Mid-Atlantic
Ewell
Smith Island · Maryland · NOAA station 8571117 · Tide predictions
37.9950, -76.0317
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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
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H = high tide · L = low tide · highs & lows in local time
On the water nearby
Potomac buoy · 17 mi W · Station 44042
Wind & wave reports →
Nearby tide stations
- Holland Island Bar Light · 6.2 mi NW
- Crisfield, Little Annemessex River · 9.3 mi E
- Ape Hole Creek, Pocomoke Sound · 11.7 mi E
- Tangier Island · 11.7 mi S
- Colburn Creek, Big Annemessex River · 13.0 mi E
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 2.3 ft — Fri Oct 1 · 2:32 PM
Lowest predicted low tide: -0.5 ft — Sat Jan 23 · 7:19 AM
Biggest single-day swing: 2.2 ft on Fri Jan 22
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Sat Jan 23 | 7:19 AM | -0.5 ft |
| Sun Jan 24 | 8:12 AM | -0.5 ft |
| Mon Jan 25 | 9:04 AM | -0.4 ft |
| Sun Feb 21 | 7:07 AM | -0.4 ft |
| Mon Feb 22 | 7:57 AM | -0.3 ft |
| Tue Jan 26 | 9:58 AM | -0.3 ft |
| Wed Dec 15 | 7:41 AM | -0.3 ft |
| Thu Dec 16 | 8:33 AM | -0.3 ft |
| Sat Feb 20 | 6:50 PM | -0.3 ft |
| Thu Jan 21 | 6:24 PM | -0.3 ft |
162 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
Ewell, Smith Island 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.