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FL · NOAA 8729840 · 30° 24′ N · 87° 13′ W
Tides at Pensacola
A diurnal tide (form factor 11.23), spring this week. Predicted from the station's 30 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, 10:30 PM | High | 1.6 ft |
| Mon, Oct 26, 9:13 AM | Low | 0.2 ft |
| Mon, Oct 26, 11:08 PM | High | 1.8 ft |
| Tue, Oct 27, 10:23 AM | Low | 0.1 ft |
| Wed, Oct 28, 12:01 AM | High | 1.9 ft |
| Wed, Oct 28, 11:34 AM | Low | -0.0 ft |
| Thu, Oct 29, 1:02 AM | High | 1.9 ft |
| Thu, Oct 29, 12:47 PM | Low | -0.1 ft |
| Fri, Oct 30, 2:05 AM | High | 1.9 ft |
| Fri, Oct 30, 1:58 PM | Low | -0.1 ft |
| Sat, Oct 31, 3:05 AM | High | 1.9 ft |
| Sat, Oct 31, 3:01 PM | Low | -0.1 ft |
| Sun, Nov 1, 3:05 AM | High | 1.8 ft |
The constants that make it
| Constituent | Amplitude | Phase |
|---|---|---|
| K1 | 0.4 ft | 58.2° |
| O1 | 0.4 ft | 47.9° |
| SA | 0.4 ft | 150.4° |
| SSA | 0.2 ft | 49.1° |
| P1 | 0.1 ft | 63.8° |
| Q1 | 0.1 ft | 37.9° |
| M2 | 0.1 ft | 172.1° |
| OO1 | 0.0 ft | 34.8° |
The eight largest of 30. Source: NOAA CO-OPS harmonic constituents for 8729840, public domain.
The year as a print
The last two days, measured
At Sun, Oct 25 15:24 the gauge read 1.7 ft, 0.7 ft above the computed curve: wind and pressure, not the moon. The widest gap of the two days was 0.9 ft, at Fri, Oct 23 15:48.
- 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 04:00 | 1.49 ft | 0.72 ft | 0.74 ft |
| Sun, Oct 25 05:00 | 1.28 ft | 0.58 ft | 0.59 ft |
| Sun, Oct 25 06:00 | 1.15 ft | 0.47 ft | 0.48 ft |
| Sun, Oct 25 07:00 | 1.10 ft | 0.40 ft | 0.41 ft |
| Sun, Oct 25 08:00 | 1.08 ft | 0.38 ft | 0.39 ft |
| Sun, Oct 25 09:00 | 1.11 ft | 0.40 ft | 0.40 ft |
| Sun, Oct 25 10:00 | 1.16 ft | 0.46 ft | 0.46 ft |
| Sun, Oct 25 11:00 | 1.20 ft | 0.55 ft | 0.54 ft |
| Sun, Oct 25 12:00 | 1.32 ft | 0.66 ft | 0.64 ft |
| Sun, Oct 25 13:00 | 1.44 ft | 0.75 ft | 0.74 ft |
| Sun, Oct 25 14:00 | 1.52 ft | 0.85 ft | 0.83 ft |
| Sun, Oct 25 15:00 | 1.62 ft | 0.95 ft | 0.94 ft |
Measured heights from NOAA CO-OPS station 8729840, preliminary, above mean lower low water. The print carries the computed curve only: one year, no weather.