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Last modified
1/25/2010 6:46:56 PM
Creation date
10/5/2006 12:49:39 AM
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Title
Colorado's Vulnerablility to Very High Risk Natural Hazards
Date
1/1/1983
Prepared By
Division of Disaster Emergency Services
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />'-' <br /> <br />.. <br /> <br />examples. Map 1, (page 9) shows the occurrence of tornadic <br />events in Eastern Slope counties from 1978 through 1982 as <br />recorded by the National Weather Service using the Limon <br />radar. The pattern of occurrence over this 5 year period <br />shows that Front Range foothills counties can expect a <br />significant number of tornados every year. With better <br />sensing systems, more have been observed in the east. Table <br />1, (below) shows the monthly d istribut ion of occurrence in <br />all counties. May, June and July are obviously a very high <br />risk period of time; (this table was also furnished by <br />National Weather Service using radar sensing). The destruc- <br />tive effects of tornados are so great that a significant <br />threat remains to all who live on the Eastern Slope. The <br />fact that very few people have been killed has led to some <br />complacency among Coloradans who live east of the Continental <br />Divide. <br /> <br />. <br /> <br /> Table 1 <br /> COLORADO TORNADOES BY MONTH, 1975-1982 <br /> MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER TOTAL <br /> 1975 0 0 13 4 3 0 0 20 <br /> 1976 0 4 11 13 1 4 4 37 <br /> 1977 3 2 7 10 4 6 0 32 <br /> 1978 0 0 6 4 6 2 0 18 . <br /> 1979 1 0 2 12 20 1 1 37 <br />',-, 1980 1 1 7 9 2 3 0 23 <br /> 1981 0 0 5 10 6 3 1 25 <br /> 1982 0 0 8 30 12 6 1 57 <br /> 249 <br /> POPULATION AND POPULATION GROWTH IN COLORADO <br /> <br />"- <br /> <br />There is a close correlation between the population <br />settlement pattern, population growth and the cost of <br />disasters. As population settlement grows near areas <br />susceptible to the occurrence of natural phenomena, more <br />people may be impacted. As growth continues, and competi- <br />tion for remaining land increases, there is an incentive to <br />develop land close to areas where extreme events are likely <br />to occur. <br /> <br />To better understand the correlation between Colorado's <br />population and the cost of disasters from very high risk <br />phenomena, it is useful to ,consider the pattern of popula- <br />tion dispersal in the State, the concentration of population <br />relative to high risk areas, rates of population growth and <br />development, and the pattern of tourist recreation near risk <br />areas.* <br /> <br />* population ~ata used in this study is taken from publica- <br />tions of the Demographic Section, Colorado Division of Local <br />Government <br /> <br />. <br /> <br />8 <br />
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