PAINTED SHORES
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NJ · NOAA 8531680 · 40° 28′ N · 74° 01′ W
Tides at Sandy Hook
A semidiurnal tide (form factor 0.19), 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, 7:52 PM | High | 5.2 ft |
| Mon, Oct 26, 2:04 AM | Low | -0.1 ft |
| Mon, Oct 26, 8:09 AM | High | 6.1 ft |
| Mon, Oct 26, 2:50 PM | Low | -0.2 ft |
| Mon, Oct 26, 8:37 PM | High | 5.2 ft |
| Tue, Oct 27, 2:49 AM | Low | -0.1 ft |
| Tue, Oct 27, 8:52 AM | High | 6.2 ft |
| Tue, Oct 27, 3:39 PM | Low | -0.2 ft |
| Tue, Oct 27, 9:24 PM | High | 5.1 ft |
| Wed, Oct 28, 3:35 AM | Low | -0.1 ft |
| Wed, Oct 28, 9:39 AM | High | 6.1 ft |
| Wed, Oct 28, 4:28 PM | Low | -0.2 ft |
| Wed, Oct 28, 10:16 PM | High | 4.9 ft |
| Thu, Oct 29, 4:23 AM | Low | 0.0 ft |
| Thu, Oct 29, 10:32 AM | High | 6.0 ft |
| Thu, Oct 29, 5:19 PM | Low | 0.0 ft |
| Thu, Oct 29, 11:16 PM | High | 4.7 ft |
| Fri, Oct 30, 5:14 AM | Low | 0.3 ft |
| Fri, Oct 30, 11:32 AM | High | 5.7 ft |
| Fri, Oct 30, 6:14 PM | Low | 0.2 ft |
| Sat, Oct 31, 12:21 AM | High | 4.6 ft |
| Sat, Oct 31, 6:11 AM | Low | 0.5 ft |
| Sat, Oct 31, 12:38 PM | High | 5.4 ft |
| Sat, Oct 31, 7:18 PM | Low | 0.4 ft |
| Sun, Nov 1, 1:26 AM | High | 4.5 ft |
| Sun, Nov 1, 6:20 AM | Low | 0.8 ft |
| Sun, Nov 1, 12:43 PM | High | 5.2 ft |
The constants that make it
| Constituent | Amplitude | Phase |
|---|---|---|
| M2 | 2.2 ft | 5.6° |
| N2 | 0.5 ft | 350.0° |
| S2 | 0.4 ft | 32.4° |
| K1 | 0.3 ft | 173.9° |
| SA | 0.3 ft | 142.3° |
| O1 | 0.2 ft | 172.1° |
| SSA | 0.1 ft | 71.6° |
| K2 | 0.1 ft | 32.5° |
The eight largest of 33. Source: NOAA CO-OPS harmonic constituents for 8531680, public domain.
The year as a print
The last two days, measured
At Sun, Oct 25 16:24 the gauge read 2.4 ft, 0.4 ft above the computed curve: wind and pressure, not the moon. The widest gap of the two days was 1.4 ft, at Sat, Oct 24 11:12.
- 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 | 4.55 ft | 3.99 ft | 3.97 ft |
| Sun, Oct 25 06:00 | 5.60 ft | 5.13 ft | 5.12 ft |
| Sun, Oct 25 07:00 | 6.18 ft | 5.75 ft | 5.75 ft |
| Sun, Oct 25 08:00 | 6.22 ft | 5.73 ft | 5.73 ft |
| Sun, Oct 25 09:00 | 5.53 ft | 5.01 ft | 5.02 ft |
| Sun, Oct 25 10:00 | 4.40 ft | 3.79 ft | 3.80 ft |
| Sun, Oct 25 11:00 | 3.08 ft | 2.44 ft | 2.45 ft |
| Sun, Oct 25 12:00 | 1.86 ft | 1.24 ft | 1.26 ft |
| Sun, Oct 25 13:00 | 0.88 ft | 0.36 ft | 0.38 ft |
| Sun, Oct 25 14:00 | 0.36 ft | -0.00 ft | 0.02 ft |
| Sun, Oct 25 15:00 | 0.70 ft | 0.38 ft | 0.40 ft |
| Sun, Oct 25 16:00 | 1.87 ft | 1.47 ft | 1.48 ft |
Measured heights from NOAA CO-OPS station 8531680, preliminary, above mean lower low water. The print carries the computed curve only: one year, no weather.