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2021 Multijurisdictional Local Hazard Mitigation Plan  Windstorm—Mobile homes can be seriously damaged by wind gusts over 80 mph, even if they are anchored (National Severe Storms Laboratory, 2018). Properties at higher elevations or on ridges may be more prone to wind damage. Falling trees can result in significant damage to structures.  Tornado—A major tornado could cause widespread damage to property in the planning area, but such an event is unlikely. Tornadoes of sufficient magnitude to cause significant property damage have not historically occurred with the planning area (no recorded events with a magnitude greater than F0), so the vulnerability of the planning area to this hazard is considered to be low.  Fog—Fog is not likely to damage property, with the exception of motor vehicles that get into accidents because of poor visibility.  Heavy Rain—Damage from heavy rain in the planning area is most likely to be related to secondary hazards accompanying the event, such as flooding or landslides  Thunderstorms—Damage from thunderstorms in the planning area is most likely to be related to secondary hazards accompanying the event, such as flooding, landslides, or damaging winds. If lightning directly strikes a building, it may cause substantial damage and may even set the structure on fire. No modeling is available for quantitative loss estimations for the severe weather hazard. Instead, loss estimates were developed representing 1 percent, 3 percent, and 5 percent of the replacement value of exposed structures:  Loss of 1 percent of planning area replacement value—$1.9 billion  Loss of 3 percent of planning area replacement value—$ 5.7 billion  Loss of 5 percent of planning area replacement value—$9.6 billion 14.3.3 Critical Facilities All critical facilities are vulnerable during severe weather events, especially those that lack backup power generation capabilities. When facilities supplying power to planning area land line telephone systems are frequently disrupted, significant issues arise with communication in the planning area. In addition, some facilities are particularly vulnerable to specific types of severe weather events:  Windstorms—Facilities located near trees or power lines that are likely to fall are also vulnerable. Roads and other transportation infrastructure could be blocked by downed trees or other debris.  Tornado—Critical facilities in the direct path of a tornado would be particularly vulnerable.  Heavy Rain or Thunderstorm—Facilities located in areas prone to localized or major flooding are vulnerable. Transportation systems are vulnerable to disruption from secondary hazards such as flooding or landslides.  Extreme Heat—Transportation systems are vulnerable to the impacts of extreme heat on facility function. 14.3.4 Environment The environment is highly vulnerable to severe weather events. Natural habitats such as streams and trees exposed to the elements during a severe storm risk major damage. Prolonged rains can saturate soils and lead to slope failure. Flood events caused by severe weather can produce river channel migration or damage riparian habitat. Storm surges can erode beachfront bluffs and redistribute sediment loads. 14-18