03:29 - Source: CNN
Meet teen climate activist Greta Thunberg
CNN
Now playing
03:29
Meet teen climate activist Greta Thunberg
Shutterstock
Now playing
01:13
What you can actually do to slow the climate crisis
Now playing
02:30
The Road to Change: America's Climate Crisis
Now playing
03:18
Climate crisis in Alaska is impacting the entire world
faces of climate change orig nws_00005521.jpg
faces of climate change orig nws_00005521.jpg
Now playing
01:46
How climate change is changing lives
climate change 97 percent consensus orig_00005513.jpg
climate change 97 percent consensus orig_00005513.jpg
Now playing
02:29
Scientists agree: Climate change is man-made
Democratic presidential candidate Elizabeth Warren participates in CNN's climate crisis town hall in New York on September 4, 2019.
Edward M. Pio Roda/CNN
Democratic presidential candidate Elizabeth Warren participates in CNN's climate crisis town hall in New York on September 4, 2019.
Now playing
03:28
See how candidates stood out in 7 hours of climate talk
Democratic presidential candidate Elizabeth Warren participates in a climate crisis town hall hosted by CNN in New York on September 4, 2019.
Edward M. Pio Roda/CNN
Democratic presidential candidate Elizabeth Warren participates in a climate crisis town hall hosted by CNN in New York on September 4, 2019.
Now playing
01:51
Warren: Where Trump is right now is a nightmare
CNN
Now playing
02:41
Biden: Military warned us of climate crisis danger
Democratic presidential candidate Bernie Sanders participates in CNN's climate crisis town hall in New York on September 4, 2019.
Edward M. Pio Roda/CNN
Democratic presidential candidate Bernie Sanders participates in CNN's climate crisis town hall in New York on September 4, 2019.
Now playing
01:46
Sanders: Trump's stance on climate change is idiotic
CNN
Now playing
02:03
Harris on Trump: Lead or get out of the way
CNN
Now playing
00:56
Yang: You know what's expensive? Poisoning our kids
Democratic presidential candidate Beto O'Rourke participates in CNN's climate crisis town hall in New York on September 4, 2019.
Edward M. Pio Roda/CNN
Democratic presidential candidate Beto O'Rourke participates in CNN's climate crisis town hall in New York on September 4, 2019.
Now playing
01:54
O'Rourke: We need to support the people of Puerto Rico
Democratic presidential candidate Pete Buttigieg participates in CNN's climate crisis town hall in New York on September 4, 2019.
Edward M. Pio Roda/CNN
Democratic presidential candidate Pete Buttigieg participates in CNN's climate crisis town hall in New York on September 4, 2019.
Now playing
01:25
Pete Buttigieg: I would ask Trump to step aside
Democratic presidential candidate Elizabeth Warren participates in a climate crisis town hall hosted by CNN in New York on September 4, 2019.
Edward M. Pio Roda/CNN
Democratic presidential candidate Elizabeth Warren participates in a climate crisis town hall hosted by CNN in New York on September 4, 2019.
Now playing
02:25
Warren: This is what fossil fuel wants us talking about
julian castro 9.4
CNN
julian castro 9.4
Now playing
03:23
Student calls out Julian Castro's record on fracking
CNN —  

Coastal communities across the United States saw an uptick in flooding from high tides last year – and it’s not likely to get any better, the National Oceanic and Atmospheric Administration says.

In a report Wednesday, the agency says that last year tied the 2015 record for a national median of five days of high-tide flooding. Twelve locations broke flooding records, including Washington, Annapolis and Baltimore.

The agency cited El Niño and rising sea levels as reasons why “it no longer takes a strong storm or hurricane to cause flooding in many coastal areas” and warned that people should expect even more in the future.

The effects of high-tide flooding include disrupted traffic along East Coast roadways, degraded septic system functionality in South Florida and salted farmlands in coastal Delaware and Maryland, the NOAA said.

NOAA has identified more than 40 locations where high-tide flooding trends reveal “significant acceleration” along the West and East coasts. The data suggests that coastal impacts will soon become “chronic rather than sporadic.”

In 2019, the Northeast Atlantic is expected to experience a median of eight days of flooding, a 140% increase since 2000. Flooding in the Southeast is set to increase 190% since 2000 to a median of five days, and the western Gulf Coast is expected to increase 130% to a median of six days.

“Once communities realize they are susceptible to high tide flooding, they need to begin to address the impacts, which can become chronic rather quickly,” William Sweet, an oceanographer at NOAA’s Center for Operational Oceanographic Products and Services and lead author of the report, said in a statement.

“Communities find themselves not knowing what to expect next year and the decades to come, which makes planning difficult. Our high tide projections can play a vital role in helping them plan mitigation and other remedies.”

The report projects that, by 2050, the United States will experience 25 to 75 days of high-tide flooding.