Season Summary
The 2008 hurricane season saw the first occurrence of major hurricanes in the months of July through November. Four storms formed before the start of August, and the season also had the earliest known date for three storms to be active on the same day: Hurricane Bertha, and Tropical Storms Cristobal and Dolly were all active on July 20. This season was also one of only nine Atlantic seasons on record to have a major hurricane form before August. This is also the first year four or more Category 4 storms have formed in a single year since 2005, which had 5, and was one of only 7 Atlantic seasons to feature a major hurricane in November.
The season was devastating for Haiti, where over 800 people were killed by four consecutive tropical cyclones (Fay, Gustav, Hanna, and Ike) in August and September. Hurricane Ike was the most destructive storm of the season, as well as the strongest, devastating Cuba as a major hurricane and later making landfall near Galveston, Texas at Category 2 (nearly Category 3) intensity. It caused a particularly devastating storm surge along the western Gulf Coast of the United States due to in part to its large size. Hurricane Hanna was the deadliest storm of the season, killing 537 people, mostly in Haiti. Hurricane Gustav was another very destructive storm, causing up to $6.61 billion in damage to Haiti, Jamaica, the Cayman Islands, Cuba, and the U.S. Hurricane Dolly caused up to $1.35 billion in damage to south Texas and northeastern Mexico. Hurricane Bertha was an early season Cape Verde-type hurricane that became the longest lived pre-August North Atlantic tropical cyclone on record, though it caused few deaths and only minor damage.
Other notable storms in the year included Tropical Storm Arthur, which marked the first recorded time the Atlantic saw a named storm form in May in consecutive years, Tropical Storm Fay, which became the first Atlantic tropical cyclone to make landfall in the same U.S. state on 4 separate occasions; Tropical Storm Marco, the smallest Atlantic tropical cyclone recorded since 1988, Hurricane Omar, a powerful late-season major hurricane which caused moderate damage to the ABC islands, Puerto Rico, and the Virgin Islands in mid-October; and Hurricane Paloma, which became the second strongest November hurricane in recorded history and caused about $900 million in damage to the Cayman Islands and Cuba. The only storm of the season to not reach tropical storm status, Tropical Depression Sixteen, caused significant flooding in Central America which killed more than 75 people and caused at least $150 million in damages.
Overall, the season's activity was reflected with a total cumulative accumulated cyclone energy (ACE) rating of 146. ACE is, broadly speaking, a measure of the power of the hurricane multiplied by the length of time it existed, so storms that last a long time, as well as particularly strong hurricanes, have high ACEs. ACE is only calculated for full advisories on tropical systems at or exceeding 34 knots (39 mph, 63 km/h) or tropical storm strength. Subtropical cyclones are excluded from the total.
Read more about this topic: Tropical Storm Nana (2008)
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