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Chapter•5:Hazard Analysis—Tropical Cyclones <br /> Insular States by Monte Carlo Simulation, to establish design hurricane windspeeds for <br /> individual islands reflecting their differential hazard. While Hawaii Island has not had a <br /> direct hit by a hurricane, the Peterka model sponsored by NASA indicates that Hawaii Island <br /> has a long-term hurricane hazard higher than the other islands (see Figure 5-5 and Table 5-4). <br /> However, the ASCE 7-2010 Standard accepts the ARA model which has approximately <br /> uniform wind hazard across all islands of the State (Figure 5-6 and Figure 5-7). Topographic <br /> effects are reflected in the Hawaii State Building Code. The effective wind speed map of <br /> Figure 5-8 shows this effect of speed-up relative to a code design reference windspeed of 105 <br /> mph. <br /> 30 10 <br /> 20 <br /> -170 -160 -150 -140 -130 -120 -110 -100 <br /> Figure 5-5. Eastern and Central Pacific Hurricane frequency map.Contours show number of times a hurricane <br /> (intensity>64 knots)passes within 75 Nmi per 10 years. <br /> (Peterka,2002) <br /> Table 5-4. Hurricane Winds peed vs.Recurrence Interval and Modern-Da•ASCE Design Speed, <br /> Peak Gust 10 m Peterka Peterka HHRF study Peterka <br /> Open Country Uhue Oahu Hawaii Average Hilo <br /> Exposure in mph <br /> 50-year 75 80 66 96 <br /> 100-year 90 95 87 114 <br /> 500-year 128 134 122 150 <br /> 5.3.2 ASCE 7-10 <br /> The ASCE 7-10 standard will formally designate Hawaii as a Special Wind Region where the <br /> authorities having jurisdiction (State and Counties) shall establish the effects of topography <br /> on the basic wind speed. <br /> C6.5.4.1 Special Wind Regions. Although the wind speed map of Fig. 6-1 in ASCE 7 is <br /> valid for most regions of the country, there are special regions in which wind speed <br /> anomalies are known to exist. Winds blowing over mountain ranges or through gorges or <br /> 5-10 Hawaii County Multi-Hazard Mitigation Plan <br />