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.

Wind speed forecast bar graph

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.

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- Bill P. Long Island, NY

Latest Coastal News Filter

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

A Bering Sea pollock fleet prepares to depart Dutch Harbor, Alaska, for another season of the largest commercial fishery in the United States. (Image credit: S. Zmolek/NOAA)

NOAA Strengthens Commitment to World-Class Tsunami Monitoring and Detection in Pacific

4/2/2026

By noaa.gov, noaa.gov. National Mesonet Program ensures seismic detection continues to operate in real time A new agreement between NOAA, the Alaska Mesonet and the seismic network operated by the University of Alaska-Fairbanks Alaska Earthquake Center (UAF AEC) is funding nine AEC-owned seismic stations that support near-real-time tsunami threat information.… SEE MORE

waves crash over the breakwater at high tide, boston skyline in distance

U.S. Coastal Sea Level Rise Rate Doubled in Past Century, New Study Finds

12/24/2025

By Woods Hole Oceanographic Institution, whoi.edu. For harbor operators and coastal infrastructure planners, accurate sea level data is essential for making critical decisions about dock elevations, bulkhead construction, and long-term facility planning. A new scientific study highlighting significant acceleration in U.S. coastal sea level rise has important implications for harbors… SEE MORE

NOAA’s GOES-19 satellite captured images of hurricanes Imelda (left) and Humberto (right) churning off the U.S. East Coast on Sept. 30, 2025. (Image credit: NOAA Satellites)

2025 Atlantic Hurricane Season Marked by Striking Contrasts

11/30/2025

By noaa.gov, noaa.gov. Seasonal activity fell within NOAA’s predicted ranges The 2025 Atlantic hurricane season, which officially ends on November 30, was notable for its striking contrast — wavering between periods of relative calm and bursts of intense activity, generating very powerful storms. Overall, the season fell within the predicted ranges… SEE MORE

Image Credits: NOAA.

Prediction Remains on Track for Above-Normal Atlantic Hurricane Season

8/19/2025

By noaa.gov. As the 2025 Atlantic Hurricane Season enters its historical peak, atmospheric and oceanic conditions continue to favor an above-normal season as NOAA first predicted in May. Forecasters from NOAA’s National Weather Service updated the number of expected named storms to 13-18 (with winds of 39 mph or greater), of which… SEE MORE

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