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Sherburne County Multi -Hazard Mitigation Plan, 2020 <br />Severe Summer Storms (Tornadoes, Windstorms, Lightning, Hail) and Electrical Outages <br />According to NOAA data, the natural hazards that caused the greatest overall property loss in <br />Minnesota between 3.996 and 203.4 were thunderstorms and lightning, at s86.3 million per year. The <br />state also experienced 23 electric transmission outages from 3.992 to 2009, five of which were due to <br />heat waves and thunderstorms. On average, the number of people affected annually by all electric <br />outages during 2oo8 to 203.3 in Minnesota was 449,995, with a high of 3.,46o,810 in 2011 (U.S. <br />Department of Energy, 203-5). Figure io below shows the seasonality of electric outages by month for <br />the years 2oo8-2oi3, and Figure ii shows the causes of outages in the state between 2oo8 and 203.3, <br />with the largest cause being weather/falling trees. <br />Figure 10. Electric Utility Reported Power Outages by Month in Minnesota (2008-2013) <br />12 <br />10 <br />8 <br />6 <br />4 <br />2 <br />0 <br />ZIP <br />k �Q ao?' <br />Source: U.S. Department of Energy, 2015 <br />Figure 11. Causes of Electric -Utility Reported Outages in Minnesota (2008-2013) <br />17 <br />F97 <br />73 <br />Source: U.S. Department of Energy, 2015 <br />r Animal <br />a Faulty Equipment/ Human Frt r <br />■ overdemand <br />■ Planned <br />• Theft /Vandalism <br />■ unknown <br />vehlcle Accident <br />■ Weather j Falling Trees <br />u of Incidents <br />i 20D8 <br />■ 2009 <br />■ 2010 <br />E 2011 <br />• 2012 <br />■ 2013 <br />Sherburne County Emergency Management identified that there are existing program gaps and <br />deficiencies that make its citizens more vulnerable to summer storms (includes hail) and should be <br />addressed with new mitigation efforts to reduce vulnerability. They include: <br />Page153 <br />