Pacific County Emergency Management Agency
An earthquake is the sudden release of stored energy. Most earthquakes occur along a fracture within the earth, called a fault. There are multiple types of faults that can effect Pacific County, Because of our proximity to the Cascadia Subduction Zone, which lies of the coast, this is the most worrisome area .The shaking caused by this sudden shift is often very small, but occasionally large earthquakes produce very strong ground shaking. It is this strong shaking and its consequences – ground failure, landslides, liquefaction – that damages buildings and structures and upsets the regional economy.
Tsunamis are a series of waves that threaten people and property along shorelines. Sudden raising or lowering of the earth’s crust during earthquakes generally causes a tsunami, although landslides and underwater volcanic eruptions also can generate them. Movements of the sea floor displace the water column, setting off a series of waves that radiate outward like pond ripples. Only as a tsunami approaches land does it become a hazard; in shallow water, it gains height as its waves slow and compress.
Tsunamis do not resemble their usual icon, a towering wave with a breaking crest. Instead, they come onshore resembling a series of quickly rising tides, and they withdraw with currents much like those of a river. Swift currents commonly cause most of the damage from tsunamis. A Pacific Ocean tsunami can affect the entire Pacific basin, while a tsunami in inland waters can affect many miles of shoreline. Tsunamis typically cause the most severe damage and casualties near their source. The nearby coastal population often has little time to react before the tsunami arrives. Persons caught in the path of a tsunami often have little chance to survive; debris may crush them, or they may drown. Children and the elderly are particularly at risk, as they have less mobility, strength, and endurance.
A severe storm can be anything involving strong winds and large hail, thunderstorms, tornadoes, rain, snow, or other mixed precipitation. Typically, transportation issues and loss of utilities come about because of a severe storm.