Mid-Atlantic
Fort McHenry Marsh
Maryland · NOAA station 8574683 · Tide predictions
39.2617, -76.5850
Loading live tide data…
48-hour outlook
Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.
Drawn from the high/low predictions — NOAA publishes high/low only for this station.
The next seven days
Loading…
H = high tide · L = low tide · highs & lows in local time
On the water nearby
Baltimore buoy · 4 mi SE · Station 44080
Wind & wave reports →
Nearby tide stations
- Baltimore, Fort McHenry · 0.5 mi NE
- Hawkins Point · 4.6 mi SE
- Stony Creek · 7.5 mi SE
- North Point · 8.7 mi SE
- Cornfield Creek, Magothy River · 13.5 mi SE
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 2.2 ft — Sun Jul 4 · 7:29 AM
Lowest predicted low tide: -0.6 ft — Fri Jan 22 · 12:06 PM
Biggest single-day swing: 2.0 ft on Fri Jan 22
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Fri Jan 22 | 12:06 PM | -0.6 ft |
| Thu Jan 21 | 11:03 AM | -0.6 ft |
| Sat Jan 23 | 1:07 PM | -0.6 ft |
| Wed Jan 20 | 9:55 AM | -0.5 ft |
| Sun Jan 24 | 2:07 PM | -0.5 ft |
| Fri Feb 19 | 11:06 AM | -0.5 ft |
| Sat Feb 20 | 12:07 PM | -0.5 ft |
| Tue Jan 19 | 8:45 AM | -0.4 ft |
| Thu Feb 18 | 9:59 AM | -0.4 ft |
| Sun Feb 21 | 1:06 PM | -0.4 ft |
146 minus tides (below 0 ft) are predicted here in 2027. The table shows up to the 10 lowest that fall between 7 AM and 7 PM — the ones worth planning a clam dig or tidepool walk around.
About this station
Fort McHenry Marsh is one of NOAA's reference tide stations — its predictions are computed directly from harmonic analysis of water levels observed here, and other nearby stations are calculated from it.
Barrier islands, big bays, and river tides: Chesapeake and Delaware bays carry the tide deep inland, and a nor'easter can hold water in, or blow it out, for days at a time.