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Hurricane Catarina was an extraordinarily rare hurricane-strength tropical cyclone, forming in the southern Atlantic Ocean in March 2004. [13] Just after becoming a hurricane, it hit the southern coast of Brazil in the state of Santa Catarina on the evening of 28 March, with winds up to 140 kilometres per hour (87 mph) making it a Category 1 ...
A tropical cyclone is the generic term for a warm-cored, non-frontal synoptic-scale low-pressure system over tropical or subtropical waters around the world. [4] [5] The systems generally have a well-defined center which is surrounded by deep atmospheric convection and a closed wind circulation at the surface. [4]
Twenty nations took part in the GATE research project in 1974, where Douglas DC-6 aircraft examined tropical waves which spawned Cape Verde hurricanes. [3] In 2006, there was a two-month research project known as NAMMA-06 (short for NASA African Monsoon Multidisciplinary Activities) [4] which flew Douglas DC-8s into seedling disturbances in the eastern Atlantic which had the potential to ...
A high-pressure area, high, or anticyclone, is an area near the surface of a planet where the atmospheric pressure is greater than the pressure in the surrounding regions. Highs are middle-scale meteorological features that result from interplays between the relatively larger-scale dynamics of an entire planet's atmospheric circulation .
There is no time of year more likely for a tropical system to be spinning in the Atlantic than Sept. 10, which is the climatological peak of the Atlantic Hurricane Season. Around 50% of all ...
Storms that form over the Atlantic Ocean or central and eastern North Pacific are called "hurricanes" when their wind speeds reach at least 74 miles per hour (119 kilometers per hour). Up to that ...
Winds circle anti-clockwise around lows in the northern hemisphere, and clockwise in the southern hemisphere, due to opposing Coriolis forces. Low-pressure systems form under areas of wind divergence that occur in the upper levels of the atmosphere (aloft). The formation process of a low-pressure area is known as cyclogenesis.
Hurricane Michael made landfall near Mexico Beach, Florida, on Oct. 10, 2018. The change of seasons from summer to autumn across North America is notable for crisp air, colorful fall foliage and ...