAFFIR-SIMPSON HURRICANE WIND SCALE CategoryWindsDamage 3111-130 MPH Extensive damage to exterior of buildings Many trees uprooted and many roads blocked Extremely limited availability of water and electricity 4131-155 MPH Loss of roof structures and/or some exterior walls Most trees uprooted and most power lines down Limited road access due to debris Power outages lasting for weeks to months 5More than 155 MPH A high percentage of buildings will be destroyed Fallen trees and power lines isolate most areas Power outages lasting for weeks to months Most areas will be uninhabitable
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