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Rapid deepening is when the minimum sea-level pressure of a tropical cyclone decreases drastically in a short period of time. The National Weather Service describes rapid deepening as a decrease of 42 mbar in under 24 hours. [1] However, this phrase is liberally applied to most storms undergoing rapid intensification. B C D E F G H I 10 J K L M N O Categories: | | | | | | | ...
Cyclone Catarina, a rare South Atlantic tropical cyclone viewed from the International Space Station on March 26, 2004. ...
The National Weather Service (NWS) is one of the six scientific agencies that make up the National Oceanic and Atmospheric Administration (NOAA) of the United States government. ...
The bar (symbol bar) and the millibar (symbol mbar, also mb) are units of pressure. ...
Necessary conditions
In order for rapid deepening to occur, many conditions must be in place. Water temperatures must be extremely warm (near or above 30°C (86°F), and water of this temperature must be sufficiently deep to avoid waves churning up cooler waters. Wind shear must be low; when wind shear is high, the convection and circulation in the cyclone will be disrupted. Also, there usually must be an anticyclone in the upper layers of the troposphere above the storm. For extremely low surface pressures to develop, air must be rising fairly rapidly in the eye of the storm. An upper-level anticyclone helps channel this air away from the cyclone efficiently. Visualisation of the SST of the ocean just before Hurricane Bob (August 14, 1991) Sea surface temperature (SST) is the water temperature at 1 meter below the sea surface. ...
Wind shear jake rinow is the god of technologyis a difference in wind speed or direction between two points in the atmosphere. ...
The Troposphere is the lowermost portion of Earths atmosphere. ...
Eye of Category 4 Hurricane Isabel seen from the International Space Station on September 15, 2003 The eye is a region of mostly calm weather found at the center of strong tropical cyclones. ...
Famous Instances In 2004, Hurricane Charley was approaching the coast of Florida as a category two storm on the Saffir-Simpson Scale of hurricane strength. When just off the coast, however, its sustained winds rapidly increased from 110 to 150 mph (along with a pressure drop from 965 to 941 mbar) in only three hours. Charley caused unprecedented destruction in the Punta Gorda area, and inflicted major damage across the state of Florida. 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ...
B C D E F G H I 10 J K L M N O Categories: | | | | | | | ...
Official language(s) English Capital Tallahassee Largest city Jacksonville Area - Total - Width - Length - % water - Latitude - Longitude Ranked 22nd 170,451 km² 260 km 800 km 17. ...
The Saffir-Simpson Hurricane Scale is a scale classifying hurricanes by the intensity of their sustained winds, developed in 1969 by civil engineer Herbert Saffir and National Hurricane Center director Bob Simpson. ...
Miles per hour is a unit of speed, expressing the number of international miles covered per hour. ...
Punta Gorda is a city located in Charlotte County, Florida. ...
In 2005, the minimum central pressure of Hurricane Wilma dropped from 981 to 882 mbar in 24 hours, including an incredible drop of 53 mbar in under 6 hours. This is by far the fastest intensification of any Atlantic hurricane, and possibly the fastest intensification for any system in recorded history. Typhoon Forrest in 1983 may have strengthened faster, deepening from 976 to 876 mbar in just under 24 hours, but pressure estimates for this storm were much less accurate. [1] 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...
Hurricane Wilma, the most intense hurricane ever recorded in the Atlantic basin, devastated parts of the Yucatán Peninsula and southern Florida during October in the 2005 Atlantic hurricane season. ...
Eyewall of Forrest from a hurricane hunter plane. ...
1983 (MCMLXXXIII) was a common year starting on Saturday of the Gregorian calendar. ...
Explosive Intensification Explosive intensification is a more extreme case of rapid deepening that involves a tropical cyclone deepening at a rate of at least 2.5 mbar per hour for a minimum of 12 hours. Explosive intensification may occur only if conditions are near perfect, and therefore is rarely observed in the Western hemisphere. However, explosive intensification occurs regularly in the West Pacific basin. The area that experiences the most of this dangerous event is the coast of Australia; water temperatures there regularly attain 30+ degrees C during mid-season. The bar (symbol bar) and the millibar (symbol mbar, also mb) are units of pressure. ...
The geographical western hemisphere of Earth, highlighted in yellow. ...
References - ^ Landsea, Chris. "FAQ: Which tropical cyclone intensified the fastest?."
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