These names will show up for the first time in 2023, when the 2017 list will be re-used.
Out with the old, in with the new: storm names Harvey, Irma, Maria and Nate are retired given how costly and deadly they were in 2017. In 2005, five storm names, including Katrina, were retired - the most for a single season.
The new names? Harold, Idalia, Margot, and Nigel.
Atlantic hurricane and tropical storm name lists repeat every six years with male and female names alternating alphabetically.
"I"-name storms tend to coincide near the average peak of the hurricane season".
Just weeks later after scouring the Caribbean, Hurricane Irma made landfall in Key West, Florida, and then Marco Island in September.
While 2017's season proved to be devastating, forecasts from Colorado State University's Tropical Meteorology Project expect that the 2018 season will only be slightly less disastrous as the group have stated a total of 14 named storms, seven hurricanes and three major ones are likely to occur.
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They were the monsters of the hurricane season from hell. With damage of $126 billion, it's the second-costliest hurricane in US history, behind Katrina.
Irma - a Category 5 storm, the strongest designation, wrecked havoc on Caribbean islands; Barbuda was nearly completely destroyed. Names are only retired under these circumstances when using it again would be seen as insensitive. How will these storms be named?
Irma caused seven direct deaths in the USA and 85 indirect deaths, 80 of which were in Florida, according to the WMO.
Hurricane Nate didn't make landfall in the USA but slammed into Nicaragua and Panama as a Category 1, causing 44 deaths. Maria caused 31 direct deaths with 34 missing in Dominica, and two direct deaths in Guadeloupe.
But it was rain from the storm that caused at least 45 deaths in Central America.
Four retired hurricane names in one season is remarkable, but not a record.