Heights in feet above Mean Lower Low Water (MLLW). Dots are NOAA's predicted highs and lows; the line between them is our interpolation. Shaded: night.
| Tide | Time | Height |
|---|---|---|
| High tide | 2:51 AM | 7.31 ft |
| Low tide | 10:12 AM | -0.60 ft |
| High tide | 5:39 PM | 8.78 ft |
| Low tide | 11:13 PM | 4.87 ft |
| Day | High tides | Low tides |
|---|---|---|
| Today Tue, Oct 27 | 2:51 AM 7.3 ft5:39 PM 8.8 ft | 10:12 AM -0.6 ft11:13 PM 4.9 ft |
| Tomorrow Wed, Oct 28 | 3:39 AM 7.3 ft6:33 PM 9.3 ft | 11:02 AM -1.1 ft |
| Thu, Oct 29 | 4:37 AM 7.4 ft7:27 PM 9.7 ft | 12:12 AM 4.9 ft11:56 AM -1.5 ft |
| Fri, Oct 30 | 5:41 AM 7.4 ft8:21 PM 9.8 ft | 1:11 AM 4.7 ft12:54 PM -1.6 ft |
| Sat, Oct 31 | 6:51 AM 7.3 ft9:12 PM 9.9 ft | 2:10 AM 4.4 ft1:53 PM -1.5 ft |
| Sun, Nov 1 | 7:06 AM 7.3 ft9:03 PM 9.8 ft | 2:08 AM 3.9 ft1:53 PM -1.2 ft |
| Mon, Nov 2 | 8:21 AM 7.2 ft9:52 PM 9.6 ft | 3:06 AM 3.3 ft2:52 PM -0.6 ft |
Orange: measured by NOAA's sensor, last 24 hours (6-minute data, preliminary). Dashed: predicted tide, through the next 24 hours. The prediction contains only the astronomical tide; wind, air pressure and river flow move the real water level away from it.
Black Rock, Walrus Islands is a subordinate station: NOAA computes its tides from Port Moller with fixed time and height corrections.
On Tuesday, October 27, high tide at Black Rock, Walrus Islands is at 2:51 AM (7.3 ft) and 5:39 PM (8.8 ft); low tide is at 10:12 AM (-0.6 ft) and 11:13 PM (4.9 ft) (AKDT, heights above MLLW). The table above lists the next 7 days.
The highest predicted tide in the next 12 months is 10.2 ft on November 28, 2026 at 6:58 PM. The largest tides fall a day or two after a full or new moon, especially when the Moon is closest to Earth.
Yes — on 192 days in the next 12 months the low tide drops below 0 ft (MLLW). The lowest is -2.4 ft on July 4, 2027 at 9:52 PM. Minus tides expose the most shoreline, which is why tide-poolers look for them.
Station local time (AKDT at the time this page was built), with daylight saving time applied where the area observes it — the same convention as NOAA's own tide tables.
From NOAA CO-OPS, the U.S. government tide station network (tidesandcurrents.noaa.gov); the predictions are public domain. Black Rock, Walrus Islands is a subordinate station: NOAA derives its times and heights from the reference station Port Moller with fixed corrections. The curve between highs and lows is our interpolation. This page is not for navigation.