Forecasts of water level inundation due to the combination of wave run-up, tides, winds, and ocean currents provide advance notice of the potential for high sea level. Wave run-up is the maximum height reached by waves along the shore relative to low tide (mean lower low water (MLLW), which is the average height of the lowest tide recorded at each site). Click on an icon to view a plot of observed and predicted wave run-up (dotted line) and sea level (solid line). These forecasts can alert locations up to six days in advance of the potential for beach flooding and/or overtopping of nearby roadways.
caution: These forecasts are experimental and no promise of accuracy is implied; especially, the forecast is explicitly not accurate when either a tsunami, tropical storm, or hurricane warning is in effect. In these latter cases, see either tsunamis or tropical storms/hurricanes.
note: See also "waves" and "tide and water level" below for near real-time observations of waves and sea levels.