The strongest hurricanes to hit the US mainland and other tropical cyclone records

PHOTO: Men use ropes to pull away the debris of houses in order to look for bodies, after the Galveston Hurricane of 1900.PlayLibrary Of Congress/Corbis/VCG via Getty Images, FILE
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Hurricane Dorian is currently forecast to reach Florida as a "Category 4" storm after Labor Day. If the massive storm reaches "Category 4" status and hits the Sunshine State, it would likely make it one of the strongest storms to ever hit the U.S. mainland.

There are a few ways to rate the severity of a storm when trying to define the "worst" or "biggest" -- wind speed, lowest internal pressure and damage costs. In 2018, Hurricane Michael hit Northwest Florida as the third most intense storm to ever reach the U.S. The National Oceanic and Atmospheric Administration said the storm's pressure was 919 millibars (mb).

Here are the 10 most intense hurricanes in U.S. history, as measured by central pressure, according to the National Oceanic and Atmospheric Administration. The lower the pressure, the more intense the storm.

1. FL (Keys) - 1935, 892 mb

2. Camille (Mississippi, Louisiana, Virginia) - 1965, 900 mb

3. Michael (Florida) - 2018, 919 mb

4. Katrina (Louisiana) - 2005, 920 mb

5. Andrew (Florida, Louisiana) - 1992, 922 mb

6. TX (Indianola) - 1884, 925 mb

7. FL (Keys) - 1919, 927 mb

8. FL (Lake Okeechobee) - 1928, 929 mb

9. Donna (Florida) - 1960, 930 mb

10. Carla (Texas) - 1961, 931 mb

Data is current through 2018

PHOTO: Men use ropes to pull away the debris of houses in order to look for bodies, after the Galveston Hurricane of 1900. Library Of Congress/Corbis/VCG via Getty Images, FILE
Men use ropes to pull away the debris of houses in order to look for bodies, after the Galveston Hurricane of 1900.

Hurricane Katrina, which decimated New Orleans in 2005, is essentially tied with Michael as the third most intense to make U.S. landfall, but was by far the costlier storm. According to NOAA, Katrina, which hit the Bahamas, Florida, Louisiana, Mississippi and Alabama, resulted in $40.6 billion in insured losses and more than $108 billion in total estimated losses.

A vast majority of the 10 costliest hurricanes to hit the U.S. mainland have occurred since 2005, the NOAA said.

10 costliest hurricanes in the U.S. from 1900-2017, adjusted to the 2017 U.S. dollar

1. Katrina (2005) - $160 billion

2. Harvey (2017) - $125 billion

3. Sandy (2012) - $70 billion

4. Irma (2017) - $50 billion

5. Andrew (1992) - $47.69 billion

6. Ike (2008) - $34.8 billion

7. Ivan (2004) - $27.06 billion

8. Wilma (2005) - $24.32 billion

9. Rita (2005) - $23.68 billion

10. Charley (2004) - $21.1 billion

PHOTO: An 85-foot boat was deposited in the yard of a home in Biloxi, Miss., as part of the wreckage of Hurricane Camille. The boats anchorage is more than 100 yards from the home and floated in on flood tides. Joe Holloway Jr./AP, FILE
An 85-foot boat was deposited in the yard of a home in Biloxi, Miss., as part of the wreckage of Hurricane Camille. The boat's anchorage is more than 100 yards from the home and floated in on flood tides.

And these are the 10 deadliest hurricanes in U.S. history to hit the mainland

1. TX (Galveston) 1900, 8000-12,000 casualties

2. FL (SE/Lake Okeechobee) 1928, 2500-3000 casualties

3. Katrina (LA,MS,AL,FL,GA) - 2005, 1500 casualties

4. LA (Cheniere Caminanda)- 1893, 1100-1400 casualties

5. SC/GA (Sea Island) - 1893, 1000-2000 casualties

6. GA/SC - 1881, 700 casualties

7. Audrey (Louisiana, Texas) - 1957, 416 casualties

8. FL (Keys) - 1935, 408 casualties

9. LA (Last Island) - 1856- 400 casualties

10. FL (Miami) - 1926, 372 casualties

Data current through 2013. Some figures are estimated.

PHOTO: Thomas Walker, the sexton of the Episcopal Church of the Redeemer carries a bronze plaque from the church which was destroyed by Hurrican Katrina, Sept. 1, 2005 in Biloxi, Miss. Win Mcnamee/Getty Images, FILE
Thomas Walker, the sexton of the Episcopal Church of the Redeemer carries a bronze plaque from the church which was destroyed by Hurrican Katrina, Sept. 1, 2005 in Biloxi, Miss.

If hurricanes outside the continental U.S. are factored in, two hurricanes to strike Puerto Rico - San Felipe (1928) and David (1979) - rank among the most intense in history. And Hurricane Maria, which struck Puerto Rico in 2017, decimated the island, causing an estimated $90 billion in damage and left nearly 3,000 people dead.

According to the NOAA, several 19th century hurricanes to strike Puerto Rico and one in 1928 (San Felipe) and 1932 (unnamed), would rank among the 20 deadliest storms.

Another notable record for hurricanes, while not in the U.S., includes record storm surge. NOAA says Tropical Cyclone Mahina struck Australia in 1899 and produced a storm surge of 30 feet.

The largest hurricane death toll on record is the Bangladesh Cyclone of 1970, an estimated 500,000 people died due to the storm surge, according to the National Weather Service.