Tuesday, January 2, 2018

Sea Level Rise for Hampton Roads 2017

Sea Water Levels at Sewells Point, VA


With the end of the year, it is a good time to recap the data we have on flooding events and sea level rise for the Hampton Roads region. 


Hourly Data at Sewells Point





Average Annual Sea Level at Sewells Point





The variability is caused by interannual processes like el Nino, la Nina and other ocean cycles. 


10 Year moving average at Sewells Point



Hours per year of Nuisance Flooding



Return Period of Flooding Events



Rate of Sea Level Rise 



The trend has increased from 4.59 to 4.61mm/year since last year.

The past year - 2017




2017 Compared to other years by month


You will notice that the highest water levels during any year are often in September. This is because the ocean waters are warmest then and they have expanded - making sea level higher. This is a seasonal effect.




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