Tides Today & Tomorrow in Chiachi Island (East Side), AK

TIDE TIMES for Thursday, July 30, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 1h 45m at 10:08 am (-1.2 ft)
Next high tide : 4:21 pm (6.4 ft)
Sunset today : 10:47 pm
Sunrise tomorrow : 6:38 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Oct 1973

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon5:006.14:317.810:343.711:331.17:407:11Waxing Crescent1Mon
2Tue5:475.65:107.311:124.47:427:09First Quarter2Tue
3Wed6:455.16:006.712:231.811:57 AM5.17:447:06First Quarter3Wed
4Thu8:104.97:066.31:272.51:025.57:457:04First Quarter4Thu
5Fri9:465.08:326.02:512.72:395.57:477:01First Quarter5Fri
6Sat10:435.49:556.14:092.54:174.87:496:58Waxing Gibbous6Sat
7Sun11:195.910:586.45:012.15:173.87:516:56Waxing Gibbous7Sun
8Mon11:496.511:496.75:401.76:012.67:536:53Waxing Gibbous8Mon
9Tue12:187.26:151.46:411.47:556:51Waxing Gibbous9Tue
10Wed12:347.012:477.86:481.37:180.37:586:48Full Moon10Wed
11Thu1:167.31:188.47:211.37:56-0.68:006:46Full Moon11Thu
12Fri1:587.41:508.97:551.58:34-1.38:026:43Full Moon12Fri
13Sat2:407.42:259.28:301.89:15-1.68:046:41Waning Gibbous13Sat
14Sun3:237.23:029.39:072.39:58-1.68:066:38Waning Gibbous14Sun
15Mon4:096.83:439.29:472.810:46-1.28:086:36Waning Gibbous15Mon
16Tue5:016.44:308.810:323.511:39-0.58:106:33Waning Gibbous16Tue
17Wed6:016.05:268.211:264.18:126:31Third Quarter17Wed
18Thu7:135.86:337.512:410.312:344.68:146:28Third Quarter18Thu
19Fri8:365.87:576.91:530.92:044.68:166:26Third Quarter19Fri
20Sat9:496.39:296.73:121.23:463.98:186:23Waning Crescent20Sat
21Sun10:436.910:466.74:201.25:012.68:206:21Waning Crescent21Sun
22Mon11:287.511:496.95:151.35:581.48:226:19Waning Crescent22Mon
23Tue12:068.06:011.46:460.28:246:16Waning Crescent23Tue
24Wed12:427.012:428.46:411.67:27-0.68:266:14New Moon24Wed
25Thu1:297.11:158.77:181.98:05-1.08:286:12New Moon25Thu
26Fri2:117.11:478.87:532.38:40-1.18:316:09New Moon26Fri
27Sat2:507.02:188.88:272.89:15-1.08:336:07New Moon27Sat
28Sun2:286.81:508.67:593.38:50-0.67:355:05Waxing Crescent28Sun
29Mon3:066.52:228.38:333.89:260.07:375:02Waxing Crescent29Mon
30Tue3:456.22:587.99:084.310:050.67:395:00Waxing Crescent30Tue
31Wed4:285.83:377.49:474.710:491.37:414:58Waxing Crescent31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9459085)

Common Questions About Chiachi Island (East Side), AK Tides

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What time does the tide turn (slack tide) in Chiachi Island (East Side), AK today?

Slack tide in Chiachi Island (East Side), AK is approximately 1:14 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Chiachi Island (East Side), AK?

Chiachi Island (East Side), AK is currently in a spring phase. Tonight's moon is 99% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Chiachi Island (East Side), AK tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Chiachi Island (East Side), AK?

Tide predictions for Chiachi Island (East Side), AK come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Chiachi Island (East Side), AK?

Tide data for Chiachi Island (East Side), AK is sourced from NOAA Station #9459085. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9459085.

What is the moon phase in Chiachi Island (East Side), AK tonight?

Tonight the moon over Chiachi Island (East Side), AK is Full Moon (99% illuminated). This places Chiachi Island (East Side), AK in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA