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CA · NOAA 9413450 · 36° 37′ N · 121° 53′ W
Tides at Monterey
A mixed, mainly semidiurnal tide (form factor 0.96), spring this week. Predicted from the station's 31 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, 4:50 PM | Low | -0.2 ft |
| Sun, Oct 25, 11:12 PM | High | 4.3 ft |
| Mon, Oct 26, 4:20 AM | Low | 2.0 ft |
| Mon, Oct 26, 10:27 AM | High | 6.2 ft |
| Mon, Oct 26, 5:36 PM | Low | -0.6 ft |
| Tue, Oct 27, 12:09 AM | High | 4.2 ft |
| Tue, Oct 27, 4:55 AM | Low | 2.4 ft |
| Tue, Oct 27, 11:02 AM | High | 6.4 ft |
| Tue, Oct 27, 6:25 PM | Low | -0.8 ft |
| Wed, Oct 28, 1:10 AM | High | 4.1 ft |
| Wed, Oct 28, 5:34 AM | Low | 2.7 ft |
| Wed, Oct 28, 11:42 AM | High | 6.4 ft |
| Wed, Oct 28, 7:18 PM | Low | -0.9 ft |
| Thu, Oct 29, 2:20 AM | High | 3.9 ft |
| Thu, Oct 29, 6:18 AM | Low | 3.0 ft |
| Thu, Oct 29, 12:29 PM | High | 6.2 ft |
| Thu, Oct 29, 8:16 PM | Low | -0.8 ft |
| Fri, Oct 30, 3:37 AM | High | 3.9 ft |
| Fri, Oct 30, 7:15 AM | Low | 3.3 ft |
| Fri, Oct 30, 1:24 PM | High | 5.9 ft |
| Fri, Oct 30, 9:19 PM | Low | -0.7 ft |
| Sat, Oct 31, 4:53 AM | High | 4.0 ft |
| Sat, Oct 31, 8:35 AM | Low | 3.4 ft |
| Sat, Oct 31, 2:31 PM | High | 5.5 ft |
| Sat, Oct 31, 10:25 PM | Low | -0.4 ft |
| Sun, Nov 1, 4:56 AM | High | 4.2 ft |
| Sun, Nov 1, 9:18 AM | Low | 3.3 ft |
The constants that make it
| Constituent | Amplitude | Phase |
|---|---|---|
| M2 | 1.6 ft | 181.3° |
| K1 | 1.2 ft | 219.6° |
| O1 | 0.8 ft | 203.5° |
| S2 | 0.4 ft | 180.1° |
| P1 | 0.4 ft | 215.8° |
| N2 | 0.4 ft | 155.0° |
| SA | 0.2 ft | 198.5° |
| Q1 | 0.1 ft | 194.8° |
The eight largest of 31. Source: NOAA CO-OPS harmonic constituents for 9413450, public domain.
The year as a print
The last two days, measured
At Sun, Oct 25 13:24 the gauge read 4.1 ft, 1.3 ft above the computed curve: wind and pressure, not the moon. The widest gap of the two days was 1.4 ft, at Sun, Oct 25 12:00.
- 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 02:00 | 3.53 ft | 2.31 ft | 2.29 ft |
| Sun, Oct 25 03:00 | 3.02 ft | 1.77 ft | 1.76 ft |
| Sun, Oct 25 04:00 | 2.84 ft | 1.64 ft | 1.64 ft |
| Sun, Oct 25 05:00 | 3.15 ft | 1.99 ft | 2.01 ft |
| Sun, Oct 25 06:00 | 3.99 ft | 2.77 ft | 2.80 ft |
| Sun, Oct 25 07:00 | 5.02 ft | 3.81 ft | 3.85 ft |
| Sun, Oct 25 08:00 | 6.07 ft | 4.85 ft | 4.89 ft |
| Sun, Oct 25 09:00 | 6.82 ft | 5.61 ft | 5.65 ft |
| Sun, Oct 25 10:00 | 7.07 ft | 5.86 ft | 5.91 ft |
| Sun, Oct 25 11:00 | 6.85 ft | 5.53 ft | 5.57 ft |
| Sun, Oct 25 12:00 | 6.01 ft | 4.64 ft | 4.68 ft |
| Sun, Oct 25 13:00 | 4.64 ft | 3.38 ft | 3.41 ft |
Measured heights from NOAA CO-OPS station 9413450, preliminary, above mean lower low water. The print carries the computed curve only: one year, no weather.