GEOLOGY

Detailed explanation-1: -A tropical cyclone is an intense circular storm that originates over warm tropical oceans. It is also called a hurricane or a typhoon. It is characterized by low atmospheric pressure and heavy rain, and its winds exceed 119 km (74 miles) per hour.

Detailed explanation-2: -The terms “hurricane” and “tropical cyclone” refer to the same kind of storm: a rotating, organized system of clouds and thunderstorms that originates over tropical or subtropical waters and has closed, low-level circulation.

Detailed explanation-3: -Tropical cyclones with maximum sustained surface winds of less than 39 miles per hour (mph) are called tropical depressions. Those with maximum sustained winds of 39 mph or higher are called tropical storms. When a storm’s maximum sustained winds reach 74 mph, it is called a hurricane.

Detailed explanation-4: -SEVERE TROPICAL STORM (STS), a tropical cyclone with maximum wind speed of 87 to 117 kph or 48-63 knots. TYPHOON (TY)-a tropical cyclone with maximum wind speed of 118 to 184 kph or 64-99 knots.

Detailed explanation-5: -Once a tropical cyclone reaches maximum sustained winds of 74 miles per hour or higher, it is then classified as a hurricane, typhoon, or tropical cyclone, depending upon where the storm originates in the world. In the North Atlantic, central North Pacific, and eastern North Pacific, the term hurricane is used.