Hurricane Ida is so powerful it made the Mississippi River flow backwards

·1 min read
  • USGS data shows that the Mississippi River's stream was reversed for approximately four hours.

  • Supervising hydrologist Scott Perrien told CNN that flow reversals are "extremely uncommon."

  • On Sunday afternoon, Hurricane Ida made landfall in Port Fourchon, Louisiana.

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The "Sealand Illinois," a Hong Kong registered cargo ship, passes under the Crescent City Connection Bridge on the Mississippi River in New Orleans, Tuesday, Aug. 13, 2019. AP Photo/Gerald Herbert

United States Geological Survey (USGS) data shows that the flow of the Mississippi River was reversed upstream as Hurricane Ida made landfall and pushed inland.

-candese charles (@candesecharles) August 29, 2021

According to a USGS graph, the Mississippi River's stream was reversed for approximately four hours near Belle Chasse, Lousiana, which is located in Plaquemines Parish.

"I remember, offhand, that there was some flow reversal of the Mississippi River during Hurricane Katrina, but it is extremely uncommon," Scott Perrien, a supervising hydrologist with the USGS Lower Mississippi Gulf Water Science Center in Baton Rouge, Louisiana, told CNN.

-Brian Olson (@mrbrianolson) August 29, 2021

Hurricane Ida made landfall Sunday afternoon in Port Fourchon, Louisiana, with maximum sustained winds of 140 mph. Ida is projected to continue inland over portions of Louisiana and western Mississippi on Monday, according to an advisory from the National Hurricane Center.

-Adam Ney (@sayneykid) October 28, 2020



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