Climate Central | By John Upton, Posted: 10/08/2014 9:08 am EDT Updated: 10/08/2014 2:59 pm EDT
Coastal American cities are sinking into saturated new realities, new analysis has confirmed. Sea level rise has given a boost to high tides, which are regularly overtopping streets, floorboards and other low-lying areas that had long existed in relatively dehydrated harmony with nearby waterfronts. The trend is projected to worsen sharply in the coming years.
A new report, released by the Union of Concerned Scientists late on Tuesday, forecasts that by 2030, at least 180 floods will strike during high tides every year in Annapolis, Md. In some cases, such flooding will occur twice in a single day, since tides come in and out about two times daily. By 2045, that’s also expected be the case in Washington, D.C., Atlantic City, N.J. and 14 other East Coast and Gulf Coast locations out of 52 analyzed by the Union of Concerned Scientists.
“The shock for us was that tidal flooding could become the new normal in the next 15 years; we didn’t think it would be so soon,” said Melanie Fitzpatrick, one of three researchers at the nonprofit who analyzed tide gauge data and sea level projections, producing soused prognoses for scores of coastal Americans. “If you live on a coast and haven’t seen coastal flooding yet, just give it a few years. You will.”