Hurricane Ida Temporarily Reversed the Flow of the Mississippi River

2 weeks ago 6
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Hurricane Ida blasted ashore Sunday arsenic 1 of the astir almighty storms ever to deed the U.S., knocking retired powerfulness to each of New Orleans, blowing roofs disconnected buildings and reversing the travel of the Mississippi River arsenic it rushed from the Louisiana seashore into 1 of the nation’s astir important concern corridors.

Data from the U.S. Geological Survey shows a tempest gauge conscionable southbound of New Orleans recorded a “negative flow” connected the Mississippi River, which flows into the Gulf of Mexico, arsenic tempest surge from Ida pushed inland.

In the six days earlier Ida's arrival, the stream had a discharge complaint of astir 300,000 cubic feet per second. However, connected Sunday, it was moving astir 40,000 cubic feet per 2nd of h2o upriver during highest reversal.

USGS supervising hydrologist Scott Perrien told CNN that the reversal is “extremely uncommon.”

“I remember, offhand, that determination was immoderate travel reversal of the Mississippi River during Hurricane Katrina, but it is highly uncommon,” Perrien said.

The tempest surge caused the stream level to emergence astir 7 feet astatine the USGS gauge successful Belle Chasse, Louisiana, according to Perrien.

Home information footage captured hours of Hurricane Ida's whipping winds and tempest surge astatine a location successful Port Fourchon, LA.

U.S. & World

Ida weakened into a tropical tempest overnight arsenic it pushed inland implicit Mississippi with torrential rainfall and shrieking winds.

Rescuers acceptable retired successful hundreds of boats and helicopters Monday to scope radical trapped by floodwaters and inferior crews mobilized aft a furious Hurricane Ida swamped the Louisiana seashore and made a shambles of the electrical grid successful the sticky, late-summer heat.

Interstate 10 betwixt New Orleans and Baton Rouge — the main east-west way on the Gulf Coast — was closed due to the fact that of flooding, with the h2o reported to beryllium 4 feet heavy astatine 1 spot, officials said.

Preliminary measurements showed Slidell, Louisiana, got astatine slightest 15.7 inches of rain, portion New Orleans received astir 14 inches, forecasters said. Other parts of Louisiana and Mississippi, Alabama and Florida got 5 to 11 inches.

Amid the maze of rivers and bayous astir the New Orleans area, radical retreated to their attics oregon rooftops and posted their addresses connected societal media with instructions for search-and-rescue teams connected wherever to find them.

The Louisiana National Guard said it activated 4,900 Guard unit and lined up 195 high-water vehicles, 73 rescue boats and 34 helicopters. Local and authorities agencies were adding hundreds of more.

Winds from Ida pummeled Laplace, Louisiana, arsenic the tempest moved done the cardinal portion of the state

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