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Message: [QUOTE="Chin Diesel, post: 4043774, member: 34"] I'll exit at this. The same information and quotes from the same guy working with the USGS. As I've said it's a combination of wind and surge. [URL='https://www.cnn.com/2021/08/29/weather/mississippi-river-hurricane-ida/index.html']Near New Orleans, Hurricane Ida forces Mississippi River to reverse flow - CNN[/URL] [B][I][U]"Storm surge and strong winds[/U][/I][/B] from Hurricane Ida stopped the flow of the Mississippi River near New Orleans on Sunday and actually caused it to reverse -- something the US Geological Survey says is "extremely uncommon."" "[URL='http://cnn.com/2020/08/28/us/hurricane-laura-mississippi-river-tide-trnd/'][U][I][B]During Hurricane Laura[/B][/I][/U][/URL][B][I][U], strong winds blew the top layer of the Mississippi River upriver away from the Gul[/U][/I][/B]f and slowed the river's main current." "By comparison, Hurricane Ida is forecast to bring a lower storm surge of 12-16 feet to some areas of southeast Louisiana, the NHC says. And near New Orleans it's expected to be even lower: 8-12 feet outside New Orleans and 5-8 feet along Lake Pontchartrain. [B][I][U]That's because the wind field was larger for Katrina: 90 miles from center at landfall, compared to 50 miles for Ida[/U][/I][/B]." [/QUOTE]