TURKS AND

CAICOS

Maria

6:15 p.m. Eastern

Thursday

HAITI

DOMINICAN

REPUBLIC

Puerto Rico

(U.S.)

Image source: GOES-16 satellite image via NOAA

TURKS AND

CAICOS

Maria

6:15 p.m. Eastern

Thursday

HAITI

DOMINICAN

REPUBLIC

Puerto Rico

(U.S.)

Landfall at 6:15 a.m.

Eastern Wednesday

TURKS AND

CAICOS

Maria

6:15 p.m. Eastern

Thursday

HAITI

DOMINICAN

REPUBLIC

Puerto Rico

(U.S.)

Landfall at 6:15 a.m.

Eastern Wednesday

Hurricane Maria made landfall as a Category 4 storm Wednesday morning in Puerto Rico, bringing winds at about 160 mph to an island that dodged the worst of Hurricane Irma’s destructive power just a few weeks ago.

[Capital Weather Gang: Tracking Maria]

The storm made landfall in Puerto Rico at about 6:15 a.m. near Yabucoa, a city of less than 40,000 along the island’s southeastern coast.

Maria is the fourth major hurricane in the 2017 season and the first Category 4 storm to make landfall on the island in more than 80 years.

Within 24 hours, Maria dumped more than two feet of rain in areas across the island, triggering massive flooding.

Heavy winds snapped palm trees, ripped roofs off houses and knocked out power for the entire island. They also toppled cellphone towers, leaving many residents without the ability to call for help or contact family members.

As of Thursday, the National Oceanic and Atmospheric Administration's 10-day forecast, which indicates the storm's possible predicted paths, mostly show Maria staying away from the U.S. East Coast.

However, several models project the storm could make its way along the coasts in the Mid-Atlantic region.

Hurricane Jose will play a key role in determining Maria’s final path. If Jose weakens too quickly, Maria could drift closer to the East Coast by next week.

UNITED

STATES

CUBA

Atlantic

Ocean

Puerto Rico

(U.S.)

Washington, D.C.

UNITED

STATES

Norfolk

Wilmington

Savannah

Jacksonville

Gulf of

Mexico

CUBA

Atlantic Ocean

HAITI

Dom.

Rep.

JAMAICA

Puerto Rico

(U.S.)

Washington, D.C.

UNITED

STATES

Gulf of

Mexico

CUBA

Atlantic Ocean

Puerto Rico

(U.S.)

High ocean temperatures in the Caribbean Sea provide the ideal condition for fueling tropical cyclones.

A sea surface temperature of at least 79.7 degrees Fahrenheit is necessary for tropical cyclones to develop, and the region is well above that threshold.

Saturday, Sept. 16

Sea surface temperature

(degrees Fahrenheit)

71.6

87.8

79.7

Ideal conditions for fueling a hurricane

U.S.

500 MILES

Atlantic

Ocean

Gulf of

Mexico

Puerto Rico

(U.S.)

MEX.

Caribbean

Sea

Pacific

Ocean

Maria’s

path

VEN.

COL.

Sea surface temperature (degrees Fahrenheit)

71.6

87.8

79.7

Ideal conditions for fueling a hurricane

UNITED STATES

Cooler temperatures

left by Jose

Gulf of

Mexico

500 MILES

Atlantic

Ocean

Puerto Rico

(U.S.)

CUBA

MEX.

HAITI

DOM.

REP.

JAMAICA

Jose’s path

Caribbean

Sea

Pacific

Ocean

Maria’s path

VENEZUELA

COLOMBIA

Sea surface temperature (degrees Fahrenheit)

71.6

87.8

79.7

Ideal conditions for fueling a hurricane

UNITED STATES

Cooler temperatures

left by Jose

Gulf of

Mexico

500 MILES

MEXICO

Atlantic

Ocean

CUBA

Puerto Rico

(U.S.)

DOM.

REP.

HAITI

JAMAICA

Jose’s path

Caribbean

Sea

Pacific

Ocean

Maria’s path

VENEZUELA

COLOMBIA

Maria is now among the most intense hurricanes to make landfall within the United States and its territories, according to the National Hurricane Center.

When the storm hit Puerto Rico, its central air pressure was reported to be 917 millibars (mbar), putting it within the same strength field as Hurricane Andrew in 1992 (922 mbar) and Hurricane Dean (905 mbar) in 2007.

[Hurricane Maria churns through Caribbean as ravaged Puerto Rico takes stock of an 'island destroyed']

A hurricane’s strength is dependent on the air pressure at its center. The lower the pressure, the more energy the storm can generate, which means stronger winds.

The most intense hurricane to make landfall in the United States was the Labor Day storm in 1935 (892 mbar). Hurricane Wilma (882 mbar) in 2005 holds the record as the most intense hurricane ever recorded in the Atlantic basin.

Hurricane strengths at U.S. landfall since 1852

Storms that made landfall

Storms from 2017 season

Atmopheric

pressure

(mbar)

Category 4

or higher

1,000

980

STAN

(2005)

960

HARVEY

(Aug. 25)

SANDY

(2012)

940

920

Irma

(Sept. 10)

Maria

(Wednesday)

900

75

100

125

150

175

Wind speed (mph)

Note: Some storms are included more than once to reflect multiple landfalls.

Hurricane strengths at U.S. landfall since 1852

Storms that made landfall

Storms from 2017 season

1,000

Category 4

or higher

980

STAN

(2005)

960

Air pressure

(mbar)

SANDY

(2012)

HARVEY (Aug. 25)

940

ANDREW

(1992)

Irma

(Sept. 10)

920

KATRINA

(2005)

Maria

(Wednesday)

900

“LABOR DAY” (1935)

75

100

125

150

175

Wind speed (mph)

Note: Some storms are included more than once to reflect multiple landfalls.

Islands in the eastern Caribbean are still recovering from Hurricane Irma, which roared into the region as a Category 5 storm.

Some of those islands, including St. Croix, were hit again by Maria. The island took the brunt of Maria’s force, while the storm was a Category 5 and brought destructive 175 mph winds.

Puerto Rico missed Irma’s full force, but the storm still caused widespread power outages.

2017 Atlantic basin wind history

Tropical-storm force winds

Hurricane-force winds

500 MILES

Jose

Gert

Atlantic

Ocean

Harvey

Irma

Katia

Franklin

Maria

Pacific

Ocean

Note: Maria and Jose data as of 5 p.m. Thursday.

2017 Atlantic basin wind history

Tropical-storm force winds

Hurricane-force winds

500 MILES

Gert

Jose

Atlantic

Ocean

Harvey

Irma

Gulf of

Mexico

Katia

Franklin

Irma

Jose

Maria

Pacific

Ocean

Note: Maria and Jose data as of 5 p.m. Thursday

2017 Atlantic basin wind history

Tropical-storm force winds

Hurricane-force winds

500 MILES

Gert

Jose

Harvey

Irma

Atlantic Ocean

Gulf of

Mexico

Katia

Irma

Franklin

Jose

Pacific

Ocean

Maria

Note: Maria and Jose data as of 5 p.m. Thursday

Maria started as a tropical depression off the west coast of Africa.

As the system approached the Windward Islands, the storm quickly intensified from a Category 1 to a Category 5 in less than a day before it made landfall on the island of Dominica.

Laris Karklis, Denise Lu, Chris Alcantara, Tim Meko, John Muyskens and Gabriel Florit contributed to this report.

A previous version of this story incorrectly stated that Maria is the fourth major hurricane to make landfall in the U.S. It is the fourth major hurricane of the 2017 season, but the third to make landfall in the U.S.

About this story

Satellite imagery from GOES-16 imagery via NOAA. Hurricane path, wind history, barometric pressure and water temperature data from the National Hurricane Center. Sea surface temperature from NOAA Coral Reef Watch.

Originally published Sept. 20, 2017.

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