On Tuesday night, the 8.8 magniture earthquake hit 80 miles from Russia’s east coast, prompting Southern California’s tsunami consultation, which remains until Saturday.
Tsunami warnings and recommendations have been issued to many countries as a result of earthquakes, including the US West Coast
The National Oceanic and Atmospheric Administration (NOAA) outlined the alert system, explaining the differences between warnings, consultations, clocks and even information statements.
A tsunami warning will be issued when a tsunami is occurring or about to occur. Hazardous coastal flooding and powerful flow are possible. Residents are promptly urged to move uplands or even further inland. Tsunami recommendations are issued for strong currents and waves that are dangerous to people underwater or very nearby. The public should be away from the water and away from the beaches and waterways. Tsunami watches are issued when a distant earthquake occurs and a tsunami becomes possible. Residents must know the evacuation route and be prepared to act promptly if a warning is issued. If there is no threat, or if an event occurs very far away and the threat has not been determined, a tsunami information statement will be issued. At this time, no public action is required.
NOAA defines tsunamis as “a series of extremely long waves caused by large, sudden displacements of the ocean, usually the result of earthquakes below or near the seabed.”
(tsunami.gov via NOAA)
As the tsunami approaches the land, NOAA, it starts to slow down and the wavelength decreases, but the wave height increases and the current is enhanced.
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