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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 ...
Storm surge is an above-normal rise in seawater along the coast caused by a tropical storm or hurricane and exceeding normal astronomical tides. "These tropical cyclones generate enough wind and ...
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 ...
Northeast Florida could get 3 to 5 feet of storm surge, the hurricane center projects. Storm surge is a serious concern with any major hurricane, which NOAA classifies as Category 3 or above. But ...
The Hurricane Surge Index is a metric of the potential damage a storm may inflict via storm surge. It is calculated by squaring the dividend of the storm's wind speed and a climatological value (33 m/s or 74 mph), and then multiplying that quantity by the dividend of the radius of hurricane-force winds and its climatological value (96.6 km or ...
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 ...
Additional sea level rise will increase storm surge levels. [47] [48] It is plausible that extreme wind waves see an increase as a consequence of changes in tropical cyclones, further exacerbating storm surge dangers to coastal communities. [21] Between 1923 and 2008, storm surge incidents along the US Atlantic coast showed a positive trend. [49]