For the centralUS Pacific Coast(California, Oregon, and Washington), aHurricaneis considered extremely unlikely. Unlike the Atlantic or Gulf Coasts, the Pacific Coast is protected by two primary physical factors:Cold Ocean TemperaturesandPrevailing Wind Patterns. Hurricanes require warm ocean water (typically above 80°F) to maintain their strength. The California Current brings cold water from the North Pacific down the coast, which acts as a "chilled barrier" that causes tropical cyclones to dissipate rapidly if they move northward from the Mexican coast.
In contrast,Tsunamis(Option A) are a significant threat due to the region's proximity to theCascadia Subduction Zoneand the "Ring of Fire." A seismic event in the Pacific can send devastating waves to the central coast within hours (distant) or minutes (local).Wildfires(Option C) are an annual reality in this region, driven by seasonal droughts, high temperatures, and "Santa Ana" or "Diablo" wind conditions.
For aCertified Emergency and Disaster Professional (CEDP), recognizing these regional hazard profiles is essential for theHazard Identification and Risk Assessment (HIRA)process. Planning for a hurricane in San Francisco would be an inefficient use of resources, whereas planning for "Post-Tropical Depressions" (which bring heavy rain) or "Atmospheric Rivers" is critical. While the West Coast can experience "Hurricane-force winds" during severe winter storms, these are technicallyExtratropical Cyclones, not hurricanes. Understanding the meteorology behind these distinctions ensures that the Emergency Operations Plan (EOP) and the public warning systems are calibrated to the actual threats faced by the community, rather than generic disaster scenarios.
