NOAA Projecting Record Coastal Flooding This Year - Up 60% From 20 Years Ago

The projected increase in high tide flooding in 2018 may be as much as 60 percent higher across U.S. coastlines compared to typical flooding about 20 years ago, according to scientists at the National Oceanic and Atmospheric Administration.

Some flooding in the 2018 seasonal forecast can be credited to an El Niño scientists now believe may occur later this year, however they believe sea level rise is the main culprit for an increase in recent years in coastal high tide flooding, which occurs when water levels measured at NOAA’s numerous tide gauges exceed heights based on national flooding thresholds.

These assertions were made by NOAA scientists on Wednesday in the 2017 State of U.S. High Tide Flooding and a 2018 Outlook, which shows more than a quarter of the coastal locations measured last year tied or broke their individual records for high tide flood days.

“I think the underlying trend is quite clear. Due to sea level rise the national average trend in high tide flood frequency is now more than 50 percent higher than it was 20 years ago and 100 percent higher than it was 30 years ago,” William Sweet, a NOAA oceanographer and one of the authors of the report, said on a conference call with reporters.

EDIT

https://www.insurancejournal.com/news/national/2018/06/07/491586.htm