1860 Gulf Coast or Mississippi Delta Hurricane made landfall at the Mississippi Delta southwest of New Orleans late on September 13/very early on September 14.
As a Category 2 or 3 hurricane, it was very large, producing the highest surface at Pascagoula, Mississippi since 1820 with a 7′ rise in 20 minutes there.
Major damage from storm surge & wind occurred as far east as Mobile, Alabama.
The remnants moved northeast & brought first a likely PRE to the Tri-State prior to the core of the remnants arriving. 1.32″ fell with it, followed by 2.00″ of rainfall with perhaps the actual remnants.
The rainfall was welcome after a hot, dry summer after a wet, very stormy spring.
Talk about a ruthless hurricane season for this same Gulf Coast region.
Interestingly, a Category 3 hurricane made landfall over New Orleans August 8, then rode the Gulf Coast from Mobile to north of Valdosta, Georgia to near Savannah by August 16.
Yet, on September 30, a Category 2 storm made landfall west of New Orleans & moved northeastward through Tennessee & Kentucky. The eastern & northern part of New Orleans at the time was inundated as the storm surge rushed through Lake Pontchartrain. Natchez, Mississippi saw the highest, most damaging winds since the great 1840 tornado. This was also a large storm with tropical storm force winds across northern Florida.