Question: What hurricane was deadly and destructive, came ashore Louisiana in 2012, and caused severe flooding in Florida?

Context paragraphs:
Hurricane Celia: Hurricane Celia was the costliest tropical cyclone in Texas history until Hurricane Alicia in 1983.  The third named storm, second hurricane, and first major hurricane of the 1970 Atlantic hurricane season, Celia developed from a tropical wave in the western Caribbean Sea on July 31.  Initially, the depression tracked north-northwestward without significantly strengthening, and crossed over western Cuba on August 1.  Heavy rains on the island caused severe flooding, leading to five fatalities.  The depression entered the Gulf of Mexico and was upgraded to Tropical Storm Celia later on August 1.  Due to warm sea surface temperatures, Celia rapidly intensified into a Category 3 hurricane on the Saffir–Simpson hurricane wind scale on August 1.  Storm surge and swells lashed the west coast of Florida, especially the Panhandle, causing eight people to drown.  Early on August 2, Celia began to weaken.  However, the storm underwent rapid deepening again and peaked as a Category 3 hurricane with winds of 125 mph (205 km/h) on August 3.

Hurricane Isaac (2012): Hurricane Isaac was a deadly and destructive tropical cyclone that came ashore the U.S. state of Louisiana during August 2012.  The ninth named storm and fourth hurricane of the annual hurricane season, Isaac originated from a tropical wave that moved off the western coast of Africa on August 16.  Tracking generally west, a broad area of low pressure developed along the wave axis the following day, and the disturbance developed into a tropical depression early on August 21 while situated several hundred miles east of the Lesser Antilles.  Though the system intensified into a tropical storm shortly thereafter, high wind shear initially prevented much change in strength.

Hurricane Dennis (1981): Hurricane Dennis caused severe flooding in Miami-Dade County, Florida, in August 1981.  The tenth tropical cyclone and fourth named storm of the season, Dennis developed from a tropical wave well south of Cabo Verde on August 7.  The depression intensified into a tropical storm early the next day.  Dennis then encountered strong wind shear, causing the storm to weaken to a tropical depression on August 11.  After crossing the Windward Islands on August 12, Dennis degenerated into a tropical wave several hours later over the Caribbean Sea.  The wave became a tropical depression again late on August 15 while approaching Cuba.  Dennis reintensified into a tropical storm before landfall in Matanzas Province.  The cyclone emerged into the Straits of Florida on August 16, before striking the Florida Keys and then Monroe County early the next day.  It drifted across Florida, reaching the Atlantic near Cape Canaveral on August 19.  Dennis continued to intensify and made landfall near Emerald Isle, North Carolina, but moved east-northeastward and soon tracked offshore.  Late on August 20, Dennis deepened into a hurricane with winds of 80 mph (130 km/h), before weakening to a tropical storm over colder waters on August 21.  Dennis became extratropical northeast of Bermuda early on August 22 and persisted until being absorbed by a frontal system on August 26.

1827 North Carolina hurricane: The 1827 North Carolina hurricane caused severe impacts along its track through the northeastern Caribbean Sea and up the East Coast of the United States in late August 1827.  First observed over the Leeward Islands on August 17, the storm continued northwest, passing over Puerto Rico and the northern coastline of Hispaniola.  It moved through the Turks and Caicos Islands and then the Bahamas by August 21 and curved northward.  Although there is some discrepancy in its track, the hurricane moved ashore somewhere along the North Carolina coastline on August 25, perhaps at Category 4 intensity on the modern-day Saffir–Simpson hurricane wind scale.  The cyclone emerged back into the Atlantic Ocean around Norfolk, Virginia, and grazed the New England coastline before last being observed offshore Nova Scotia on August 28.  Along its track, numerous vessels were damaged, capsized, or run aground.  The combination of heavy rainfall and ferocious winds caused severe crop damage, damaged or destroyed structures, and snapped and uprooted trees.  Overall, the storm was responsible for more than six deaths and at least two injuries.

Effects of Hurricane Isaac in Florida: The Effects of Hurricane Isaac in Florida were severe local flooding in South Florida and tornadoes in the central and northern portions of the state in August 2012.  Hurricane Isaac formed from a tropical wave while located east of the Lesser Antilles on August 21, 2012.  The storm moved westward, crossed through the Leeward Islands, and entered the Caribbean Sea on August 22.  Isaac initially struggled to intensify and defied predictions of it strengthening into a hurricane.  The storm made its first landfall in Haiti as a midgrade tropical storm prior to making a second one in Cuba later that day.  It remained somewhat disorganized while moving through the Straits of Florida and passed near the Florida Keys on August 27.  The storm threatened to strike the Tampa Bay Area during the 2012 Republican National Convention and move ashore in the Florida Panhandle as a major hurricane.  However, it continued northwestward and avoided landfall in the state.  The storm finally became a hurricane late on August 28.  Isaac made two landfalls in Louisiana on August 29, the first near the mouth of the Mississippi River and the other near Port Fourchon.  The storm steadily weakened and eventually dissipated over Missouri on September 1.

Hurricane Debra (1959): Hurricane Debra was a destructive tropical cyclone that developed during the 1959 Atlantic hurricane season.  The fifth tropical storm and third hurricane of the season, Debra originated from the interaction of a cold-core low and a tropical wave on July 15.  The system was designated a tropical depression on July 23 when it was south of Louisiana and meandered westward while it swiftly intensified into a tropical storm along the Gulf Coast of the United States.  A turn towards the northwest became evident as it attained Category 1 hurricane status on the Saffir–Simpson Hurricane Scale the following day while it organized into a developed storm.  As the hurricane curved northward at a slow forward speed, strength was maintained as it approached the coast of Texas as a minimal hurricane.  It came ashore during the evening of July 24 local time (0000 UTC on July 25) between Freeport and Galveston, Texas.  It rapidly weakened into a tropical storm and later a depression as it moved inland, and dissipated on July 28 while it turned northwestward.  The remnant moisture later sparked upper-level thunderstorms in late July and early August.

1815 North Carolina hurricane: The 1815 North Carolina hurricane caused the most severe flooding in New Bern, North Carolina since 1795.  First detected east of the Lesser Antilles on 26 August, the disturbance drifted toward the northwestern Leeward Islands, arriving by 29 August.  The hurricane soon approached Charleston, South Carolina, on 1 September, and subsequently made landfall near Cape Lookout in North Carolina on 3 September.  The gale reached New England by 5 September, departing the region on 6 September.  The hurricane caused significant impact even before coming ashore: many vessels were damaged, grounded, capsized, or destroyed offshore throughout the course of the storm.  Extensive damage to corn, cotton, and rice crops was also noted.  Flood waters brought rivers as much as 8 ft above normal, inundating streets and structures.  Overall, the hurricane inflicted at least 15 deaths throughout its existence, and more than $60,000 (1815 USD) in property damage.

1989 Atlantic hurricane season: The 1989 Atlantic hurricane season featured the costliest tropical cyclone in the Atlantic basin at the time, Hurricane Hugo.  The season officially began on June 1, and ended on November 30.  It was a near average season with 11 named storms.  The first storm, Tropical Depression One, developed on June 15, and dissipated two days later without effects on land.  Later that month, Tropical Storm Allison caused severe flooding, especially in Texas and Louisiana.  Tropical Storm Barry, Tropical Depressions Six, Nine, and Thirteen, and Hurricanes Erin and Felix caused negligible impact.  Hurricane Gabrielle and Tropical Storm Iris caused light effects on land, with the former resulting in nine fatalities from rip currents offshore the East Coast of the United States and Atlantic Canada, while the latter produced minor flooding in the United States Virgin Islands.

1967 Atlantic hurricane season: The 1967 Atlantic hurricane season featured the bulk of its activity in September and October, although weaker tropical depressions were observed from June to October.  It was the first Atlantic hurricane season to be included in the satellite era.  The first depression originated on June 10, and the final storm – Heidi – lost tropical characteristics on October 31.  Hurricane Beulah – the strongest storm of the season – was also the most damaging, causing 59 deaths and $207 million in damage (1967 USD) along its 16-day path.  Beulah formed on September 5 and soon after crossed southern Martinique into the Caribbean Sea.  On the island, it dropped 475 mm of rainfall in Les Anses-d'Arlet, causing severe flooding.  Widespread evacuations occurred along the southern coast of the Dominican Republic due to fears of a repeat of Hurricane Inez from the previous year.  After brushing the south coast of Hispaniola, the hurricane weakened and re-intensified, striking the Yucatán Peninsula and later near the United States/Mexico border.  There, it caused severe river flooding, killing 34 people in the two countries.

Tropical Storm Jerry (1995): Tropical Storm Jerry was a tropical storm that caused severe flooding throughout the southeast United States in August of the 1995 Atlantic hurricane season.  Jerry, the tenth tropical storm of the season, formed from a tropical wave that moved off the African coast in early August, which organized into a tropical depression and tropical storm between the Bahamas and Florida later in the month, before striking Florida in the latter part of the month.  Its remnant circulation persisted until five days after landfall.  The rainfall it produced, amounting to over 12 in in several locations across Florida, Georgia, and South Carolina, was responsible for $40 million (2005 USD) in damage and 6 deaths.  At the time, Jerry was the earliest tenth storm to form in a season on record, until Jose in the 2005 season overtook it.  Tropical Storm Jerry was also the first tropical cyclone to make landfall in South Florida since Hurricane Andrew in 1992.

Supporting paragraphs: Effects of Hurricane Isaac in Florida Hurricane Isaac (2012)
Answer: Hurricane Isaac