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Learn about the formation and characteristics of hurricanes, typhoons and tornadoes.
Depending on its location and strength, a tropical cyclone is called a hurricane (/ ˈ h ʌr ɪ k ən,-k eɪ n /), typhoon (/ t aɪ ˈ f uː n /), tropical storm, cyclonic storm, tropical depression, or simply cyclone. A hurricane is a strong tropical cyclone that occurs in the Atlantic Ocean or northeastern Pacific Ocean.
An EF2 or higher is considered a significant tornado. tornado warning — National Weather Service issues to warn public of existing tornado. tornado watch — Alerts public to possibility of tornado forming. tropical depression — A tropical cyclone in which the maximum sustained surface wind is 38 mph (33 knots) or less.
Storm warning flag (US) At sea, a storm warning is a warning issued by the National Weather Service of the United States when winds between 48 knots (89 km/h, 55 mph) and 63 knots (117 km/h, 73 mph) are occurring or predicted to occur soon. The winds must not be associated with a tropical cyclone. [1]
The equivalent of a Tropical Storm Warning for inland counties, put into use after multiple Tornado Warnings were issued for Hurricane Katrina, when tornadoes were not present, but winds were the equivalent of EF0-2 tornadoes. These are issued by local NWS forecast offices, not the NHC. Inland Hurricane Warning
During the Atlantic hurricane season, even before a tropical cyclone forms, there are words like “tropical wave,” “tropical disturbance,” “invest” and “potential tropical cyclone.”
Yes, a hurricane is the same as a typhoon, which is also the same as a cyclone. A “hurricane” occurs over the North Atlantic or over the central or eastern North Pacific oceans—in places ...
If a tornado is occurring (a tornado has been seen by spotters) or is imminent (Doppler weather radar has observed strong rotation in a storm, indicating an incipient tornado), the severe thunderstorm warning will be superseded by a tornado warning in the United States and Canada. [13]