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What is the minimum sustained wind for a tropical depression to be considered a tropical cyclone?
Within all basins tropical cyclones are named when the sustained winds reach at least 35 kn (40 mph; 65 km/h).
At what speed does a tropical depression become a tropical storm and is given a name?
Tropical storm: Meteorologists upgrade a tropical depression to a tropical storm when the cyclone’s circulation is more organized and has sustained wind speeds of 39 to 73 miles per hour (34 to 63 knots).
What is the wind speed of tropical depression?
Tropical depression:
tropical disturbance in which the maximum average surface wind speed ranges from 28 to 33 knots (51 to 62 km/h, force 7 in the Beaufort scale).
What is the maximum wind speed of a tropical depression?
Tropical Depression:
A tropical cyclone in which the maximum sustained surface wind speed (using the U.S. 1-minute average) is 33 kt (38 mph or 62 km/hr) or less.
At what wind speed does a tropical storm become a hurricane quizlet?
When the wind speed reaches 119 km/h (74 mph), a tropical storm becomes a hurricane.
How fast are tornado winds?
The Fujita Scale
| The Fujita Scale of Tornado Intensity | ||
|---|---|---|
| F-Scale Number | Intensity Phrase | Wind Speed |
| F1 | Moderate tornado | 73-112 mph |
| F2 | Significant tornado | 113-157 mph |
| F3 | Severe tornado | 158-206 mph |