How high's the water mama?
October 29, 2012 11:56 AM Subscribe
[sandyfilter] Can someone explain storm surge and sea levels?
posted by morganw to science & nature (5 answers total) 5 users marked this as a favorite
My parent live near the upper Narragansett Bay
, supposedly at nearly 800 feet above sea level. Nearby Save the Bay Drive which is right on the water is 780 ft.
Addresses on the actual Atlantic
show altitudes in the teens and twenties as I'd expect.
So, how is there that much drop in Narragansett Bay? I could understand if there was a constriction before it emptied into the sea like Lake Pontchartrain.
Altitudes are vs. mean sea level, right? Sandy is moving slowly enough that there's concern that storm surge might last through three high tides. What does this mean for people not right on the water, but up a hill and across several acres from it?
Besides wind, there are two risks from water, right? Rain not being able to flow to the sea fast enough & finding alternate routes (flash flooding) and storm surge. What's the bigger risk in that area?