0
Cyclones of the Southern Hemisphere are measured by wind speed and assigned a category number. Whether or not they are classified as a cyclone is also determined by barometric pressure.
Wind speeds determine the category as follows:
Category 1: winds up to 125km/h
Category 2: 125- 170 km/h
Category 3: 170 - 225 km/h
Category 4: 225 - 280 km/h
Category 5: in excess of 280 km/h
Hurricanes, which are cyclones in the north-Western Hemisphere, are measured on the Saffir-Simpson scale. The categories are measured as follows:
Tropical Storm - Winds 39-73 mph
Category 1 Hurricane - winds 74-95 mph
Category 2 Hurricane - winds 96-110 mph
Category 3 Hurricane - winds 111-130 mph
Category 4 Hurricane - winds 131-155 mph
Category 5 Hurricane - winds 156 mph and up
Wiki User
∙ 14y ago
Wiki User
∙ 7y agoA tropical depression has maximum wind speeds of 38 miles per hour. Above that speed it is considered a tropical storm.
Wiki User
∙ 11y ago38 mph or less. Any higher and it is called a tropical storm.
Wiki User
∙ 11y agothe wind speed is 80f
Add your answer:
Earn +20 pts
Wind speed above 74 miles per hour tropical depression tropical disturbance tropical storm?
If a tropical system has sustained winds greater than 74 miles per hour then it is a full-fledged hurricane.
At what wind speed do tropical storms become hurricanes?
There is not set lower limit. A tropical depression, the weakest level of tropical cyclone is defined by having a closed Circulation. However. A tropical depression usually has sustained winds of at least 30 mph.
What factor determines whether a storm is considered a tropical depression tropical storm or hurricane?
The determining factor is the sustained wind speed. If the tropical system has sustained winds of less than 39 miles per hour, then it is a tropical depression. If sustained winds are in the range of 39 to 73 mph, then it is a tropical storm. If sustained winds are 74 mph or faster, then it is a hurricane.
What is wind speed and what does it have to be with hurricane?
Wind speed is the speed that wind moves at. It relates to hurricanes in that a tropical storm does not become a hurricane until sustained winds reach 74 miles per hour or faster.
Why is a hurricane called a tropical depression?
A tropical depression is a tropical cyclone with winds under 39 mph. When winds reach or exceed that limit it is called a tropical storm and is given a name. Tropical depression 9 denotes the 9th tropical cyclone of that year in a particular ocean basin.
What are the names of the 5 levels of hurricanes and what is the wind speed of each stage?
thunderstorm, tropical disturbance, tropical depression, tropical storm, and hurricane
What is a knot in a tropical depression?
A knot is a measure of speed, in this case wind speed. 1 knot is equal to about 1.15 miles per hour.
What is the speed of tropical depression?
A tropical depression has winds under 39 mph.
What are the wind speeds in miles per hour for a tropical depression?
A tropical depression has sustained winds of 38 mph or less.
Wind speed above 74 miles per hour tropical depression tropical disturbance tropical storm?
If a tropical system has sustained winds greater than 74 miles per hour then it is a full-fledged hurricane.
At what speed does a tropical depression form?
There is no lower limit for tropical depression winds, which go up to 38 mph.
At what wind speed do tropical storms become hurricanes?
There is not set lower limit. A tropical depression, the weakest level of tropical cyclone is defined by having a closed Circulation. However. A tropical depression usually has sustained winds of at least 30 mph.
How do a meteorologists determine the difference between a tropical storm and a hurricane?
By measuring the sustained wind speed. If the wind speed of a tropical cyclone is anywhere in the range of 39 to 73 mph then it is a tropical storm. If the wind speed is 74 mph or greater then it is a hurricane.
What factor determines whether a storm is considered a tropical depression tropical storm or hurricane?
The determining factor is the sustained wind speed. If the tropical system has sustained winds of less than 39 miles per hour, then it is a tropical depression. If sustained winds are in the range of 39 to 73 mph, then it is a tropical storm. If sustained winds are 74 mph or faster, then it is a hurricane.
What factors determine whether a storm is considered a tropical depression tropical storm or hurricane?
The determining factor is the sustained wind speed. If the tropical system has sustained winds of less than 39 miles per hour, then it is a tropical depression. If sustained winds are in the range of 39 to 73 mph, then it is a tropical storm. If sustained winds are 74 mph or faster, then it is a hurricane.
What was the wind speed when Tropical Storm Katrina was formed?
All tropical cyclones are considered tropical storms when wind reach 39 mph
How does typhoon differ from tropical storm or tropical depression?
First, it is a tropical depression with heavy clouds and thunderstorms. Next, it is a tropical storm when the wind gets to 39 miles per hour. Lastly, it becomes a (hurricane,typhoon,cyclone) when the wind hits 74 miles per hour.
