Hurricane Irene

Hurricane Irene

Category 3 major hurricane (SSHWS/NWS)
Hurricane Irene at peak intensity over the southern Bahamas on August 24
Formed	August 21, 2011
Dissipated	August 30, 2011
(Extratropical after August 28)
Highest winds	1-minute sustained: 120 mph (195 km/h)
Lowest pressure	942 mbar (hPa); 27.82 inHg
Fatalities	49 direct, 12 indirect
Damage	$16.6 billion (2011 USD)
Areas affected	Hispaniola, Lesser Antilles, Greater Antilles, Turks and Caicos, Bahamas, East Coast of the United States (Landfalls in North Carolina, New Jersey, New York, and Vermont), Atlantic Canada
Part of the 2011 Atlantic hurricane season

Hurricane Irene was a large and destructive tropical cyclone, which affected much of the Caribbean and East Coast of the United States during late August 2011. Irene is ranked as the seventh-costliest hurricane in United States history. The ninth named storm, first hurricane, and first major hurricane of the 2011 Atlantic hurricane season, Irene originated from a well-defined Atlantic tropical wave that began showing signs of organization east of the Lesser Antilles. Due to development of atmospheric convection and a closed center of circulation, the system was designated as Tropical Storm Irene on August 20, 2011. After intensifying, Irene made landfall in St. Croix as a strong tropical storm later that day. Early on August 21, the storm made a second landfall in Puerto Rico. While crossing the island, Irene strengthened into a Category 1 hurricane. The storm paralleled offshore of Hispaniola, continuing to slowly intensify in the process. Shortly before making four landfalls in the Bahamas, Irene peaked as a 120 mph (195 km/h) Category 3 hurricane.

Thereafter, the storm slowly leveled off in intensity as it struck the Bahamas and then curved northward after passing east of Grand Bahama. Continuing to weaken, Irene was downgraded to a Category 1 hurricane before making landfall on the Outer Banks of North Carolina on August 27, becoming the first hurricane to make landfall in the United States since Hurricane Ike in 2008. Early on the following day, the storm re-emerged into the Atlantic from southeastern Virginia. Although Irene remained a hurricane over water, it weakened to a tropical storm while making yet another landfall in the Little Egg Inlet in southeastern New Jersey on August 28. A few hours later, Irene made its ninth and final landfall in Brooklyn, New York City. Early on August 29, Irene transitioned into an extratropical cyclone hitting Vermont after remaining inland as a tropical cyclone for less than 12 hours.