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A storm surge, storm flood, tidal surge, or storm tide is a coastal flood or tsunami-like phenomenon of rising water commonly associated with low-pressure weather systems, such as cyclones. It is measured as the rise in water level above the normal tidal level, and does not include waves. [1]
It is this combined effect of low pressure and persistent wind over a shallow water body which is the most common cause of storm surge flooding problems. The term "storm surge" in casual (non-scientific) use is storm tide; that is, it refers to the rise of water associated with the storm, plus tide, wave run-up, and freshwater flooding. When ...
The more gradual the slope, the higher the storm surge. "The height of the storm surge is also dictated by the shape of the coast," Kottlowski said, citing differences between a concave coast ...
The main cause of storm-related fatalities had been shifting away from storm surge and towards freshwater (rain) flooding. [31] However, the median death rate per storm had increased through 1979, with a lull during the 1980–1995 period. This was due to greater numbers of people moving to the coastal margins and into harm's way.
Storm surge is not limited to tropical systems and has been observed during powerful coastal storms, such as nor'easters. Heavy tropical rain can also cause significant flooding far away from the ...
Weather. 24/7 Help. ... While winds are the primary cause of storm surge, it's also affected by a storm's angle of approach, the shape of the ocean floor and the low pressure within a storm, which ...
Storm surges are rises in sea level caused by the reduced pressure of the core that in effect "sucks" the water upward and from winds that in effect "pile" the water up. Storm surges can produce extensive coastal flooding up to 40 kilometres (25 mi) from the coastline. [46]
What is storm surge? Storm surge occurs when there’s a departure from normal tide levels, said Pablo Santos, a meteorologist at the National Weather Service in Miami. “Whatever amount of water ...