tidealmanac
Wed, Oct 21

Thursday, October 22, 2026

Block Island, Tlevak Narrows, AK · NOAA 9450406 · MLLW · Local time (America/Sitka)

Fri, Oct 23

This is a subordinate station: NOAA predicts its highs and lows from a nearby reference station and publishes no curve for it. Nothing is interpolated.

Tides

  1. Low4:41 AM1.7 ft0.51 m
  2. High11:13 AM10.9 ft3.32 m
  3. Low5:18 PM2.2 ft0.68 m
  4. High11:21 PM10.2 ft3.12 m

Range 9.2 ft2.81 m · 4 predicted tides · MLLW

Sun

Civil dawn
6:58 AM
Sunrise
7:36 AM
Solar noon
12:37 PM
Sunset
5:38 PM
Civil dusk
6:16 PM
Daylight
10h 2m

Computed from the station's coordinates (NOAA solar algorithm, ±1 min); not NOAA tide data. Sun calendars: sunupsundown.site.

Moon

Waxing gibbous87% illuminated · day 11 of the cycle

Between spring and neap: an average tidal range. Approximate phase, computed here.

This week

Mon, Oct 19L 1:55AM 2.2 ft0.68 mH 9:17AM 8.6 ft2.63 mL 2:30PM 5.4 ft1.64 mH 8:01PM 8.9 ft2.72 mTue, Oct 20L 3:06AM 2.1 ft0.65 mH 10:07AM 9.2 ft2.82 mL 3:47PM 4.5 ft1.38 mH 9:24PM 9.1 ft2.78 mWed, Oct 21L 3:59AM 1.9 ft0.57 mH 10:43AM 10.0 ft3.05 mL 4:37PM 3.4 ft1.05 mH 10:29PM 9.6 ft2.93 mThu, Oct 22L 4:41AM 1.7 ft0.51 mH 11:13AM 10.9 ft3.32 mL 5:18PM 2.2 ft0.68 mH 11:21PM 10.2 ft3.12 mFri, Oct 23L 5:19AM 1.6 ft0.48 mH 11:41AM 11.8 ft3.60 mL 5:55PM 1.0 ft0.31 mSat, Oct 24H 12:08AM 10.8 ft3.30 mL 5:55AM 1.7 ft0.50 mH 12:11PM 12.7 ft3.88 mL 6:33PM -0.1 ft-0.04 mSun, Oct 25H 12:52AM 11.3 ft3.46 mL 6:30AM 1.9 ft0.57 mH 12:42PM 13.6 ft4.13 mL 7:11PM -1.1 ft-0.32 m