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A severe tropical storm is designated as a tropical cyclone when it reaches wind speeds of 64 knots (119 km/h; 74 mph). If a tropical cyclone intensify further and reaches wind speeds of 90 knots (170 km/h; 100 mph), it will be classified as an intense tropical cyclone.
A tropical storm watch is an announcement that sustained winds of 39 to 73 mph are possible within the specified area within 48 hours in association with a tropical, subtropical, or post-tropical ...
Tropical Storm Isaac was located about 515 miles north-northwest of the Azores on Monday morning, and a turn toward the northwest at a similar forward speed is expected on Tuesday, the center said.
Helene would be Florida's 9th major hurricane hit since 2000. The storm is forecast to become a major hurricane, a Category 3, before approaching the Florida Gulf Coast on Thursday, the hurricane ...
Tropical cyclones may affect the area within 48 hours. Blue typhoon alert It may be affected by tropical cyclones within 24 hours, the average wind power can reach above level 6, or gusts above 7; or it has been affected by tropical cyclones with an average wind power of 6–7, or gusts of 7–8, and may continue. Yellow typhoon alert
In most tropical cyclone basins, use of the satellite-based Dvorak technique is the primary method used to estimate a tropical cyclone's maximum sustained winds. [5] The extent of spiral banding and difference in temperature between the eye and eyewall is used within the technique to assign a maximum sustained wind and pressure. [6]
A Tropical Storm Watch has been issued for the Gulf Coast of Florida from Indian Pass to the Walton/Bay County Line and from north of Bonita Beach to south of Englewood, in addition to the Middle ...
The heaviest wind damage occurs where a tropical cyclone's eyewall passes over land. [122] In a weaker storm, the eye may be obscured by the central dense overcast, which is the upper-level cirrus shield that is associated with a concentrated area of strong thunderstorm activity near the center of a tropical cyclone. [125]