The Clatsop County Natural Hazard Mitigation Plan adequately describes the causes and characteristics of wind and winter storms, as well as the location and extent of wind and winter storm hazards. The regions (and City's) history of events are adequately described within the County's Plan as well. Because coastal wind storms typically occur during winter months, they are sometimes accompanied by ice, freezing rain, flooding, and very rarely, snow. More than likely, however, the coasts winter will just be windy, cold, and wet.
The County estimates a 'high' probability that wind and winter storms will occur in the future. Windstorms occur yearly, and the more destructive storms occur once or twice per decade. The County additionally estimates a 'high' vulnerability to windstorms; meaning more than 10% of the population or regional assets would be affected by a major windstorm event. Both estimates are true for the City as well.
Cannon Beach's long, narrow configuration on the Pacific shoreline makes it very vulnerable to windstorms blowing in from the ocean. Winter storms with snow and ice that are severe in nature are relatively uncommon along the coastal strip. Because of the infrequent nature, many drivers lack necessary skills and equipment to continue routine travel, and many homes are not constructed to adequately protect their plumbing systems from freezing. Additionally, roughly 65% of the homes in the community are for vacation use and not occupied year-round.
During prolonged periods of freezing weather, it is common to find water pipes broken with water running unchecked into homes and onto the ground. When this becomes widespread, the public water reservoirs drain with resultant loss of flow needed for fire protection and public health.