Virginia Institute of Marine Science


A better way to view storm tides in Chesapeake Bay

The Tidewatch network measures and forecasts the difference between the predicted astronomical tide and observed water levels at locations within Chesapeake Bay and along Virginia's seaside Eastern Shore. This difference—the residual—represents non-tidal, weather-induced change in water level including storm surge. The system was developed by emeritus professor John Boon of the Virginia Institute of Marine Science (VIMS).

Tidewatch charts provide an effective way to measure, visualize, and predict the magnitude and impacts of coastal flooding in a given location. The use of Tidewatch charts can help forecasters and coastal residents better prepare for storm tides and minimize their potential impacts. They are particularly useful for comparing storm tides in areas with different tidal ranges.

Tidewatch Stations

Access observations and forecasts for individual stations using the links or Google Map below, or view a single graph that compares water-level forecasts among all the stations.

View VIMS Tidewatch Network in a larger map
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