Tropical Depression: Definition, Conditions, and Damage - Treehugger
2021年5月13日 · As the weakest tropical cyclone type, tropical depressions — a low pressure area surrounded by circulating thunderstorms and maximum sustained winds of 38 miles per hour or less — aren't talked...
What is the difference between a tropical storm and a tropical depression?
A tropical depression forms when a low pressure area is accompanied by thunderstorms that produce a circular wind flow with maximum sustained winds below 39 mph. An upgrade to a tropical storm occurs when cyclonic circulation becomes more organized and maximum sustained winds gust between 39 mph and 73 mph.
Tropical Definitions - National Weather Service
In comparison to tropical cyclones, the maximum winds occur relatively far from the center (greater than 60 nautical miles) and have a less symmetric wind field and distribution of convection. Tropical Depression A tropical cyclone that has maximum sustained surface winds (one-minute average) of 38 mph (33 knots) or less. Tropical Storm
What’s the difference between a tropical depression, tropical storm and ...
2021年8月25日 · What is a Tropical Depression? A tropical depression is a tropical cyclone that has maximum sustained winds below 39 mph. Once a tropical depression forms, the National Hurricane Center gives it a number based on its order of formation in the hurricane season (Tropical Depression One, Two, Three, etc.). What is a Tropical Storm?
Tropical Cyclone Classification | National Oceanic and …
2023年10月19日 · Tropical cyclones with an organized system of clouds, and thunderstorms with a defined circulation and maximum sustained winds of 38 mph (61 km/h) or less, are called "tropical depressions". Once the tropical cyclone reaches winds of at least 39 mph (63 km/h), they are typically called a "tropical storm" and ass
What is a tropical depression? - FOX Weather
2023年6月5日 · A tropical depression is a cyclone that has maximum sustained winds of 38 mph or less. When the system strengthens and has winds greater than 38 mph, it is categorized as a tropical storm.
What's the Difference Between a Tropical Depression ... - AccuWeather
2010年7月22日 · Most tropical depressions have maximum sustained winds between 25 and 35 mph. In the U.S., the National Hurricane Center (NHC) is responsible for issuing advisories upgrading or...
Tropical Depressions, Tropical Storms & Hurricanes: What’s the ...
2024年8月28日 · A tropical depression is the least intense stage of a tropical cyclone. When a low-pressure area gathers thunderstorms with an organized circulation pattern that persists for at least 24 hours, it is categorized as a tropical depression. The primary characteristic of a tropical depression is sustained maximum winds of up to 38 miles per hour.
Tropical Depression - University of Illinois Urbana-Champaign
A tropical depression is designated when the first appearance of a lowered pressure and organized circulation in the center of the thunderstorm complex occurs. A surface pressure chart will reveal at least one closed isobar to reflect this lowering. When viewed from a satellite, tropical depressions appear to have little organization.
What Is a Tropical Depression? - Ablison
2024年10月24日 · A tropical depression is a low-pressure weather system that forms over tropical and subtropical waters. It is characterized by sustained winds of less than 39 miles per hour, and a closed circulation of clouds and thunderstorms around a center of low pressure.