Updated every 6 hours; updated 2026-10-19 04:56 UTC. Links maintain the same address and are overwritten upon each update at about 00:20, 06:20, 12:20 and 18:20 UTC.
Disclaimer: StormSense™ Predictive Plots are computer-generated operational storm tide forecasts; the user assumes any and all risk.
Forecasts come from the NWS Probabilistic Extra-Tropical Storm Surge model (P-ETSS), interpolated to 6 minutes; the shaded cone is its 10%–90% range. Stations without a P-ETSS point show Tidewatch's 36-hour forecast for now.
NAVD88 charts show the NWS flood categories (Action, Minor, Moderate, Major) from the National Water Prediction Service and the MLLW line; MLLW charts show the tidal datums. Click a line's label on the right of a chart to hide or show it.
Field descriptions for the CSV and JSON downloads: fore72: MLLW PDF JSON, NAVD88 PDF JSON; 7day: MLLW PDF JSON, NAVD88 PDF JSON; 30day: MLLW PDF JSON, NAVD88 PDF JSON.