RECENT LOCATIONS

Close
Add a location
Edit your saved locations

Isaac causes Mississippi River to flow backwards


Aerial photo of the of Mississippi (left, dark green) and Ohio River (right) junction in Cairo, Illinois (courtesy: NASA)
Aerial photo of the of Mississippi (left, dark green) and Ohio River (right) junction in Cairo, Illinois (courtesy: NASA)

Staff writers

September 2, 2012 — A new report by the USGS suggests that Isaac's landfall caused the Mississippi River to flow backwards on Thursday.

Strong winds and a storm surge created by Isaac's landfall caused the Mississippi river to stream backwards for almost 24 hours on Thursday, the USGS says.

"This reversal of flow of the mighty Mississippi is but one measure of the extreme force of Isaac," said USGS Director Marcia McNutt in a statement. "While such events are ephemeral, they are yet another reminder of why we need to respect hurricane warnings."

During the height of the storm, USGS also observed Lousiana's coastal rivers losing and regaining water levels in quick succession.

This phenomenon is a common by-product of hurricanes, caused by the storm's rotating nature.

A reverse-flow is far less frequent, due to the strong winds and massive waves required to alter the stream.

Sign in or Sign up to submit a comment.




Comments





Take your weather with you, no matter where you go.

Get instant forecasts and alerts, right on your computer.

  • RSS & Data
Add weather updates to your website or RSS reader.