How are tropical cyclones classified and categorized?
TROPICAL STORM (TS) – a tropical cyclone with maximum wind speed of 62 to 88 kph or 34 – 47 knots. SEVERE TROPICAL STORM (STS) , a tropical cyclone with maximum wind speed of 89 to 117 kph or 48 – 63 knots. TYPHOON (TY) – a tropical cyclone with maximum wind speed of 118 to 220 kph or 64 – 120 knots.
How is wind speed used to classify tropical cyclones?
A severe tropical storm is designated as a tropical cyclone when it reaches wind speeds of 64 knots (118 km/h, 74 mph). Should a tropical cyclone intensify further and reach wind speeds of 90 knots (166 km/h, 103 mph), it will be classified as an intense tropical cyclone.
How is a cyclone categorized?
Generally a Category 1 cyclone will cause little to no damage but may harm crops, trees and caravans. A Category 2 cyclone’s strongest winds are labelled “destructive” with typical gusts that travel between 125 – 164 km/h. … It will do significant damage to signs, trees and caravans and some crops.
What factors affect tropical cyclones?
The formation of tropical cyclones is strongly influenced by the temperature of the underlying ocean or, more specifically, by the thermal energy available in the upper 60 metres (about 200 feet) of ocean waters. Typically, the underlying ocean should have a temperature in excess of 26 °C (about 79 °F) in this layer.
How are cyclones Hurricanes categorized?
Meteorologists classify tropical cyclones depending on their wind speed. … Ranging from the least severe “Category 1” to the most severe “Category 5,” these categories constitute the Saffir-Simpson Hurricane Wind Scale, which estimates the damage each kind of hurricane might cause if it were to make landfall.
Do tropical storms have categories?
They are classified as follows: Tropical Depression: A tropical cyclone with maximum sustained winds of 38 mph (33 knots) or less. Tropical Storm: A tropical cyclone with maximum sustained winds of 39 to 73 mph (34 to 63 knots). Hurricane: A tropical cyclone with maximum sustained winds of 74 mph (64 knots) or higher.
What are the categories of the tropical cyclone?
Tropical cyclone categories explained
- Category one (tropical cyclone) Negligible house damage. …
- Category two (tropical cyclone) Minor house damage. …
- Category three (severe tropical cyclone) Some roof and structural damage. …
- Category four (severe tropical cyclone) …
- Category five (severe tropical cyclone)
Why are Category 1 tropical cyclones more damaging?
A Category 1 hurricane is a dangerous storm that is likely to cause some damage to roofs, gutters and siding. Winds could topple trees and snap tree branches. Winds could also affect power lines and poles, resulting in power outages. … In some instances, storm surges can cause more damage than hurricanes.
Which of the following is used to classify tropical storm categories?
Joint Typhoon Warning Center (JTWC) and other US meteorological organizations use Saffir-Simpson Scale to classify tropical storms stronger than the hurricane (or typhoon) intensity based on the maximum sustained wind (1-min mean).
Which characteristic must a tropical storm have to be classified as a hurricane?
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.