The path of Hurricane Ida

Hurricane Ida made landfall just before 1 p.m. on Sunday near Port Fourchon in southeast Louisiana with sustained winds of 150 mph before weakening to a tropical depression Monday afternoon.

Ida weakens to tropical storm as it moves to Mississippi with strong winds, heavy flooding

Prior to landfall, the National Hurricane Center warned that Hurricane Ida could bring “extremely life-threatening” storm surge flooding along the Louisiana coast, near the mouth of the Mississippi River.

Potential storm surge flooding from Hurricane Ida

Leveed area

1 ft

3

6

9+

Miss.

LA.

Hurricane Ida

projected path

Baton

Rouge

New Orleans

Data as of Aug. 29 at 11 a.m.

Source: NOAA NWS National

Hurricane Center

Potential storm surge flooding from Hurricane Ida

Leveed area

1 ft

3

6

9+

Miss.

LOUISIANA

Hurricane Ida

projected path

Baton

Rouge

Lafayette

New Orleans

Data as of Aug. 29 at 11 a.m.

Source: NOAA NWS National Hurricane Center

Potential storm surge flooding from Hurricane Ida

Leveed area

1 ft

3

6

9+

Miss.

Al.

Tex.

LOUISIANA

Hurricane Ida

projected path

Mobile

Baton

Rouge

Port

Arthur

Lafayette

New Orleans

Data as of Aug. 29 at 11 a.m.

Source: NOAA NWS National Hurricane Center

Storm surges are abnormal rises in sea level generated by intense storms. Surges generally occur on the side of the storm where winds rotate into the shore. The strongest surges are where the winds are most powerful, usually near the storm’s eye.

Land

Hurricane

eye

Storm surge

Rotation

direction

Water

Diagram is schematic

Land

Hurricane

eye

Storm surge

Rotation

direction

Water

Diagram is schematic

Land

Hurricane

eye

Storm surge

Rotation

direction

Water

Diagram is schematic

Water is pushed toward land by strong wind and, to a lesser extent, by low pressure around the storm. The height of a storm surge can be affected by many factors, such as the size and speed of the storm, the angle of its approach, the shape of the coastline and the slope of the continental shelf.

Hurricane winds

Wind-driven storm surge

Normal sea level

Land

Diagram is schematic

Wind-driven storm surge

Hurricane winds

Normal sea level

Land

Diagram is schematic

Wind-driven storm surge

Hurricane winds

Normal sea level

Land

Diagram is schematic

Storm surges and large waves generated by hurricanes are among the greatest threats to life and property during a storm.

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