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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.
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∙ 12y ago
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∙ 13y agoOnce a group of thunderstorms has come together under the right atmospheric conditions for a long enough time, they may organize into a tropical depression. Winds near the center are constantly between 20 and 34 knots (23 - 39 mph).
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∙ 10y agoA hurricane is not a tropical depression, but can develop from one. A tropical depression is a weak but fairly organized tropical low pressure system with sustained winds of less than 39 mph. The "depression" refers part refers to the low barometric pressure. A tropical depression that continues to organize and intensify becomes a tropical storm once winds reach 39 mph and becomes a hurricane when winds reach 74 mph.
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∙ 6y agoA Tropical depression is a tropical cyclone that has has a maximum sustained winds of less than 63 kilometers per hour (kph) near the center
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∙ 12y agoIt is called a tropical depression because it produce low air pressure.
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∙ 13y agoA tropical depression is a tropical cyclone wind winds under 39 mph. When wind reach 39 mph it becomes a tropical storm. When they reach 74 mph it becomes a hurricane.
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When did Katrina first from as a tropical depression?
Tropical depression 12 formed on August 23, 2005. It would later become Hurricane Katrina.
What is tropical cyclone in western Atlantic called?
a tropical storm.. if it was a hurricane-status in the atlantic, it would be called a typhoon.
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 a typhoon depression?
A typhoon and a tropical depression are different intensity levels of tropical cyclone. A tropical depression is organized enough to be considered a tropical cyclone, but has sustained winds of less than 39 mph. If a depression gets stronger it is considered a tropical storm. A typhoon is equivalent to a hurricane, with sustained winds of 74 mph or higher. Most typhoons stat out as tropical depressions.
What type of tropical storm with winds 119km per hour or more?
Such a storm is called a hurricane.
Before becoming a hurricane what is it called?
A tropical storm. Before that it is usually a tropical depression.
What are the types of storms that form before a hurricane forms?
Tropical disturbance -> tropical depression -> tropical storm -> tropical cyclone (hurricane). *Hurricane is a local name, for tropical cyclones (official name) that appear in the Atlantic.
Hurricane formation from weakest to strongest?
A hurricane will start as a Tropical Wave. It then becomes a Tropical Depression. A TD is given a number but not a name. Once the TD reaches 39 mile per hour winds its given a name and becomes a Tropical Storm. After reaching 74 mile per hour winds it becomes a hurricane.
Was hurricane Andrew a tropical depression?
Yes. Hurricane Andrew was Tropical Depression Three for about a day before becoming Tropical Storm Andrew and then Hurricane Andrew 5 days later.
How was Hurricane Andrew form?
it started as a tropical disturbance at first, then it became a tropical depression, and a tropical storm, then a hurricane.
How did hurricane Andrew form?
he started as a tropical depression, then he became a tropical storm, then BAM! hurricane...!
What are two classifications of a storm before it can be called a hurricane?
It is called a tropical depression when its winds are still below 39mph, and a tropical storm after that, up to 73mph.
What stages does a storm go through before it develops into a hurricane?
Tropical Depression and then Tropical Storm THEN Hurricane!
What do hurricanes begin that starts with t?
Before a storm becomes a hurricane it is called a tropical storm. Prior to that it is either a tropical depression or a tropical disturbance.
Does a hurricane start a tropical depression?
Yes, hurricanes start out as tropical depressions.
When did Hurricane Katrina first develop?
Hurricane Katrina first developed as a tropical depression on August 23 2005.
What are the sources of Hurricane Katrina?
Hurricane Katrina formed as Tropical Depression Twelve over the southeastern Bahamas on August 23, 2005 as the result of an interaction of a tropical wave and the remains of Tropical Depression Ten
