what kind of intensity it has?
It is determined by either the storm's maximum sustained winds or lowest barometric pressure.
Atlantic hurricane
is determined by either the storm's maximum sustained winds or lowest barometric pressure.
what is tropical storm arlene (1981)? It was a rare off-season tropical cyclone. what is the physical structure of this above type of cyclone just mentioned? Its formation was unusual, originating from a tropical disturbance that crossed from the eastern Pacific Ocean into the Caribbean Sea; few Atlantic hurricanes develop in this manner. what is the seasonal variation seen in this last mentioned hurricane? Approximately 97 percent of tropical cyclones that form in the North Atlantic develop between the dates of June 1 and November 30 and the official end has shifted from its initial date of October 31.
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Atlantic hurricane [SEP] Intensity
Generally speaking, the intensity of a tropical cyclone is determined by either the storm's maximum sustained winds or lowest barometric pressure. The following table lists the most intense Atlantic hurricanes in terms of their lowest barometric pressure. In terms of wind speed, Hurricane Allen (in 1980) was the strongest Atlantic tropical cyclone on record, with maximum sustained winds of 190 mph (305 km/h). However, these measurements are suspect since instrumentation used to document wind speeds at the time would likely succumb to winds of such intensity. Nonetheless, their central pressures are low enough to rank them among the strongest recorded Atlantic hurricanes.