Climate change could be even worse for Boston than previously thought

Post date: Jun 23, 2016 3:20:36 PM

By David Abel GLOBE STAFF JUNE 22, 2016

The consequences of climate change on Boston are expected to be far more calamitous than previous studies have suggested, a new report commissioned by the city says.

In the worst-case scenario, sea levels could rise more than 10 feet by the end of the century — nearly twice what was previously predicted — plunging about 30 percent of Boston under water. Temperatures in 2070 could exceed 90 degrees for 90 days a year, compared with an average of 11 days now.

And changes in precipitation could mean a 50 percent decline in annual snowfall, punctuated by more frequent heavy storms such as nor’easters.

The report, by scientists from the University of Massachusetts and other local universities, has raised concerns in City Hall just two weeks after Mayor Martin J. Walsh attended a climate summit in Beijing.