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ME · NOAA 8413320 · 44° 24′ N · 68° 12′ W
Tides at Bar Harbor
A semidiurnal tide (form factor 0.14), spring this week. Predicted from the station's 33 harmonic constants; heights above mean lower low water, times in station time. Weather is not in these numbers.
This week
| When | Water | Height |
|---|---|---|
| Sun, Oct 25, 4:42 PM | Low | -0.6 ft |
| Sun, Oct 25, 10:51 PM | High | 11.4 ft |
| Mon, Oct 26, 4:55 AM | Low | -0.0 ft |
| Mon, Oct 26, 11:04 AM | High | 12.4 ft |
| Mon, Oct 26, 5:27 PM | Low | -1.0 ft |
| Mon, Oct 26, 11:36 PM | High | 11.5 ft |
| Tue, Oct 27, 5:38 AM | Low | -0.0 ft |
| Tue, Oct 27, 11:47 AM | High | 12.7 ft |
| Tue, Oct 27, 6:12 PM | Low | -1.2 ft |
| Wed, Oct 28, 12:23 AM | High | 11.5 ft |
| Wed, Oct 28, 6:24 AM | Low | 0.1 ft |
| Wed, Oct 28, 12:34 PM | High | 12.8 ft |
| Wed, Oct 28, 7:01 PM | Low | -1.2 ft |
| Thu, Oct 29, 1:12 AM | High | 11.3 ft |
| Thu, Oct 29, 7:13 AM | Low | 0.3 ft |
| Thu, Oct 29, 1:23 PM | High | 12.6 ft |
| Thu, Oct 29, 7:54 PM | Low | -1.0 ft |
| Fri, Oct 30, 2:05 AM | High | 10.9 ft |
| Fri, Oct 30, 8:06 AM | Low | 0.6 ft |
| Fri, Oct 30, 2:18 PM | High | 12.2 ft |
| Fri, Oct 30, 8:51 PM | Low | -0.6 ft |
| Sat, Oct 31, 3:03 AM | High | 10.6 ft |
| Sat, Oct 31, 9:06 AM | Low | 0.9 ft |
| Sat, Oct 31, 3:18 PM | High | 11.8 ft |
| Sat, Oct 31, 9:52 PM | Low | -0.2 ft |
| Sun, Nov 1, 3:07 AM | High | 10.3 ft |
| Sun, Nov 1, 9:12 AM | Low | 1.2 ft |
| Sun, Nov 1, 3:24 PM | High | 11.3 ft |
The constants that make it
| Constituent | Amplitude | Phase |
|---|---|---|
| M2 | 5.2 ft | 91.9° |
| N2 | 1.1 ft | 61.4° |
| S2 | 0.8 ft | 128.1° |
| K1 | 0.5 ft | 193.8° |
| O1 | 0.4 ft | 174.4° |
| L2 | 0.3 ft | 135.4° |
| NU2 | 0.2 ft | 67.6° |
| K2 | 0.2 ft | 128.7° |
The eight largest of 33. Source: NOAA CO-OPS harmonic constituents for 8413320, public domain.
The year as a print
The last two days, measured
At Sun, Oct 25 16:24 the gauge read -0.1 ft, 0.4 ft above the computed curve: wind and pressure, not the moon. The widest gap of the two days was 1.3 ft, at Sat, Oct 24 02:24.
- Computed here, from the constants
- NOAA's own prediction
- Measured at the gauge, every six minutes
The last twelve hours as numbers
| Station time | Measured | Computed here | NOAA |
|---|---|---|---|
| Sun, Oct 25 05:00 | 0.67 ft | 0.57 ft | 0.56 ft |
| Sun, Oct 25 06:00 | 2.36 ft | 2.30 ft | 2.30 ft |
| Sun, Oct 25 07:00 | 5.05 ft | 5.05 ft | 5.06 ft |
| Sun, Oct 25 08:00 | 8.09 ft | 8.06 ft | 8.07 ft |
| Sun, Oct 25 09:00 | 10.45 ft | 10.49 ft | 10.51 ft |
| Sun, Oct 25 10:00 | 11.71 ft | 11.77 ft | 11.79 ft |
| Sun, Oct 25 11:00 | 11.71 ft | 11.61 ft | 11.63 ft |
| Sun, Oct 25 12:00 | 10.17 ft | 10.02 ft | 10.04 ft |
| Sun, Oct 25 13:00 | 7.65 ft | 7.32 ft | 7.34 ft |
| Sun, Oct 25 14:00 | 4.49 ft | 4.20 ft | 4.22 ft |
| Sun, Oct 25 15:00 | 1.89 ft | 1.48 ft | 1.50 ft |
| Sun, Oct 25 16:00 | 0.20 ft | -0.19 ft | -0.18 ft |
Measured heights from NOAA CO-OPS station 8413320, preliminary, above mean lower low water. The print carries the computed curve only: one year, no weather.