Many people acted heroically in the aftermath of Hurricane Katrina. The Coast Guard, for instance, rescued some 34,000 people in New Orleans alone, and many ordinary citizens commandeered boats, offered food and shelter, and did whatever else they could to help their neighbors.
Tidal waves, or tides, are a predictable, com-mon occurrence along coastal communities, generated by forces beyond Earthâthe gravitational pull of the sun and moon. However, tsunamis are not predictable. They are often generated by earth-quakes, volcanic activity, and slope failure.idal waves, or tides, are a predictable, com-mon occurrence along coastal communities, generated by forces beyond Earthâthe gravitational pull of the sun and moon. However, tsunamis are not predictable. They are often generated by earth-quakes, volcanic activity, and slope failure.
If there is a regional earthquake, sometimes a warning will not be posted before the tsunami hits home. 5. Another well known precursor to a tsunami is that the tide will often roll out extremely quickly and far. Know this. However, if this occurs you likely have very little time before the tsunami hits.. If you are on the beach or somewhere within a tsunami zone and feel an earthquake, do not wait for a warning. Immediately move away from the low lying area to a higher one. Keep in mind that if this occurs, you may have only minutes to move to higher ground.