Res 2018-025/adopting the 2018 Hays County, Texas Hazard Mitigation Plan as the official plan of the City; authorizing the inclusion of the City of San Marcos Hazard Mitigation Plan as an appendix; designating the City Manager as the official authorized

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Hurricanes/Tropical Storms Hurricanes/Tropical Storms: Description are areas of disturbed weather in the tropics with closed isobars (a line on a map hurricane, the wind speed is 74 mph or more. localized coastal erosion, and minor wind damage can be associated with tropical storms. Risk Assessment Hurricanes/Tropical Storms: Extent Scale The extent of a hurricane can be measured by using the Saffir-Simpson Hurricane Wind Scale, a 1 to 5 rating based on a hurricane’s sustained wind speed in Table 2.26. The extent of Tropical Depressions and Tropical Storms are listed in Table 2.25. Sustained CategoryTypes of Damage Due to Hurricane Winds Winds Tropical < 39 Gusts are not considered “hurricane winds” at this classification. Depression Tropical Storm39-73At this point, the distinctive cyclonic shape starts to develop, although an eye is not usually present. Government weather services first assign names to systems that reach this intensity (thus the term named storm). (US Coast Guard, 2017 Sustained CategoryTypes of Damage Due to Hurricane Winds Winds Very dangerous winds will produce some damage: Well-constructed frame homes could have damage to roof, shingles, vinyl siding and gutters. Large branches of trees will snap and 174-95 mph shallowly rooted trees may be toppled. Extensive damage to power lines and poles likely will result in power outages that could last a few to several days. Extremely dangerous winds will cause extensive damage: Well-constructed frame homes could sustain major roof and siding damage. Many shallowly rooted trees will be snapped 296-110 mph or uprooted and block numerous roads. Near-total power loss is expected with outages that could last from several days to weeks. Devastating damage will occur: Well-built framed homes may incur major damage or removal 3 of roof decking and gable ends. Many trees will be snapped or uprooted, blocking numerous 111-129 mph roads. Electricity and water will be unavailable for several days to weeks after the storm (Major) passes. Catastrophic damage will occur: Well-built framed homes can sustain severe damage with loss of most of the roof structure and/or some exterior walls. Most trees will be snapped or 4 130-156 mph uprooted and power poles downed. Fallen trees and power poles will isolate residential areas. (Major) Power outages will last weeks to possibly months. Most of the area will be uninhabitable for weeks or months. Catastrophic damage will occur: A high percentage of framed homes will be destroyed, with 5 157 mph or total roof failure and wall collapse. Fallen trees and power poles will isolate residential areas. higher Power outages will last for weeks to possibly months. Most of the area will be uninhabitable (Major) for weeks or months. (NOAA/NWS, 2017) Jurisdiction-specific data for location, previous occurrences, extent, probability, impact, and vulnerability are found in jurisdiction annexes. 55