No. Hurricane Katrina dissipated in 2005 and will never return. Hurricane Sandy occurred seven years after Katrina and is a completely different storm.
No. Hurricane Katrina is still by far the most destructive hurricane in U.S. history and one of the deadliest. Hurricane Sandy is the second most destructive on record.
The short answer is... millions.
Hurricane Katrina and Hurricane Sandy are similar in that they were very large, very destructive Atlantic hurricanes that hit the U.S. However, there is no real link between the storms.
Hurricane Katrina was far worse than Ike. Compare the statistics: Hurricane Katrina killed 1,836 people and caused $105 billion in damage. Hurricane Ike killed 103 and caused $37 billion in damage.
No. While Sandy is likely going to be a very destructive hurricanes. Other storms such as Katrina have been far worse.
Hurricane Sandy affected Jamaica, Cuba, Haiti, the Dominican Republic, The Bahamas, the United States, and Canada.
Both Hurricane Sandy and Hurricane Katrina were extremely large, destructive hurricanes that struck the United States, causing massive flooding. At over $100 billion Hurricane Katrina is the costliest hurricane in U.s. history with Sandy coming in second place at about $50 billion. Both produced very high storm surges, with Sandy's peaking at 13-14 feet and Katrina's peaking at 28 feet. Both essentially shut down major cities, with Sandy shutting down New York City and Katrina shutting down New Orleans, though for much longer and under much worse conditions. Both were also part of abnormally active hurricane seasons.
Hurricane Katrina was the most expensive hurricane in terms of destruction, and it was certainly among the worst natural disasters to hit the USA since 1900. About 1800 residents of New Orleans and the Gulf Coast died, either directly or indirectly as a result of Katrina. However, Katrina was not the worst in terms of number of deaths. The Galveston Hurricane of 1900 killed an estimated 6,000 to 12,000 people, while the 1928 Okeechobee Hurricane, killed around 2,500.
Similarities:Both Katrina and Sandy were extremely destructive Atlantic hurricanes. They were the costliest and second costliest hurricanes in U.S. history with Price tags of $105 billion and $50 billion respectively.Both formed during very active hurricane seasons.Both were extremely large hurricanes, causing high storm surges and very widespread damage.Both flooded and shut down major U.S. cities; Katrina hit New Orleans and Sandy shut down New York City, though for a much shorter time.Both storms ultimately merged with other systems.Differences:Hurricane Katrina was far more intense than Sandy, peaking as a category 5 storm with 175 mph winds and striking the U.S. as a category 3. Sandy was a category 2 storm at peak strength with 110 mph winds, and hit the U.S. at category 1 intensity.Katrina was a hurricane in every sense of the word at landfall in the U.S. with full tropical characteristics. Sandy was a post-tropical cyclone at landfall in the U.S. and so was technically no longer a hurricane.Hurricane Katrina started on a westward path, hitting Florida and then turning north to hit the U.S. Gulf coast, a similar path to that taken by numerous Atlantic hurricanes. Hurricane Sandy started on a northward path, before making an unprecedented westward turn to hit the U.S. east coast.Hurricane Katrina's damage was almost exclusively in the United States while Sandy caused significant damage and several dozen deaths in the Caribbean.Hurricane Katrina was far deadlier than Sandy, killing more than 1,800 people. Hurricane Sandy killed just over 200 people.
Similarities:Both Katrina and Sandy were extremely destructive Atlantic hurricanes. They were the costliest and second costliest hurricanes in U.S. history with Price tags of $105 billion and $50 billion respectively.Both formed during very active hurricane seasons.Both were extremely large hurricanes, causing high storm surges and very widespread damage.Both flooded and shut down major U.S. cities; Katrina hit New Orleans and Sandy shut down New York City, though for a much shorter time.Both storms ultimately merged with other systems.Differences:Hurricane Katrina was far more intense than Sandy, peaking as a category 5 storm with 175 mph winds and striking the U.S. as a category 3. Sandy was a category 2 storm at peak strength with 110 mph winds, and hit the U.S. at category 1 intensity.Katrina was a hurricane in every sense of the word at landfall in the U.S. with full tropical characteristics. Sandy was a post-tropical cyclone at landfall in the U.S. and so was technically no longer a hurricane.Hurricane Katrina started on a westward path, hitting Florida and then turning north to hit the U.S. Gulf coast, a similar path to that taken by numerous Atlantic hurricanes. Hurricane Sandy started on a northward path, before making an unprecedented westward turn to hit the U.S. east coast.Hurricane Katrina's damage was almost exclusively in the United States while Sandy caused significant damage and several dozen deaths in the Caribbean.Hurricane Katrina was far deadlier than Sandy, killing more than 1,800 people. Hurricane Sandy killed just over 200 people.
Damage from Hurricane Sandy is estimated to cost $65 billion. As far as Atlantic hurricanes go, this makes Sandy's price tag second only to that of Hurricane Katrina.