Hurricane season is now underway: What experts say is in store
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WATCH: Forecasters predict five to nine storms could become hurricanes and up to four of them are expected to be major.

Hurricane season is now underway, and scientists from the National Oceanic and Atmospheric Administration are predicting a near normal or above normal Atlantic hurricane season this year.

The forecasters predict a 70 percent likelihood of 10 to 16 named storms with winds of 39 mph or higher.

Of those named storms, the forecasters predict five to nine could become hurricanes, including one to four major ones.

This satellite image obtained from the National Oceanic and Atmospheric Administration shows Hurricane Maria, Sept. 19, 2017.

Hurricanes have winds of 74 mph or higher and major hurricanes are considered to be at least Category 3.

An average hurricane season brings 12 named storms, of which six become hurricanes.

When is hurricane season?

Hurricane season is from June 1 to Nov. 30. Peak hurricane season is from mid-August through mid-October and the peak date for hurricane season on average is Sept. 10.

NOAA will update this year's outlook in early August, just before peak season.

A car gets towed while men walk in the flooded waters of Telephone Rd. in Houston, Texas on Aug. 30, 2017.

How do hurricanes form?

A group of thunderstorms will feed off the warmth and moisture of the ocean. Air then rises to form more storms and is replaced constantly by the surrounding air.

Men use ropes to pull away the debris of houses in order to look for bodies, after the Galveston Hurricane of 1900. The Category 4 storm with winds in excess of 130mph and a storm surge of over 15 feet, was the... Photo Credit: Library of Congress/Corbis/VCG via Getty Images
Homes in Cameron, Louisiana, lie in ruins in the wake of Hurricane Audrey, July 1, 1957. As far at 25 miles inland were inundated with storm surge of 8 to 12 feet, and leaving 390 dead. Photo Credit: Beaumont Enterprise/AP Photo
U.S. Highway 90 at Biloxi went under several feet of water as powerful Hurricane Betsy slammed into the mainland, Sept. 10, 1965. At left in the background, a National Guard truck makes its way through the wate... Photo Credit: AP Photo
Father William Pittman, left, conducts an outdoor Mass outside the ruins of St. Thomas Catholic Church at Long Beach, Mississippi, Aug. 24, 1969, just one week after Hurricane Camille took a heavy toll on the M... Photo Credit: Jack Thornell/AP Photo
Pennsylvania Gov. Milton Shapp, front right, in Harrisburg, Pennsylvania, surveys the damage. He and his wife Muriel evacuated earlier from the governor's mansion after Hurricane Agnes flooded the area, June 23... Photo Credit: Patriot News/AP Photo
Kitty Hicks salvages a few items from her home in Hemby Bridge, Nort Carolina, Sept. 29, 1989. The house was destroyed by a tree during Hurricane Hugo. The Category 4 hurricane made landfall just north of Charl... Photo Credit: Davie Hinshaw/Charlotte Observer/AP Photo
Homes were reduced to piles of rubble following Hurricane Andrew in 1992. Wind-recording instruments were destroyed in the peak areas, and others recorded gust of up to 177 mph, making it one of the most inten... Photo Credit: Steve Starr/Corbis, via Getty Images
Charles Summers, resident of Oak Island in the coast of North Carolina near Wilmington, walks next to a house that was destroyed by strong winds and the rising surf produced when Hurricane Floyd touched down a ... Photo Credit: Roberto Schmidt/AFP/Getty Images
The surf pounds a mobile home park sitting on the Indian River at Jensen Beach, Florida, as Hurricane Frances moves through the area, Sept. 4, 2004. Though only a Category 2 storm when it made landfall near Stu... Photo Credit: J. Albert Diaz/Miami Herald, via AP Photo
An aerial view of wrecked homes in Punta Gorda, Florida, after Hurricane Charley battered the town with 145 mph winds, Aug. 13, 2004. What started as a tropical wave, grew into a hurricane with strengthened int... Photo Credit: John Roca/NY Daily News Archive via Getty Images
Water spills over a levee along the Inner Harbor Navigational Canal in the aftermath of Hurricane Katrina, Aug. 30, 2005 in New Orleans. Storm surge flooding of 25 to 28 feet above normal in Mississippi and 10 ... Photo Credit: Vincent Laforet-Pool/AFP/Getty Images
Evelyn Turner cries alongside the body of her longtime companion, Xavier Bowie, after he died in New Orleans, Aug. 30, 2005. Bowie and Turner had decided to ride out Hurricane Katrina when they could not find a... Photo Credit: Eric Gay/Associated Press
A road collapsed following Hurricane Ike, Sept. 15, 2008, in Galveston, Texas. The storm produced tropical-storm-force winds extending 275 miles and made landfall as a Category 2 hurricane in Texas and then con... Photo Credit: Scott Olson/Getty Images
Homes in the Rockaway neighborhood were damaged during Hurricane Sandy, Oct. 31, 2012, in the Queens borough of New York. The tropical cyclone merged with another system creating an extra-tropical cyclone, thus... Photo Credit: Spencer Platt/Getty Images
A roller coaster sits in the Atlantic Ocean after the Fun Town pier it sat on was destroyed by Superstorm Sandy, Nov. 1, 2012, in Seaside Heights, New Jersey. Photo Credit: Mark Wilson/Getty Images
Branches litter an alley as a result of Hurricane Irene, Aug. 28, 2011, in Virginia Beach, Virginia. The Category 1 hurricane struck the Outer Banks in North Carolina first, weakened, struck New Jersey and the... Photo Credit: Brendan Hoffman/Getty Images
Rescue boats fill a flooded street as people are evacuated from rising water after Hurricane Harvey, Aug. 28, 2017, in Houston. Making landfall in Texas on Aug. 25, Harvey was the first major hurricane to hit t... Photo Credit: David J. Phillip/AP
Floodwaters from Hurricane Irma recede, Sept. 13, 2017, in Middleburg, Fla. A Category 4 hurricane, Irma became the first hurricane to make touch land in Florida since 2004. Due to the amount of damage caused, ... Photo Credit: Sean Rayford/Getty Images
An aerial view shows the flooded neighborhood of Juana Matos in the aftermath of Hurricane Maria in Catano, Puerto Rico, Sept. 22, 2017. The storm has left 97% of the island's 3.4 million residents without elec... Photo Credit: Ricardo Arduengo/AFP/Getty Images

Below all this air rising, low pressure develops.

The storm will keep growing as long as it has three key ingredients: 1. Water temperatures at or above 79 degrees; 2. Open water; 3. High pressure above the storm.

The combination of high wind speeds inside the storm, the storm's forward motion and the storm surge can lead to a disastrous hurricane.

What are the hurricane categories?

Category 1: Winds from 74 to 95 mph, which can damage homes, trees and power lines.

A girl rests her head on a set of towels supplied by the American Red Cross at a makeshift shelter, after arriving in San Juan, Puerto Rico, Sept. 14, 2017, on a cruise ship with families evacuated from Caribbe... Photo Credit: Ricardo Arduengo/AP
Cots are set up in a convention center transformed into a shelter for victims of Hurricane Irma, in San Juan, Puerto Rico, Sept. 14, 2017. The U.S. territory of Puerto Rico has received nearly 2,000 U.S. citize... Photo Credit: Ricardo Arduengo/AP
Mud deposited by the storm surge created by Hurricane Irma cakes the floor of Robert and Nancy Heater's home, Sept. 14, 2017, near Big Pine Key, Florida. Photo Credit: Chip Somodevilla/Getty Images
A man prays at a relief distribution point in a rural migrant-worker town waiting for emergency donations following Hurricane Irma, Sept. 14, 2017, in Immokalee, Florida. Photo Credit: Spencer Platt/Getty Images
Damaged homes and motor homes in the Sunshine Key after Hurricane Irma, Sept. 14, 2017, in Marathon, Fla. Photo Credit: Mike Stocker/SF Sun Sentinel/Polaris
A boat is seen next to a home after Hurricane Irma passed through the area, Sept. 13, 2017, in Duck Key, Florida. Photo Credit: Joe Raedle/Getty Images
Christy Velasquez surveys the damage to her home done by Hurricane Irma, Sept. 13, 2017, in Big Pine Key, Florida. Photo Credit: Chip Somodevilla/Getty Images
A destroyed mobile home park in Cudjoe Key, Florida, Sept. 13, 2017.

Photo Credit: Timothy Fadek/Redux for ABC News

Cars wait in line for gas as a station opens for the first time since Hurricane Irma passed through in Miromar Lakes, Fla., Sept. 13, 2017. Photo Credit: David Goldman/AP
A woman shops in a supermarket, one of the few open, with limited electricity three days after Hurricane Irma swept through the area, Sept. 13, 2017, in Naples, Fla. Photo Credit: Spencer Platt/Getty Images
A destroyed marina is pictured in an aerial photo in the Keys in Marathon, Fla., Sept. 13, 2017. Photo Credit: Carlo Allegri/Reuters
People wait in line for generators three days after Hurricane Irma swept through the area, Sept. 13, 2017, in Naples, Fla. Photo Credit: Spencer Platt/Getty Images
Reynaldo Martinez surveys the debris deposited in his backyard after Hurricane Irma struck the Florida Keys in Marathon, Fla., Sept. 12, 2017. Photo Credit: Erik S. Lesser/EPA
Homes are destroyed after Hurricane Irma struck the Florida Keys in Marathon, Fla., Sept. 12, 2017. Photo Credit: Erik S. Lesser/EPA
Amy Seiler, left, manager of the Driftwood Trailer Park, hugs resident Sergio Gregorio after surveying the damage at the trailer park, Sept. 12, 2017, in Tavernier, Fla. Photo Credit: Wilfredo Lee/AP
Boats blown from their docks sit in the marsh after Hurricane Irma on Tuesday, Sept. 12, 2017, at St. Marys on the Georgia coast. Photo Credit: Curtis Compton/Atlanta Journal-Constitution via AP
The Monroe County Sheriff's Office released this image of a fatal accident discovered by first responders who were patrolling on Marathon Key during a lull in Hurricane Irma, Sept. 9, 2017. Photo Credit: MCSO-Florida Keys/Facebook
Damage to a mobile home community can be seen in the Lower Florida Keys after Hurricane Irma struck the state, Sept. 12, 2017. Photo Credit: Jack Gruber/USA TODAY
Jose Lopez sits outside his flooded home while retrieving belongings in the aftermath of Hurricane Irma in Bonita Springs, Fla., Sept. 12, 2017. Photo Credit: David Goldman/AP
French President Emmanuel Macron shakes hands with residents during a visit to the French Caribbean island of St. Martin on Sept. 12, 2017. Photo Credit: Christophe Ena/AFP/Getty Images
Debris from docks that were shredded and boats that were sunk litter the shoreline after Hurricane Irma on Sept. 12, 2017, at St. Marys on the Georgia coast. Photo Credit: Curtis Compton/Atlanta Journal-Constitution via AP
Arborist Paul Mysliwiec climbs a tree that fell during Hurricane Irma in St. Petersburg, Fla., Sept. 12, 2017. Photo Credit: Eve Edelheit/The Tampa Bay Times via AP
A family arrives at their house, which was flooded after the passing of Hurricane Irma in Immokalee, Fla., Sept. 12, 2017. Photo Credit: Stephen Yang/Reuters
Alfonso Jose pulls his son Alfonso Jr., 2, in a cooler with his wife Cristina Ventura as they wade through their flooded street to reach an open convenience store in the wake of Hurricane Irma in Bonita Springs... Photo Credit: David Goldman/AP
The buildings of a holiday resort around a pool in the Baie Nettle area of Marigot on Saint Martin island on Sept. 12, 2017, after it was devastated by Hurricane Irma. Photo Credit: Martin Bureau/AFP/Getty Images
A woman shops in a supermarket, one of the few open, with limited electricity and food two days after Hurricane Irma swept through the area on Sept. 12, 2017 in Naples, Fla. Photo Credit: Spencer Platt/Getty Images
Mark Robinson, left, and Karl Starling remove a downed tree in Starling's yard after Hurricane Irma in Jacksonville, Fla., Sept. 11, 2017. Photo Credit: Johnny Milano/The New York Times via Redux
Alice Barber walks through her damaged trailer home in the aftermath of Hurricane Irma in Immokalee, Fla., Sept. 11, 2017. Photo Credit: MArcus Yam/Los Angeles Times via Polaris
A destroyed home stands in a heavily damaged rural community in rural Naples two days after Hurricane Irma swept through the area, Sept. 12, 2017, in Naples, Fla. Hurricane Irma made another landfall near Naple... Photo Credit: Spencer Platt/Getty Images
A destroyed trailer park is seen after Hurricane Irma strikes Florida, in Plantation Key, in the Florida Keys, Sept. 12, 2017. Photo Credit: Carlos Barria/Reuters
Two retirees ride tricycles through a flooded street at the Enchanted Shores manufactured home park in Naples, Fla., Sept. 11, 2017, after Hurricane Irma hit Florida. Photo Credit: Nicholas Kamm/AFP/Getty Images
Boats wrecked by Hurricane Irma are seen from a plane in Sint Maarten, Netherlands, Sept. 11, 2017. Photo Credit: Alvin Baez/Reuters
Locals affected by Hurricane Irma line up to collect drinking water in Isabela de Sagua, Cuba, Sept. 11, 2017. The powerful storm ripped roofs off houses, collapsed buildings and flooded hundreds of thousands o... Photo Credit: Ramon Espinosa/AP
Storm damage is seen from the air after hurricane Irma passed Tortola, in the British Virgin Islands, Sept. 11, 2017. Photo Credit: Captain George Eatwell RM/Ministry of Defense handout via Reuters
Craig Lash, with Wild Dunes resort security, inspects damage done to a house after Tropical Storm Irma hit the Isle of Palms, S.C., Sept. 11, 2017. Photo Credit: Mic Smith/AP
Life jackets from the remains of the old Cumberland Queen Ferry, which sank, are part of the debris littering the flooded main street after Hurricane Irma swept through, Sept. 11, 2017, in St. Mary's, Ga. Photo Credit: Curtis Compton/Atlanta Journal-Constitution via AP
A woman photographs boats washed onto land by Hurricane Irma at a marina in Miami, Fla., Sept. 11, 2017. Photo Credit: Saul Loeb/AFP/Getty Images
Gov. Rick Scott looks out the window of a C-130 as he looks at damage to the Florida Keys during the aftermath of Hurricane Irma, Sept. 11, 2017. Photo Credit: Jesse Romimora/Governor's Press Office, via AP
People line up at a 7-Eleven convenience store in Naples, Fla. on Sept. 11, 2017 after Hurricane Irma left millions in Florida without power. Photo Credit: Timothy Fadek/Redux for ABC News
People charge their mobile phones using electrical outlets at the base of palm trees in the plaza in front of the new city hall building on Sept. 11, 2017 in Homestead, Fla. Hurricane Irma, which made landfall ... Photo Credit: Chip Somodevilla/Getty Images
People look at a swamped sailboat at a marina off Brickell Avenue after Hurricane Irma struck in Miami, Fla., Sept. 11, 2017. Photo Credit: Erik S. Lesser/EPA
Carl Kesser and his children, Kia Kesser and Jason Kesser hang out at the Tavern In the Grove bar after hurricane Irma passed through the area on Sept. 11, 2017 in Miami. Photo Credit: Joe Raedle/Getty Images
People ride their bike through flooded rural streets in Naples, Fla., Sept. 11, 2017, after Hurricane Irma made landfall on Sunday.

credit: Timothy Fadek / Redux for ABC News Photo Credit: Timothy Fadek/Redux for ABC News

A sinking boat is surrounded by debris in the aftermath of Hurricane Irma at Sundance Marine in Palm Shores, Fla., Sept. 11, 2017. Photo Credit: Red Huber/Orlando Sentinel via AP
People walk through flooded street in Naples, Fla., Sept. 11, 2017, after Hurricane Irma made landfall on Sunday.

Photo Credit: Timothy Fadek/Redux for ABC News

Crew embark supplies in the Royal Navy helicopter carrier HMS Ocean before crossing the Atlantic to provide humanitarian assistance and vital aid to British Overseas Territories and Commonwealth partners affect... Photo Credit: Jon Nazca/Reuters
Two men walk their bicycles along a flooded street on the waterfront of Fort Lauderdale, Fla., as Hurricane Irma passes through on Sunday, Sept. 10, 2017. Photo Credit: Paul Chiasson/The Canadian Press via AP
Staff and guests board the front door of a hotel after it blew open in Bonita Springs, Fla., on Sept. 10, 2017 during Hurricane Irma. Photo Credit: Nicholas Kamm/AFP/Getty Images
A tree branch felled by wind gusts narrowly missed parked cars as Hurricane Irma hits the southern part of the state Sept. 10, 2017 in Pompano Beach, Fla. Photo Credit: Chip Somodevilla/Getty Images
Yaya Lopez holds her fiance, Howard Lopez, while they sleep in a hallway at John Hopkins Middle School on Sunday, Sept. 10, 2017, in St. Petersburg, Fla. Photo Credit: Eve Edelheit/Tampa Bay Times via AP
Firefighters examine damage to six homes in the Palm Bay Estates mobile home park in Palm Bay, Fla., Sept. 10, 2017. Photo Credit: Craig Bailey/Florida Today via USA Today Network
People clear debris out of a drainage ditch in an attempt to keep the area from flooding as Hurricane Irma passes through on Sept. 10, 2017 in Miami. Photo Credit: Joe Raedle/Getty Images
Members of the Pinto family gather on the ground floor of a hotel in Fort Myers, Fla., Sept. 10, 2017. They evacuated their home in a coastal area and relocated to a hotel due to Hurricane Irma's landfall. Photo Credit: Timothy Fadek/Redux for ABC News
Lynn Grimes talks about the damage to her home in Palm Bay, Fla. after reports of a tornado touching down during Hurricane Irma, Sept. 10, 2017. Photo Credit: Craig Bailey/Florida Today via USA Today Network
Miami Police investigate the destroyed doors to an entrance of a bank in downtown Miami as outer bands of Hurricane Irma passed over the city, Sept. 10, 2017. Photo Credit: Jack Gruber/USA Today
Samantha Belk says goodbye to her maltese, Gardolf until after the hurricane in a locker room at John Hopkins Middle School on Sunday, Sept. 10, 2017, in St. Petersburg, Fla. The school filled classrooms and ha... Photo Credit: Eve Edelheit/Tampa Bay Times via AP
A crane tower is seen after part of it collapsed from the winds of Hurricane Irma on Sept. 10, 2017 in Miami. Photo Credit: Joe Raedle/Getty Images
A street is flooded as Hurricane Irma passes through Naples, Fla., Sept. 10, 2017. Photo Credit: David Goldman/AP
Flamingos stand on straw bedding in a secure room after the flock was herded to safety ahead of Hurricane Irma in Tampa, Fla., Sept. 10, 2017. Photo Credit: Busch Gardens Tampa Bay via Reuters
Boats ride out Hurricane Irma in a marina on Sept. 10, 2017 in Miami. Hurricane Irma made landfall in the Florida Keys as a Category 4 storm on Sunday, lashing the state with 130 mph winds as it moves up the co... Photo Credit: Joe Raedle/Getty Images
Leo Figueroa and his son Leo Jr. wait out Hurricane Irma in a hotel on Sept. 10, 2017 in Fort Myers, Fla. Photo Credit: Spencer Platt/Getty Images
A truck is seen turned over as Hurricane Irma passes south Florida, in Miami, Sept. 10, 2017. Photo Credit: Carlos Barria/Reuters
A flooded street near the Malecon in Havana, Sept. 10, 2017. Deadly Hurricane Irma battered central Cuba on Saturday, knocking down power lines, uprooting trees and ripping the roofs off homes as it headed towa... Photo Credit: Yamil Lageyamil Lage/AFP/Getty Images
Cubans wade through a flooded street in Havana, Sept. 10, 2017.

Photo Credit: Yamil Lageyyamil Lage/AFP/Getty Images

Flood waters rise around signs at the Haulover Marine Center at Haulover Park as Hurricane Irma passes by, Sept. 10, 2017, in North Miami Beach, Fla. Photo Credit: Wilfredo Lee/AP
People emerge from their homes in Miami between storm bands as Hurricane Irma hits Miami, Sept. 10, 2017. Photo Credit: Jack Gruber-USA TODAY
A sailor leaves with his belongings after loosing his boat in Marigot, Sept. 9, 2017 on the island of St. Martin which was devastated by Hurricane Irma. Photo Credit: Martin Bureau/AFP/Getty Images
A man swims through a flooded street in Havana, Cuba, Sept. 10, 2017. Photo Credit: Ernesto Mastrascusa/EPA
People walk through flooded streets in Havana after the passage of Hurricane Irma, in Cuba, Sept. 10, 2017. Photo Credit: Ramon Espinosa/AP
Hotel guests walk through dark hallways after the electricity was lost as Hurricane Irma arrives into southwest Florida, Sept. 10, 2017 in Fort Myers, Florida. Photo Credit: Spencer Platt/Getty Images
Heavy rains flood the streets in the Coconut Grove area in Miami, Sept. 10, 2017, during Hurricane Irma. Photo Credit: Alan Diaz/AP
Palm Bay officer Dustin Terkoski walks over debris from a two-story home at Palm Point Subdivision in Brevard County, Fla., after a tornado touched down, Sept. 10, 2017. Photo Credit: Red Huber/Orlando Sentinel via AP
Waves crash over a seawall at the mouth of the Miami River from Biscayne Bay, Fla., as Hurricane Irma passes by, Sept. 10, 2017, in Miami. Photo Credit: Wilfredo Lee/AP
Recently planted palm trees lie strewn across the road as Hurricane Irma passes by, Sept. 10, 2017, in Miami Beach, Fla. Photo Credit: Wilfredo Lee/AP
People wade through a flooded street after the passing of Hurricane Irma, in Havana, Cuba, Sept. 10, 2017. Photo Credit: Reuters
Residents walk near downed power lines felled by Hurricane Irma, in Caibarien, Cuba, Sept. 9, 2017. Photo Credit: Desmond Boylan/AP
A view of a street after hurricane Irma hit Caibarien, Villa Clara, Cuba, Sept. 9, 2017. Photo Credit: Alejandro Ernesto/EPA
People walk on a damaged street after the passage of Hurricane Irma in Caibarien, Cuba, Sept. 9, 2017. Photo Credit: Alexandre Meneghini/Reuters
A man shelters himself against the rain after the passage of Hurricane Irma in Caibarien, Cuba, Sept. 9, 2017. Photo Credit: Alexandre Meneghini/Reuters
This handout photograph provided courtesy of the Dutch Department of Defense on Sept. 7, 2017, shows houses and cars damaged after the passage of Hurricane Irma on the Dutch Caribbean island of St. Maarten. Photo Credit: Gerben Van Es/AFP/Getty Images
A man walks on a street covered in debris after hurricane Irma hurricane passed on the French island of St. Martin, near Marigot, Sept. 8, 2017. Photo Credit: Martin Bureau/AFP/Getty Images
A man walks among debris as Hurricane Irma moves off the northern coast in Nagua, Dominican Republic, Sept. 7, 2017. Photo Credit: Ricardo Rojas/Reuters
This handout photograph provided courtesy of the Dutch Department of Defense on Sept. 8, 2017, shows a man looking on over the devastation of Hurricane Irma on the Dutch Caribbean island of St. Martin. Photo Credit: GERBEN VAN ES/AFP/Getty Images
A woman and child use a blanket as protection from wind and rain as they walk in Caibarien, Cuba, Sept. 8, 2017. Photo Credit: Desmond Boylan/AP
Dark clouds are seen over Miami's skyline prior to the arrival of Hurricane Irma to south Florida, Sept. 9, 2017. Photo Credit: Carlos Barria/Reuters
Annette Davis kisses her son Darius, 3, while staying at a shelter in Miami after evacuating from their home in Florida City, Fla., ahead of Hurricane Irma, Sept. 9, 2017. Photo Credit: David Goldman/AP
A keeper guides an Indian white-rumped vulture into shelter ahead of Hurricane Irma at the zoo in Miami, Fla., Sept. 9, 2017. A mandatory evacuation order was issued for most coastal areas in Florida in anticip... Photo Credit: Timothy Fadek/Redux for ABC News
Brown pelicans and an American white pelican take refuge in a shelter ahead of the downfall of Hurricane Irma at the zoo in Miami, Fla., Sept 9, 2017. Photo Credit: Adrees Latif/Reuters
Locals stand next to a damaged road as Hurricane Irma moves off the northern coast, in Nagua, Dominican Republic, Sept. 7, 2017. Photo Credit: Ricardo Rojas/Reuters
This handout photograph provided courtesy of the Dutch Department of Defense, Sept. 8, 2017, shows Royal Navy personnel distributing supplies for victims of Hurricane Irma on the Dutch Caribbean island of St. M... Photo Credit: Gerben Van Es/AFP/Getty Images
This photo provided by the Dutch Defense Ministry shows storm damage in the aftermath of Hurricane Irma, in Dutch Caribbean St. Martin, on Sept. 6, 2017. Photo Credit: Gerben Van Es/Dutch Defense Ministry via AP
This photo provided by Caribbean Buzz shows boats clustered together after Hurricane Irma Friday, Sept. 8, 2017. Photo Credit: Caribbean Buzz via AP
People pack up their belongings in preparation for Hurricane Irma in Cuba, Sept. 8, 2017. Photo Credit: Adalberto/Roque/AFP/Getty Images
A woman uses a can to take water out of her house in a flooded area after hurricane Irma in Fort Liberte, Haiti, Sept. 8, 2017. Photo Credit: Andres Martinez Casares/Reuters
A picture taken on Sept. 7, 2017 shows inhabitants of the Sandy town neighborhood clearing off wreckages in a street in Marigot on the French Carribean island of St. Martin, after the passage of Hurricane Irma. Photo Credit: Lionel Chamoiseau/AFP/Getty Images
People seek higher ground above flooded streets in Santiago de los Caballeros, Dominican Republic, Sept. 7, 2017. Photo Credit: Luis Tavarez/EPA
A home is surrounded by debris brought in by Hurricane Irma in Nagua, Dominican Republic, Sept. 7, 2017. Photo Credit: Tatiana Fernandez/AP
The Ministry of Defense, taken from a Royal Navy helicopter RLC Mexeflote, approaches Sandy Bay Village beach, in Anguilla, Sept. 8, 2017. French, British and Dutch military authorities rushed aid to a devastat... Photo Credit: Royal Navy/Ministry of Defence via AP
Damage in Orient Bay, on the French Carribean island of St. Martin, after the passage of Hurricane Irma, Sept. 7, 2017.

Photo Credit: Lionel Chamoiseau/AFP/Getty Images

Felipe Martinez walks his dog among the debris after Hurricane Irma passed through San Juan, Puerto Rico, Sept. 7, 2017. Photo Credit: Erika P. Rodriguez/The New York Times/Redux
Soldiers preparing to depart at the Joint Air Mounting Centre (JAMC) in South Cerney, southwest England, Sept. 8, 2017. As part of the response to the emerging disaster following Hurricane Irma several hundred ... Photo Credit: Jonathan Lee Van Zyl/AFP/Getty Images
A man cuts branches of a fallen tree in the aftermath of Hurricane Irma in Puerto Plata, Dominican Republic, Sept. 8, 2017. Photo Credit: Ivan Alvarado/Reuters
A view of the aftermath of Hurricane Irma on St. Martin island in the Caribbean, Sept. 6, 2017. Photo Credit: Netherlands Ministry of Defense via Reuters
Pleasure crafts lie crammed against the shore in Paraquita Bay as the eye of Hurricane Irma passed Tortola, British Virgin Islands, Sept. 6, 2017. Photo Credit: Ron Gurney/Handout via Reuters
Families gather at a shelter in a local church during the evening before the arrival of Hurricane Irma in Las Terrenas, Dominican Republic, Sept. 6, 2017. Dominicans wait for the arrival of Hurricane Irma after... Photo Credit: Tatiana Fernandez/AP
Waves crash against the seawall as Hurricane Irma slammed Fajardo, Puerto Rico, Sept. 6, 2017. Photo Credit: Alvin Baez/Reuters
People put up shutters as they prepare a family member's house for Hurricane Irma, Sept. 6, 2017, in Miami. Photo Credit: Joe Raedle/Getty Images
A fisherman removes equipment from his wooden boat as a precaution against Hurricane Irma, in Port-au-Prince, Haiti, Sept. 6, 2017. Photo Credit: Dieu Nalio Chery/AP
Sylvia Lamzo, 69, sits on a folding bed at an emergency center as Hurricane Irma approaches Puerto Rico, in Fajardo, Sept. 6, 2017.

Photo Credit: Ricardo Arduengo/AFP/Getty Images

Shoppers wait in line for the arrival of a shipment of water during preparations for the impending arrival of Hurricane Irma, Sept. 6, 2017 in Altamonte Springs, Fla. Photo Credit: Joe Burbank/Orlando Sentinel via AP
Police patrol the area as Hurricane Irma slams across islands in the northern Caribbean on Wednesday, in San Juan, Puerto Rico, Sept. 6, 2017. Photo Credit: Alvin Baez/Reuters

Category 2: Winds reaching 96 to 110 mph. These extremely dangerous winds can uproot big trees, cause serious damage to homes and lead to power outages that last several days to weeks.

Category 3: With winds from 111 to 129 mph, Category 3 is considered a major hurricane. Devastating damage can occur, and electricity and water might unavailable for several weeks.

Category 4: With winds from 130 to 156, Category 4 hurricanes bring catastrophic damage to homes, trees and power lines and can make areas unlivable.

This photo shows damaged homes in the aftermath of Hurricane Irma in Sunshine Key, Fla., Sept. 13, 2017.

Category 5: Five is the highest category for hurricanes with winds reaching 157 mph or higher. These hurricanes cause catastrophic damage by completely destroying buildings and houses and can make areas completely unlivable.

What happened last year?

Hurricanes Harvey pummeled Houston in August, followed by Hurricane Irma in the Caribbean and Florida in September, both of which left behind severe flooding that destroyed and damaged homes and businesses.

A boy walks with a bodyboard through a flooded street as the effects of Hurricane Harvey are seen Aug. 26, 2017 in Galveston, Texas.
Family members ride in a small boat as Tony Holt's trailer is pulled out of the flood waters from Hurricane Irma in Gainesville, Florida, Sept. 14, 2017, after Hurricane Irma.

Before the Caribbean could recover from Irma, Hurricane Maria tore through just two weeks later, devastating Puerto Rico as a Category 4 storm.

A man rides his bicycle through a damaged road in Toa Alta, west of San Juan, Puerto Rico, Sept. 24, 2017, following the passage of Hurricane Maria.

Puerto Rico still hasn't recovered from Maria. The storm caused massive power outages and destruction to homes, hospitals and water treatment plants.

The Puerto Rico Electric Power Authority reports that 99.2 percent of the island is back on the electrical grid, leaving over 13,000 customers still without power. In an interview with ABC News in March, Gov. Ricardo Rossello said the entire island would have power before the start of the Atlantic hurricane season.

ABC News' Ginger Zee, Melissa Griffin and Joshua Hoyos contributed to this report.