Grindall Island, south of — AK, United States

Tidal currents & slack water

↑0.3 kn↑0.2 kn↑0.3 kn08:1613:0121:21Now
Tidal current at Grindall Island, south of, computed from harmonic constituents. Maximum flood of 0.3 knots on Mon 19 Oct 2026 at 16:50.
↑7:27am↓5:38pm

Predictions are not observations — conditions vary with weather and river flow. Not for navigation.

Slackwater predicts tides and currents offline, on your phone — tides worldwide, currents across the US and Canada.

Download on the App StoreSlackwater

Requires iOS 26 or later.

Slack water and maximums for the next 7 days

Mon 19 Oct 2026 through Sun 25 Oct 2026. All times are local to Grindall Island, south of (America/Sitka). What slack water is, and why it isn’t high or low tide.
DayCurrentTimeSpeed
Mon 19 Oct 2026Max flood0.3 kn
Mon 19 Oct 2026Slack
Mon 19 Oct 2026Max ebb0.2 kn
Mon 19 Oct 2026Slack
Mon 19 Oct 2026Max flood0.3 kn
Mon 19 Oct 2026Slack
Mon 19 Oct 2026Max ebb0.1 kn
Tue 20 Oct 2026Slack
Tue 20 Oct 2026Max flood0.3 kn
Tue 20 Oct 2026Slack
Tue 20 Oct 2026Max ebb0.2 kn
Tue 20 Oct 2026Slack
Tue 20 Oct 2026Max flood0.3 kn
Tue 20 Oct 2026Slack
Wed 21 Oct 2026Max ebb0.1 kn
Wed 21 Oct 2026Slack
Wed 21 Oct 2026Max flood0.3 kn
Wed 21 Oct 2026Slack
Wed 21 Oct 2026Max ebb0.2 kn
Wed 21 Oct 2026Slack
Wed 21 Oct 2026Max flood0.3 kn
Wed 21 Oct 2026Slack
Thu 22 Oct 2026Max ebb0.2 kn
Thu 22 Oct 2026Slack
Thu 22 Oct 2026Max flood0.4 kn
Thu 22 Oct 2026Slack
Thu 22 Oct 2026Max ebb0.2 kn
Thu 22 Oct 2026Slack
Thu 22 Oct 2026Max flood0.3 kn
Fri 23 Oct 2026Slack
Fri 23 Oct 2026Max ebb0.2 kn
Fri 23 Oct 2026Slack
Fri 23 Oct 2026Max flood0.4 kn
Fri 23 Oct 2026Slack
Fri 23 Oct 2026Max ebb0.3 kn
Fri 23 Oct 2026Slack
Fri 23 Oct 2026Max flood0.3 kn
Sat 24 Oct 2026Slack
Sat 24 Oct 2026Max ebb0.2 kn
Sat 24 Oct 2026Slack
Sat 24 Oct 2026Max flood0.4 kn
Sat 24 Oct 2026Slack
Sat 24 Oct 2026Max ebb0.3 kn
Sat 24 Oct 2026Slack
Sat 24 Oct 2026Max flood0.3 kn
Sun 25 Oct 2026Slack
Sun 25 Oct 2026Max ebb0.3 kn
Sun 25 Oct 2026Slack
Sun 25 Oct 2026Max flood0.4 kn
Sun 25 Oct 2026Slack
Sun 25 Oct 2026Max ebb0.4 kn
Sun 25 Oct 2026Slack
Sun 25 Oct 2026Max flood0.4 kn

Station facts

Position
55.4110° N, 132.1264° W
Time zone
America/Sitka
Source
NOAA harmonic constituents
Region
AK, United States

How we check predictions — dated samples and their limits.

Nearby

All current stations