PAINTED SHORES
MENUBegin
ME · NOAA 8410140 · 44° 54′ N · 66° 59′ W
Tides at Eastport
A semidiurnal tide (form factor 0.09), spring this week. Predicted from the station's 34 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, 5:00 PM | Low | -0.9 ft |
| Sun, Oct 25, 11:01 PM | High | 19.6 ft |
| Mon, Oct 26, 5:18 AM | Low | -0.3 ft |
| Mon, Oct 26, 11:18 AM | High | 20.8 ft |
| Mon, Oct 26, 5:45 PM | Low | -1.5 ft |
| Mon, Oct 26, 11:45 PM | High | 19.9 ft |
| Tue, Oct 27, 6:02 AM | Low | -0.4 ft |
| Tue, Oct 27, 12:01 PM | High | 21.2 ft |
| Tue, Oct 27, 6:31 PM | Low | -1.8 ft |
| Wed, Oct 28, 12:31 AM | High | 19.8 ft |
| Wed, Oct 28, 6:48 AM | Low | -0.3 ft |
| Wed, Oct 28, 12:47 PM | High | 21.2 ft |
| Wed, Oct 28, 7:19 PM | Low | -1.7 ft |
| Thu, Oct 29, 1:19 AM | High | 19.5 ft |
| Thu, Oct 29, 7:36 AM | Low | 0.1 ft |
| Thu, Oct 29, 1:37 PM | High | 20.9 ft |
| Thu, Oct 29, 8:10 PM | Low | -1.3 ft |
| Fri, Oct 30, 2:11 AM | High | 18.9 ft |
| Fri, Oct 30, 8:29 AM | Low | 0.6 ft |
| Fri, Oct 30, 2:30 PM | High | 20.2 ft |
| Fri, Oct 30, 9:04 PM | Low | -0.7 ft |
| Sat, Oct 31, 3:07 AM | High | 18.3 ft |
| Sat, Oct 31, 9:26 AM | Low | 1.2 ft |
| Sat, Oct 31, 3:28 PM | High | 19.5 ft |
| Sat, Oct 31, 10:03 PM | Low | 0.0 ft |
| Sun, Nov 1, 3:07 AM | High | 17.7 ft |
| Sun, Nov 1, 9:27 AM | Low | 1.8 ft |
| Sun, Nov 1, 3:31 PM | High | 18.7 ft |
The constants that make it
| Constituent | Amplitude | Phase |
|---|---|---|
| M2 | 8.7 ft | 98.4° |
| N2 | 1.8 ft | 67.0° |
| S2 | 1.4 ft | 138.8° |
| L2 | 0.5 ft | 141.0° |
| K1 | 0.5 ft | 195.5° |
| NU2 | 0.4 ft | 73.6° |
| O1 | 0.4 ft | 176.3° |
| K2 | 0.4 ft | 138.3° |
The eight largest of 34. Source: NOAA CO-OPS harmonic constituents for 8410140, public domain.
The year as a print
The last two days, measured
At Sun, Oct 25 16:24 the gauge read -0.1 ft, 0.3 ft above the computed curve: wind and pressure, not the moon. The widest gap of the two days was 1.6 ft, at Sat, Oct 24 02:06.
- 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 | 0.27 ft | 0.29 ft | 0.29 ft |
| Sun, Oct 25 06:00 | 2.93 ft | 2.84 ft | 2.84 ft |
| Sun, Oct 25 07:00 | 7.12 ft | 7.20 ft | 7.21 ft |
| Sun, Oct 25 08:00 | 11.92 ft | 12.15 ft | 12.16 ft |
| Sun, Oct 25 09:00 | 16.58 ft | 16.69 ft | 16.70 ft |
| Sun, Oct 25 10:00 | 19.69 ft | 19.62 ft | 19.63 ft |
| Sun, Oct 25 11:00 | 19.97 ft | 19.92 ft | 19.93 ft |
| Sun, Oct 25 12:00 | 17.57 ft | 17.59 ft | 17.60 ft |
| Sun, Oct 25 13:00 | 13.79 ft | 13.53 ft | 13.55 ft |
| Sun, Oct 25 14:00 | 9.43 ft | 8.79 ft | 8.81 ft |
| Sun, Oct 25 15:00 | 4.99 ft | 4.18 ft | 4.19 ft |
| Sun, Oct 25 16:00 | 1.09 ft | 0.57 ft | 0.58 ft |
Measured heights from NOAA CO-OPS station 8410140, preliminary, above mean lower low water. The print carries the computed curve only: one year, no weather.