Name:	GC -	Reply
Subject:	Weird stuff going on
Date:	9/11/2017 8:32:42 PM

just a note that the phenomenon that occurred in the Bahamas, and the mobile bay is happening in gulf shores.  Water going out instead of in.  Had i not seen in the last few minutes waves on the gulf shoreline going out I would not believed it.  All this to suggest it might happen on lake Martin?  Keep an eye out for strange stuff as Irma moves thru.

Name:	Aardvark -	Reply
Subject:	Weird stuff going on
Date:	9/12/2017 1:02:17 AM

I can think of some heavily silted up creeks where this could happen under the right conditions.  Thankfully, the wind has died down, so it probably won't happen this time.

Name:	MartiniMan -	Reply
Subject:	Weird stuff going on
Date:	9/12/2017 8:54:20 AM

This is pretty typical when you have an extremly low pressure system like a hurricane.  It will pull the water toward it.  Every hurricane has a storm surge and that water has to come from somewhere.  I don't think it would be noticeable with a smaller water body like Lake Martin but it might be noticable in the Great Lakes but it would be uncommon to have that much of a pressure gradient in the midwest.

Name:	wix -	Reply
Subject:	Weird stuff going on
Date:	9/12/2017 10:56:37 AM

What happens with water depends totally on the wind direction.  Saw a hurricane years ago that moved from east to west along the Gulf coast and the north winds were the leading edge and removed 4' of water then the eye passed and south winds brought in 12' of water, but the net storm surge was 8' which caused a lot less damage than NWS had predicted.  Timing of tides can also affect storm surge levels.

Name:	MartiniMan -	Reply
Subject:	Weird stuff going on
Date:	9/12/2017 12:28:31 PM

All true.  I read that the lower sea levels in the Bahamas wasn't due to winds, it was primarly due to the low pressure of Hurricane Irma. You can very little wind in the videos of people showing the lower sea level.  

Even though it rarely occurs, imagine how much storm surge you would get in macrotidal zones at high tide with a corresponding hurricane.  The southeastern U.S. is lucky it is microtidal or it would be amazing to see and worse to experience.