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During the last two centuries, tropical cyclones have been responsible for the deaths of about 1.9 million people worldwide. It is estimated that 10,000 people per year perish due to tropical cyclones. [27] The deadliest tropical cyclone was the 1970 Bhola cyclone, which had a death toll of anywhere from 300,000 to 500,000 lives.
A back-building thunderstorm, commonly referred to as a training thunderstorm, is a thunderstorm in which new development takes place on the upwind side (usually the west or southwest side in the Northern Hemisphere), such that the storm seems to remain stationary or propagate in a backward direction. Though the storm often appears stationary ...
For thunderstorms, outflow tends to indicate the development of a system. Large quantities of outflow at the upper levels of a thunderstorm indicate its development. Too much outflow in the lower levels of a thunderstorm, however, can choke off the low-level inflow which fuels it. [ 1 ]
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]
As the storm continues to move east on Christmas Day, the risk of severe thunderstorms may diminish s Downpours, severe storms to pose travel risks in south-central US after Christmas Skip to main ...
After rounds of rain led to major, destructive flooding in Yellowstone National Park last week, AccuWeather forecasters say a surge of tropical moisture will bring more rain chances to much of the ...
The Drake Passage, between the southern tip of South America and Antarctic, is infamous as one of the most dangerous journeys on the planet. But why is it so rough – and how can you cross safely?
The initial thunderstorm activity humidifies the environment around the low pressure system, which destabilizes the atmosphere by reducing the lapse rate needed for convection. When the next shortwave or upper-level jet streak (wind maximum within the jet stream) moves nearby, the convection reignites closer to the center, which warms the core ...