US Harbors | Tide Charts, Marine Forecast, Coastal Flooding

US Harbors is the #1 Source for Tide Charts and Coastal Information for over 1,400 harbors in 30 coastal states. Our curated data helps you plan smarter, enjoy your time on the water, and stay ahead of rapidly changing tides, storms, and flooding.

Tide Charts

US Harbors illustrates tide forecasts with our simple, intuitive charts. Easily scan the highs and lows online or print a convenient monthly tide chart for the boat or office.

Weather

US Harbors delivers weather predictions with a focus on marine forecasts, buoy data, weather alerts, and onshore forecasts for harbors near you that include wind speed and direction, relative humidity, and more.

High Tide Flooding

Each month, we publish a high-tide flooding report for forecasted harbors across the country. Look for harbors near you to know when extreme high tides could cause flooding. Sign up for our newsletter to be alerted to new high tide flooding reports.

Latest Coastal News Filter

NOAA's GOES West satellite captured this image of three tropical cyclones — Hurricanes Fausto and Genevieve and Typhoon Dolphin — swirling simultaneously in the Pacific Ocean. The image was taken on Tuesday, July 27, at 3:30 PM PDT/ 22:30 UTC. None of the three tropical cyclones made landfall in the United States. Fausto contributed to high surf conditions in Hawaii, and Genevieve also brought high surf to southern California. Typhoon Dolphin continued its track west toward Asia. (Image credit: NOAA Satellites)

Pacific Hurricanes Fausto and Genevieve actually had origins near Africa

8/13/2026

By noaa.gov, noaa.gov. It may be surprising, but two of the hurricanes that swirled in the Pacific last week began their journeys thousands of miles away off the western coast of Africa. Both Hurricanes Fausto and Genevieve developed from tropical waves, which are areas of disturbed weather that rolled off… SEE MORE

High-performance computers are crucial tools for weather and climate forecast models. (Image credit: iStock)

NOAA’s Use Of Cloud Infrastructure Grows To Include Weather Prediction Models

8/1/2026

By noaa.gov, noaa.gov. In the latest innovation to NOAA’s operational weather forecast model technology, the agency announced today that it is moving its high-performance supercomputing operations to the commercial cloud. This transition of NOAA’s Weather and Climate Operational Supercomputing System (WCOSS) supports current and future improvements to NOAA’s suite of… SEE MORE

The image depicts two individuals on the deck of a research vessel at sea, engaged in deploying a piece of oceanographic equipment that measures temperature and depth

Why NOAA Matters: Maine's Island Institute Makes the Case

7/30/2026

Why NOAA Matters: Maine’s Island Institute Makes the Case Every mariner who checks a forecast before leaving the dock, every harbormaster tracking a king tide, and every fishing family checking for water temperature shifts is relying, often without thinking about it, on the National Oceanic and Atmospheric Administration, commonly shortened… SEE MORE

In The Zone: The Sabre 51 Salon Express

By US Harbors When Sabre Yachts completed construction of hull number 200 of its 48 Salon Express model, more than half the crew who built it had also worked on hull number one. The average tenure on that line was 12 years, and they produced a yacht that proved to… Learn More

Sudden Danger: The Science And Stakes of Flash Flood Forecasting

7/2/2026

By research.noaa.gov, research.noaa.gov. Though not as feared as tornadoes, hail, or lightning, flash floods are one of the deadliest weather hazards in the United States. While the number of fatalities can vary dramatically from year to year, the national average for flood deaths is 88. Lightning accounts for an average of… SEE MORE

This image is of a salt marsh in coastal Maine. The high-resolution, land cover mapping NOAA has done for the state captures the tidal creeks, pannes, pools and vegetation with far greater precision and detail than past, 30-meter mapping. (Image credit: NOAA)

The Coast Is Clear-er: NOAA Unveils New Land Cover Maps 900 Times Greater In Detail

6/7/2026

By noaa.gov, noaa.gov. NOAA is releasing new, higher-resolution land cover maps for coastal Alabama, Mississippi, Northeastern Ohio, Rhode Island, and the Puget Sound in Washington. The data will be made available through the Digital Coast website and will provide these communities with better information for decisions related to stormwater management, water quality… SEE MORE

A NOAA satellite view of a massive Hurricane Erin churning off the U.S. East Coast taken August 20, 2025. (Image credit: NOAA Satellites)

NOAA Predicts Below-Normal 2026 Atlantic Hurricane Season

5/25/2026

By noaa.gov, noaa.gov. Early preparation essential to staying safe all season. Forecasters with NOAA’s National Weather Service are predicting a below-normal hurricane season for the Atlantic basin this year. NOAA’s outlook for the 2026 Atlantic hurricane season, which runs June 1 to November 30, predicts a 35% chance of a… SEE MORE

High-tide flooding on October 24, 2017, submerged roads and parking areas along Dock Street, in the historic heart of Annapolis, Maryland. Photo by Will Parson, Chesapeake Bay Program. Used with permission.

El Niño and High Tide Flooding, a Possible Double Whammy for Some Coastal Communities in 2026

5/24/2026

By oceanservice.noaa.gov, oceanservice.noaa.gov. NOAA’s National Weather Service is predicting El Niño is likely to emerge by July 2026 and continue through the winter, and for many locations in the U.S. this could mean more high tide flooding. To understand why more flooding is expected, it helps to understand what El Niño is and… SEE MORE

Image of Hurricane Milton from NOAA's GOES-16 satellite on Oct. 8, 2024. (Image credit: NOAA)

National Hurricane Center to Issue New Forecast Cone Graphics for 2026 Hurricane Season

4/10/2026

By noaa.gov, noaa.gov. Other product enhancements include Hawaii Storm Surge Watches & Warnings As part of a suite of product improvements for the 2026 hurricane season [PDF], NOAA’s National Hurricane Center (NHC) is implementing two new tropical products and services: a new operational hurricane track cone map, and new storm surge alerts… SEE MORE

SEE ALL LATEST COASTAL NEWS

Featured Harbors

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Who Is US Harbors?

We are a community of boaters, fishermen, surfers, scientists, waterfront homeowners, along with mariners and coastal professionals who work and live by the water. It is the project of a committed team who understand how conditions influence work and play on the coast because we live by the tides just like you. Our home port is Camden, Maine, one of over 1,400 harbors we serve.

Built For People Who Live By The Tides