High tide occurs approximately 11:50 after the Moon passes over the local meridian of Eureka.
Tidal predictions and solunar activity are mathematically estimated for recreational and tide watch calibration purposes only. This constant-based method is designed for semidiurnal tidal regimes (two high tides a day). Regions with diurnal or mixed tides will experience significant deviations. During lunar quarters (First and Third Quarter), natural variations may shift times by 1.5 to 2 hours compared to official tables.Strictly not for maritime navigation or safety-critical planning.
7-Day Tide & Activity Forecast
| Date | Moon Phase | Activity | High Tides (Estimated) |
|---|---|---|---|
| Today | Waning gibbous |
|
05:30 & 18:00 |
| Sun, Nov 1 | Last quarter |
|
05:29 & 17:57 |
| Mon, Nov 2 | Last quarter |
|
06:24 & 18:49 |
| Tue, Nov 3 | Waning crescent |
|
07:14 & 19:37 |
| Wed, Nov 4 | Waning crescent |
|
08:00 & 20:23 |
| Thu, Nov 5 | Waning crescent |
|
08:45 & 21:07 |
| Fri, Nov 6 | Waning crescent |
|
09:29 & 21:51 |
Today's Solunar Activity & Feeding Curve
24-hour continuous biological activity score with estimated high tide alignments.
Official Port Data
This port relies on official hydrographic data and does not require community calibration.