Local mitigation strategy (LMS) - Volusia County Government

SECTION 6: VULNERABILITY ASSESSMENT6.7 SEVERE WINTER STORMSevere winter storms, typically consisting of snow and ice, infrequently occur in Volusia County.Since it cannot be predicted where severe winter storms (as defined in the Hazard Profiles section) mayoccur, all existing and future buildings, facilities and populations are considered to be exposed to thishazard and could potentially be impacted. It is important to note that only reported severe winter stormoccurrences have been factored into this vulnerability assessment 5 .To estimate losses due to extreme wind, NCDC historical thunderstorm wind loss data for occurrences inthe County were used to develop an extreme wind stochastic model. In this model: Losses were obtained and scaled for inflation; Average historic extreme wind damageability was used to generate losses for historicalthunderstorm wind events where losses were not reported; Expected annualized losses were calculated through a non-linear regression of historical data;and Probabilistic losses were scaled to account for would-be losses where no exposure/instrumentwas present at the time of the event.Table 6.7 shows total exposure and potential annualized property losses and percent loss ratios resultingfrom severe winter storm for Volusia County. While all of Volusia County’s inventoried assets are equallyexposed to severe winter storm, any anticipated future damages or losses are expected to be minimal.5 It is possible that additional extreme wind events may have occurred since 1950 that were not reported to NCDC and are not accounted for inthis analysis.Volusia County Multi-jurisdictional Local Mitigation StrategyFebruary 20106:18