General Discussion & Chat: Best/Worse/What did I learn today? Chat with friends.., 1 by themoonhowl

themoonhowl wrote:
There is no real comparison between Katrina and Isaac, With Katrina, it was sheer strength of winds that drove a massive storm surge on shore. Isaac is a plodding wet storm. It is very slow moving, so it drops lots of rain in a very short time. The biggest danger is the possibility of 20 inches or more of rain coming down in just a few hours. The pumps and drains can't handle that kind of water and you get wide spread flooding....add to that 6 to 10 feet of storm surge water coming ashore and you have a real mess. Then if the wind increases, even to 80-90 MPH (category 2), you have trees coming down because the ground is saturated and can't hold the roots. In 2001, H.Allison came plodding through...20 inches of rain over a 24-36 hour period. Our subdivision was an actual island....the water in the creek rose up 6 feet over the bridge. We were AT HOME...for 4 days before the water subsided. Storm-wise, our area sustained much greater damage during H Gustave than H Katrina.

The picture below shows Muddy Creek (to the front) over-flowing into the neighbors pond (behind) That was after a really heavy rain a few months ago. The second pic shows the run of the Creek...during Allison, you could not see any green all the way back into the trees...the bridge is about 8 feet over the creek and the water was 6 feet over the bridge.