Before you do anything else, you might want to explore coastal areas threatened by sea level rise…

SEA LEVEL RISE & FLOODING

SEA LEVEL RISE & FLOODING

NASA says that seas have risen since 1992 by 3 inches, with some locations rising more than 9 inches, and anticipates an unavoidable rise of several feet in the future.

Caused by four main factors, of which two are global (ice melting and warming waters that expand) and two are local (a slowing Gulf Stream and sinking land), the amount and speed of sea level rise varies by location.

The consequences are staggering, creating more dangerous and powerful hurricanes and storm surges, and resulting in more intense and frequent flooding, and devastation to coastal communities. In the United States, almost 40 percent of the population live in relatively high-population-density coastal areas, where sea level plays a role in flooding, shoreline erosion, and hazards from storms. You might be surprised to learn of the creation of ghost forests. 

You might also want to watch a 4-part PBS series Sinking Cities which takes a look into how four cities (Miami, London, Tokyo, & New York) — all at particular risk — are adapting.

Flood Factor has a fascinating site where you can explore your flood risk by entering an address.

CREDIT: IPCC

CURRENT NEWS

KEY RESOURCES

U.S. high tide flooding breaks records in multiple locations

08/02/22
Coastal communities in three locations along the Atlantic and Pacific coasts saw record high tide flooding last year — a trend that is expected to continue into 2023 and beyond without improved flood defenses, according…

What is high tide flooding?

07/18/22
As relative sea level rises, it no longer takes a strong storm or a hurricane to cause coastal flooding. High tide flooding occurs when sea level rise combines with local factors to push water levels…

Sea Level Latest Measurements

07/12/22
Sea level rise is caused primarily by two factors related to global warming: the added water from melting ice sheets and glaciers and the expansion of seawater as it warms. The first graph tracks the…

Weather Report: Why Do the Seas Rise?

05/16/22
The phrases “climate change” and “sea level rise” nearly go hand in hand, particularly when discussed in coastal communities like Martha’s Vineyard. Many of the cliché images of global warming often involve the seas, whether…

Sea Level Trends

04/18/22
The sea level trends measured by tide gauges that are presented here are local relative sea level (RSL) trends as opposed to the global sea level trend. Tide gauge measurements are made with respect to…

Interactive map: How has local sea level in the United States changed over time?

03/02/22
Global sea level has risen between 6 and 8 inches (15-20 cm) over the last 100 years. About one third of the increase is due to the thermal expansion of ocean water as it has…

State Of The Beach Report

10/31/21
Greta is known for her famous speeches before world leaders. She recently spoke at COP 26 where delegates from around the world are charged with fulfilling goals of the Paris Agreement and the UN Framework…

Animation: Global Sea Level Change (1992-2017)

10/19/21
This animation shows how global sea levels have risen more than 80 millimeters (3.15 inches) over the past three decades, which is like covering the U.S. in about 4 meters (about 13 feet) of water…

Global Climate Change Vital Facts

09/01/21
Sea level rise is caused primarily by two factors related to global warming: the added water from melting ice sheets and glaciers and the expansion of seawater as it warms. The first graph tracks the…

Coming Storms: Climate Change And The Rising Threat To America’s Coastal Seniors

03/21/21
A new Climate Central sea-level-rise analysis identifies the assisted living and nursing homes at risk in five states. Experts say waiting to evacuate during storms is not the answer.

Science Empowering Communities In The Face Of Flooding

10/06/20
Surging Waters: Science Empowering Communities in the Face of Flooding is a report produced by AGU, a global not-for-profit scientific society dedicated to advancing the Earth and space sciences for the benefit of humanity.

Storm Surge Inundation Map

06/12/20
This story map illustrates historical hurricane tracks, strike frequency, and potential areas of coastal flooding and inundation from storms by combining the National Hurricane Center’s (NHC’s) hurricane strike dataset.

What is Digital Coast?

06/11/20
This NOAA-sponsored website is focused on helping communities address coastal issues and has become one of the most-used resources in the coastal management community. The dynamic Digital Coast Partnership, whose members represent the website’s primary…

Association of State Floodplain Managers

06/10/20
The mission of ASFPM is to promote education, policies and activities that mitigate current and future losses, costs and human suffering caused by flooding, and to protect the natural and beneficial functions of floodplains -…

Sea Level Rise Adaptation

03/28/20
Sea level rise is a slow-moving threat, but it demands immediate action. Global heating creates extreme hazards that cause significant harm to people, homes, infrastructure, and the environment. In California, we are already facing many…

The Great Flood of 2019: A Complete Picture of a Slow-Motion Disaster

02/05/20
This year’s flooding across the Midwest and the South affected nearly 14 million people, yet the full scale of the slowly unfolding disaster has been difficult to fathom. To visualize just how extensive it was,…

Going under: Long wait times for post-flood buyouts leave homeowners underwater

11/18/19
By the end of this century, as many as 13 million people in the United States will see their homes affected by sea level rise. Millions more who live, work, or travel through coastal or…

Understanding FEMA Flood Maps and Limitations

03/21/19
Flooding in the United States (U.S.) has cost over $1 trillion in inflation adjusted dollars since 1980 and represents more than 63% of the cost associated with all billion dollar or more natural disasters.1 It…

SeaLevelRise.org

10/29/19
People truly need to understand the causes of sea level rise and the impact it has on our communities. By working together, we can develop smart solutions to protect against this ever-growing problem. Our communities can make…

Flood IQ

10/01/19
Flood iQ covers the East coast and the Gulf coast, and visualizes your risk of sea level rise flooding today and up to 15 years in the future. It is a web based application created…

NASA – Sea level change

09/11/19
Find a ton of information here on sea level, including news & features, a data analysis tool, a virtual earth system laboratory, and more.

Sea Level Rise Project

09/10/19
Climate Central's flagship sea level project allows you to search or navigate interactive maps to see areas below different amounts of sea level rise and flooding — down to neighborhood scale — matched with area timelines of…

MORE NEWS

Antarctica’s Effect on Sea Level Rise in Coming Centuries

04/25/19  
There are two primary causes of global mean sea level rise - added water from melting ice sheets and glaciers, and the expansion of sea water as it warms. The melting of Antarctica's ice sheet…

After a $14-Billion Upgrade, New Orleans’ Levees Are Sinking

By Thomas Frank  Photo by Mario Tama   04/11/19  
The $14 billion network of levees and floodwalls that was built to protect greater New Orleans after Hurricane Katrina was a seemingly invincible bulwark against flooding.

The Fight to Tame a Swelling River With Dams That May Be Outmatched by Climate Change

By Tyler J. Kelley  Photo by Ackerman and Tim Gruber   03/21/19  
There were no good choices for John Remus, yet he had to choose. Should he try to hold back the surging Missouri River but risk destroying a major dam, potentially releasing a 45-foot wall of…

States, flooding: The Fight to Tame a Swelling River With Dams That May Be Outmatched by Climate Change

By Tyler J. Kelley  Photo by Jenn Ackerman and Tim Gruber   03/21/19  
Along the Missouri, John Remus controls a network of Dams that dictates the fate of millions. 'It was not designed to handle this.'

Antarctic ice loss sextupled since 1970s, study finds

By Chris Mooney and Brady Dennis  Photo by Mario Tama   01/14/19  
Antarctic glaciers have been melting at an accelerating pace over the past four decades thanks to an influx of warm ocean water — a startling new finding that researchers say could mean sea levels are…

2017’s Extreme Heat, Flooding Carried Clear Fingerprints of Climate Change

By John H. Cushman Jr.  Photo by Scott Olson   12/10/18  
Some weather extremes are now 2-3 times more likely because of global warming, research shows. Several 2017 events would have been virtually impossible without it...

Water stuck in Glaciers May Change Sea Level Predictions

By Danielle Torrent Tucker-Stanford  Photo: Getty Images   10/24/18  
Researchers have discovered water stored within a glacier in Greenland. The water storage has been a missing component for models aiming to predict how melting glaciers will affect the planet.

Water stuck in Glaciers May Change Sea Level Predictions

By Danielle Torrent Tucker-Stanford   10/24/18  
Researchers have discovered water stored within a glacier in Greenland. The water storage has been a missing component for models aiming to predict how melting glaciers will affect the planet.

Miami Will Be Underwater Soon. Its Drinking Water Could Go First

By Christopher Flavelle  Photo: Anastasia Samoylova   08/29/18  
The city has another serious water problem.
EOS

Rising Seas Increase Methane Emissions from the Mouths of Rivers

By Emily Underwood  Photo: USGS EROS Data Center   08/02/18  
Drowned river deltas exhale large quantities of greenhouse gas, new study finds.

Sea level rise due to Antarctic ice melt has ‘tripled over past five years’

By Daisy Dunne   06/13/18  
The rate of sea level rise resulting from the melting of the Antarctic ice sheet has tripled over the past five years, according to new research from a global team of scientists.

Norfolk, Virginia: An Immediate Threat

06/03/18  
Sea levels are rising everywhere, but the Navy town of Norfolk, Virginia has it worse. The land is sinking as much as an inch-and-a-half per decade. Scientists also believe that a slowing Gulf Stream is…

2.5 Million Miamians Could Become Refugees Due to Sea-Level Rise, Study Says

By Jerry Iannelli   04/25/17  
Now that Cuban migration into Miami has slowed, the city's Republican legislators have pretty much decided that they hate refugees. State Rep. Carlos Trujillo in 2016 tried to give Gov. Rick Scott military power to…

Groundwater Depletion Accelerates Sea-Level Rise

By Richard A. Lovett   06/01/12  
Groundwater depletion will soon be as important a factor in contributing to sea-level rise as the melting of glaciers other than those in Greenland and Antarctica, scientists say.

Harry Cohen’s climate resiliency plan is ‘critical’ to fight sea level rise

By Janelle Irwin Taylor   02/21/19  
Tampa mayoral candidate Harry Cohen wants to ensure the city’s climate future by ensuring stormwater system upgrades are completed, continuing to ban nitrate fertilizers during rainy months and incentivizing environmentally friendly development and redevelopment. Cohen,…

Scientists triple their estimates of the number of people threatened by rising seas

By Chris Mooney  Photo by Matt McClain/The Washington Post   10/29/19  
150 million could live below the high tide line by 2050, new research finds.

Sea Level Rise Is Creeping into Coastal Cities. Saving Them Won’t Be Cheap.

By Nicholas Kusnetz   12/28/17  
Norfolk and Miami frequently see nuisance flooding now. The cost to protect them and other coastal cities in the future is rising with the tide.

Maryland’s governor joins coalition focused on flooding, sea level rise

By Kate Ryan   01/09/20  
Maryland Gov. Larry Hogan has joined the American Flood Coalition, a nonpartisan group focused on the threat from sea level rise and flooding.

Free the Floodplains!

Yen Duong  Photo: Elaine Aldridge   11/11/19  
Millions of Americans live at risk of flooding, but slow federal flood buyouts drain precious time and resources. How one community is rising above the storm, taking matters into their own hands, and returning the…

Building a better algorithm to predict flood risk in the age of climate change

09/30/19  
Flood iQ covers the East coast and the Gulf coast, and visualizes your risk of sea level rise flooding today and up to 15 years in the future. It is a web based application created…

For the Midwest, Epic Flooding Is the Face of Climate Change

By Megan Molteni  Photo: Scott Olson/Getty Images   05/24/19  
Fierce storms lashed across the central US this week, unleashing hundreds of powerful tornadoes that carved a path of destruction through parts of Missouri and Oklahoma Wednesday night, and left at least three dead. While…

In Annapolis, the tide has come in or out 540,000 times, but now it’s worrisome

By Ashley Halsey III  Photo by Marvin Joseph/Washington Post   04/08/19  
When a city has been sitting by the Chesapeake Bay for 370 years, the tide has rolled in or out again more than 540,000 times, but only lately has it been the cause of much…