Tropical Definitions - National Weather Service
WEBIn 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
Tropical Depression: Definition, Conditions, and Damage - Treehugger
WEBMay 13, 2021 · 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 ...
Tropical Cyclone Classification | National Oceanic and …
WEBOct 19, 2023 · 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’s the difference between a tropical depression, tropical storm and ...
WEBAug 25, 2021 · 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.).
Tropical Cyclone Climatology (Text) - National Hurricane Center
WEBTropical cyclones rotate counterclockwise in the Northern Hemisphere. 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).
Saffir–Simpson scale - Wikipedia
WEBThe Saffir–Simpson hurricane wind scale (SSHWS) classifies hurricanes—which in the Western Hemisphere are tropical cyclones that exceed the intensities of tropical depressions and tropical storms—into five categories distinguished by the intensities of their sustained winds.
Atlantic 7-Day Graphical Tropical Weather Outlook
WEBStrong upper-level winds continue to keep showers and thunderstorms displaced away from the center of an area of low pressure (the remnants of Gordon) located over a thousand miles southwest of the
What is the difference between a tropical storm and a tropical depression?
WEBA 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. NASA Official: George Huffman. NASA ...
Tracking Tropical Depression Francine - The New York Times
WEBFrancine was a tropical depression over Mississippi Thursday morning Central time, the National Hurricane Center said in its latest advisory. The tropical depression had sustained wind...
Tropical Depression IDA - National Hurricane Center
WEBThe depression is moving toward the northeast near 12 mph (19 km/h), and Ida is expected to continue gradually accelerating to the northeast over the next couple days. Maximum sustained winds are near 30 mph (45 km/h) with higher gusts. Little change in strength is forecast during the next 48 hours.