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Posts tagged hurricanes
Tropical Cyclones (Atlantic Ocean – Global Warming Effects: Frequency, The Past Century) — Summary
via CO2Science.com
Have tropical storms and hurricanes of the Atlantic Ocean become more numerous over the past century, in response to what climate alarmists describe as unprecedented global warming? In an early attempt to answer this question, Bove et al. (1998)examined the characteristics of all recorded landfalling U.S. Gulf Coast hurricanes — defined as those whose eyes made landfall between Cape Sable, Florida and Brownsville, Texas — from 1896 to 1995. In doing so, they found that the first half of this period saw considerably more hurricanes than the last half: 11.8 per decade vs. 9.4 per decade, while the same was true for intense hurricanes of category 3 or more on the Saffir-Simpson storm scale: 4.8 vs. 3.6. In fact, the numbers of all hurricanes and the numbers of intense hurricanes both tended downward from 1966 to the end of the period investigated, with the decade 1986-1995 exhibiting the fewest intense hurricanes of the entire century. The three researchers concluded that “fears of increased hurricane activity in the Gulf of Mexico are premature.”
Noting that the 1995 Atlantic hurricane season was one of near-record tropical storm and hurricane activity, but that during the preceding four years (1991-94) such activity over the Atlantic basin was the lowest since the keeping of reliable records began in the mid-1940s, Landsea et al. (1998) studied the meteorological characteristics of the two periods to determine what might have caused the remarkable upswing in storm activity in 1995. In doing so, they found that “perhaps the primary factor for the increased hurricane activity during 1995 can be attributed to a favorable large-scale pattern of extremely low vertical wind shear throughout the main development region.” They also noted that “in addition to changes in the large-scale flow fields, the enhanced Atlantic hurricane activity has also been linked to below-normal sea level pressure, abnormally warm ocean waters, and very humid values of total precipitable water.” (more…)
NOAA Revisits Historic Hurricanes
via NOAA.gov /
Highlights:
1. Busiest Hurricane Season Ever for the U.S.: The 1886 hurricane season has been analyzed to be the busiest on record for the continental United States. Seven hurricanes were recorded to have hit the U.S.: a Saffir- Simpson Hurricane Scale Category 2 hurricane into Texas and Louisiana in June, two Category 2 hurricanes into northwest Florida in June, a Category 1 hurricane into northwest Florida in July, the Category 4 “Indianola” hurricane into Texas in August, a Category 1 hurricane into Texas in September, and a Category 3 hurricane into Louisiana in October. The previous busiest hurricane season for the United States was 1985 with six landfalling hurricanes.
2. Extremely busy Decade for the U.S. Atlantic seaboard: The 1890s were one of the busiest decades on record for the Atlantic seaboard of the United States. Four major hurricanes impacted the coast from Georgia northward – the 1893 Category 3 “Sea Islands Hurricane” in Georgia and South Carolina, another 1893 Category 3 in South Carolina and North Carolina, an 1898 Category 4 in Georgia, and a 1899 Category 3 in North Carolina. Only the decade of the 1950s had more strong hurricanes making landfall along this part of the coast, going back to 1851 when reliable records began. (more…)
