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65 <br /> <br /> <br />Climate change has begun to increase the severity of some hazards. Changes in extreme <br />weather events are the primary way that most people experience climate change. Human- <br />induced climate change has already increased the number and strength of some of these <br />extreme events. Over the last 50 years, much of the United States has seen an increase in <br />prolonged periods of excessively high temperatures, more heavy downpours, and in some <br />regions, more severe droughts. 7 <br /> <br /> <br />5.2 HAZARD IDENTIFICATION AND SCREENING <br /> <br />The Local Hazard Mitigation Planning Team considered the full range of potential <br />hazards and their relevance to San Leandro and determined which hazards <br />warranted further discussion, as indicated in Table 5-1. For each hazard detailed in <br />Table 5-1, the planning team identified the geographic areas, the extent, previous <br />occurrences and probability of future events. While multiple hazards were identified, <br />earthquakes (particularly shaking) and flooding were ranked as highest priorities <br />based on past disasters and expected future impacts, as they pose the most significant <br />risk for potential loss. <br />The planning team defined the probability of hazards as “high” which is defined as <br />occurring every 1-10 years, “medium” as occurring every 10-50 years, and “low” as <br />occurring at intervals greater than 50 years. For some hazards, due to the wide <br />variations of type and magnitude, there is no formal way to estimate the probability <br />of these events, which will be noted throughout this section. <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />7 U.S. Global Change Research Program (2014), Climate Change Impacts in the United States, p. 15. <br />http://nca2014.globalchange.gov/ <br /> <br />104