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|Category 1 hurricane (SSHWS)|
|Duration||August 21 – September 1|
|Peak intensity||80 mph (130 km/h) (1-min) 965 mbar (hPa)|
Hurricane Isaac was a deadly and destructive Hurricane during the active 2012 Atlantic Hurricane Season. Isaac was the Ninth named storm and fourth Hurricane. Isaac affected many places: Hispaniola, Cuba, Florida, and Louisiana. Isaac was a Category 1 Hurricane. However, Isaac was a large system, and brought in a lot of storm surge. Isaac was the first Louisiana hurricane landfall since Hurricane Gustav of 2008, and the first Tropical Cyclone to landfall since Tropical Storm Lee the previous year.
Along with this Isaac was the last hurricane to hit Louisiana as of 2016, as well as the last Tropical Cyclone in general. Tropical Storm Karen of 2013 threatened to landfall in the state as a Hurricane, but it dissipated in the Gulf of Mexico, a rare occurrence. Isaac killed 41 people and cost 2.39 Billion dollars in damage. Isaac caused some rather large storm surge for a Category One Hurricane and it also caused large amounts of rain in all locations it impacted.
Despite the loss of life and damage Isaac caused, Isaac was not retired in the spring of 2013 and will be used again in 2018, which surprised some. When Isaac was extratropical it brought more flooding to the midwestern United States with some 10 inches in Arkansas. It also brought as much as 20 inches in Louisiana and Mississippi, while as much as a foot was reported in Alabama. However the flooding was no where near as bad as the 2016 Louisiana Floods. Some 34 Tornadoes touched down due to Isaac, with the strongest being EF2's. Despite being the state Isaac landfalled in, Louisiana reported no tornadoes.
A tropical wave that would eventually become Isaac crossed western Africa on August 15 and August 16. On August 17, it had more convection, so the National Hurricane Center began monitoring the wave. Organization halted on August 18, but it was becoming more concentrated. The next day, the NHC gave the system a high chance of development. It developed more over two days, and on August 21, the first advisory on Tropical Depression Nine was issued. It was 715 Miles West of the Leeward Islands, and was moving west straight towards the islands due to a ridge. There was northeasterly wind shear, but other than that, conditions were favorable for development of Nine.
Later that same day, Hurricane Hunters Reconnaissance Aircraft discovered Tropical Storm Force winds. The NHC then issued an advisory on Tropical Storm Isaac. Isaac wasn't very organized, however. On August 22, Isaac was encountering dry air. It passed south of Guadeloupe. Nevertheless the dry air, Isaac was starting to strengthen, and become better organized. The circulation was definitely more organized, and on August 25, attained winds of 70 mph, almost hurricane force, and moved over Hati. Land interaction weakened Isaac, and disrupted its circulation. It brought heavy rain and wind to the island of Hispaniola, killing 29 on the island (Hati and Dominican Republic) alone. It then moved northwest along the northern coast of Cuba, bringing fringe effects there. No one in Cuba was killed by Isaac. It passed through the straits of Florida, and strengthening began again. As it moved passed Florida, it's outer bands passed through, causing heavy rain, wind, and tornadoes. 2 people were killed indirectly by Isaac. As it moved out into the Gulf of Mexico, it strengthened. On August 28, at about 11 AM CST, Isaac was declared a hurricane as it was approaching the state of Louisiana.
Isaac was approaching the state close to anniversary of Hurricane Katrinas landfall.
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