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.
A tsunami is a large wave or series of waves usually triggered by an underwater earthquake or landslide. Tsunamis arise from geologic forces and are not weather-related. A h â¦ urricane is a very large and powerful storm that forms over warm ocean water.o. Hurricanes and tsunamis are two completely different things. A hurricane is a type of powerful storm that forms over tropical ocean water, and produces heavy rain, sustain â¦ ed winds of at least 74 mph, large waves, and a wind-driven storm surge.