"For most of the season, sea surface temperatures were running above normal which helped produce the high number of storms and also the absence of an El Nino which helps to mitigate the storms". This season is one of only six years on record to include multiple Category 5 hurricanes.
A lake is hit by Hurricane Irma in Pembroke Pines, Florida on Sunday.
The 2017 hurricane season will be remembered for its brutality and endurance, but also goes down in history as having the most accurate storm track forecasts since modern mapping of tropical cyclones began almost 50 years ago.
Future updates continued to increase levels of activity predicted in 2017, calling for 15 named storms, eight hurricanes and three major hurricanes on July 5, and 16 named storms, eight hurricanes and three major hurricanes on August 4.
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An "extremely active" season also has to meet two out of these three conditions: 13 or more named storms, seven or more hurricanes, and three or more major hurricanes.
The Atlantic saw a record 10 consecutive hurricanes this season - tying a record set in 1893.
The term rapid intensification was often used this season.
Irma's maximum sustained wind speed of 185 miles per hour made it the strongest storm that's ever existed in the Atlantic, outside the Caribbean and Gulf of Mexico.
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The National Christmas Tree will be lit during a ceremony that starts at 5 p.m. on Thursday, Nov. 30, at the White House. New this year are wreaths hanging from the exterior of every window.
The three major hurricanes that made landfall were Harvey in Texas, Irma in the Caribbean and southeastern USA, and Maria in the Caribbean and Puerto Rico.
It was the first Category 4 hurricane to make landfall in Florida since hurricane Charlie 2004.
Category 4 Harvey, the first major hurricane to hit the USA mainland since 2004, set a new US record for rainfall (60.5 inches near Nederland, Texas), the Miami Herald reported.
"From a scientific perspective, the barometric pressure from both Irma and Maria were the lowest ever recorded; as 915 and 908 millibars, respectively".
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We're only really starting to feel the effects now, since your average tree takes about 10 years to grow. We're told MSChristmasTrees.com provides a guide to the types of Christmas trees grown in the state.
Ophelia, which at one point was a Category 3 hurricane, weakened as it moved northeast and reached Ireland as a post-tropical storm, where three deaths were attributed to the storm. Within the same day as landfall, Harvey became a tropical storm, but it was caught between two high-pressure systems which locked Harvey for days over southeast Texas as a tropical storm, still near the coast enough to feed off the warm waters, but with hardly any movement.
Harvey will be most remembered for its unprecedented 60 inches of rain in Southeast Texas, the most of any storm recorded in USA history, and the catastrophic flooding that resulted. Therefore, the intensity forecasts are improving more slowly than track forecasts.
At its strongest, Maria's winds reached 175 miles per hour.
Irma destroyed 95 percent of Barbuda and St. Martin, killed a total of 134 people. Local governments have seen staggering costs for recovery, with estimates placing the price of picking up the 3 million cubic yards of debris left by Irma in Lee County alone at around $65 million.
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Agonisingly for Spurs, Llorente should have drawn the visitors level when he flicked wide from Serge Aurier's teasing cross. Vardy met Marc Albrighton's left-wing cross with a volleyed lob in the 13th minute, leaving goalkeeper Hugo Lloris stranded.