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 | 2:11 AM | 16.42 ft |
| Low tide | 8:00 AM | 1.73 ft |
| High tide | 2:00 PM | 19.10 ft |
| Low tide | 8:44 PM | -2.85 ft |
| Day | High tides | Low tides |
|---|---|---|
| Today Tue, Oct 27 | 2:11 AM 16.4 ft2:00 PM 19.1 ft | 8:00 AM 1.7 ft8:44 PM -2.9 ft |
| Tomorrow Wed, Oct 28 | 2:56 AM 16.1 ft2:40 PM 18.9 ft | 8:40 AM 2.3 ft9:28 PM -2.5 ft |
| Thu, Oct 29 | 3:44 AM 15.4 ft3:24 PM 18.2 ft | 9:23 AM 3.1 ft10:17 PM -1.7 ft |
| Fri, Oct 30 | 4:36 AM 14.5 ft4:14 PM 17.0 ft | 10:13 AM 4.1 ft11:13 PM -0.7 ft |
| Sat, Oct 31 | 5:38 AM 13.7 ft5:14 PM 15.6 ft | 11:13 AM 5.0 ft |
| Sun, Nov 1 | 5:50 AM 13.2 ft5:31 PM 14.2 ft | 12:19 AM 0.4 ft11:33 AM 5.5 ft |
| Mon, Nov 2 | 7:08 AM 13.3 ft7:01 PM 13.5 ft | 12:33 AM 1.2 ft1:10 PM 5.3 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.
Blashke Island is a subordinate station: NOAA computes its tides from Ketchikan with fixed time and height corrections.
On Tuesday, October 27, high tide at Blashke Island is at 2:11 AM (16.4 ft) and 2:00 PM (19.1 ft); low tide is at 8:00 AM (1.7 ft) and 8:44 PM (-2.9 ft) (AKDT, heights above MLLW). The table above lists the next 7 days.
The highest predicted tide in the next 12 months is 19.6 ft on December 24, 2026 at 12:32 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 178 days in the next 12 months the low tide drops below 0 ft (MLLW). The lowest is -4.0 ft on July 5, 2027 at 8:48 AM. 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. Blashke Island is a subordinate station: NOAA derives its times and heights from the reference station Ketchikan with fixed corrections. The curve between highs and lows is our interpolation. This page is not for navigation.