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<br />The Miami-Dade Local Mitigation Strategy <br />June 2011 <br /> <br />Table 4 <br />Scientific Measures to Identify Extent <br /> <br />Saffir-Simpson Scale <br /> <br />Category Wind Sneed Impact <br />Tropical 39-73 N/A <br />Storm <br />1 74-95 mph No real damage to buildings. Damage to unanchored mobile <br /> ( 64-82 kt) homes. Some damage to poorly constructed signs. Also, some <br /> coastal flooding and minor pier damage. <br />2 96-110 mph Some damage to building roofs, doors and windows. Considerable <br /> (83-95 kt) damage to mobile homes. Flooding damages piers and small craft <br /> in unprotected moorings may break their moorings. Some trees <br /> blown down. <br />3 111-130 mph Some structural damage to small residences and utility buildings. <br /> (96-113 kt) Large trees blown down. Mobile homes and poorly built signs de- <br /> stroyed. Flooding near the coast destroys smaller structures with <br /> larger structures damaged by floating debris. Terrain may be <br /> flooded well inland. <br />4 131-155 mph More extensive curtainwall failures with some complete roof <br /> (114-135 kt) structure failure on small residences. Major erosion of beach areas. <br /> Terrain may be flooded well inland. <br />5 156 mph and Complete roof failure on many residences and industrial buildings. <br /> up (135+ kt) Some complete building failures with small utility buildings blown <br /> over or away. Flooding causes major damage to lower floors of all <br /> structures near the shoreline. Massive evacuation of residential <br /> areas may be required. <br /> <br />Source: National Hurricane Center, <br />http://www.nhc.noaa.gov/HA W2/english/basics/saffir simpson.shtml (accessed on October <br />9,2009) <br /> <br />25 <br />