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A tropical cyclone is the generic term for a warm-cored, non-frontal synoptic-scale low-pressure system over tropical or subtropical waters around the world. [4] [5] The systems generally have a well-defined center which is surrounded by deep atmospheric convection and a closed wind circulation at the surface. [4]
The strongest hurricane to reach land was the Labor Day Hurricane of 1935 (892 hPa). [12] The deadliest hurricane was the Great Hurricane of 1780 (22,000 fatalities). [54] The deadliest hurricane to make landfall on the continental United States was the Galveston Hurricane in 1900, which may have killed up to 12,000 people. [55]
Hurricanes are mixed-phase clouds, meaning that liquid and solid water (ice) are both present in the cloud. Typically, liquid water dominates at altitudes lower than the freezing level and solid water at altitudes where the temperature is colder than -40 °C. Between 0 °C and -40 °C water can exists in both phases simultaneously.
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These hurricanes have speeds starting at about 111 - 129 mph. Hurricane Dorian, a category 5 hurricane in 2019 had speeds of 185 mph. Convection: A fancy way to describe a thunderstorm formation ...
A fast-moving Hurricane Hazel brought sustained winds of 77 mph (124 km/h) and wind gusts up to 90 mph (140 km/h). [11] The remnants of Hurricane Audrey brought 80 mph winds across southern Canada. [12] A weather station on Nova Scotia recorded 100 mph sustained winds when Hurricane Juan made landfall in 2003.
Forecasters say soon-to-be Hurricane Helene could undergo a Fujiwhara "interaction" with another storm over the south-central US. ... are little water whirls that spin around. This article ...