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 2h 28m 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 - Nov 1973

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:185.54:236.810:345.111:391.87:434:56First Quarter1Thu
2Fri6:185.45:206.211:365.47:454:54First Quarter2Fri
3Sat7:265.56:335.812:362.312:585.37:474:52First Quarter3Sat
4Sun8:255.87:595.61:402.52:304.67:504:50First Quarter4Sun
5Mon9:106.49:155.72:402.63:383.57:524:47Waxing Gibbous5Mon
6Tue9:487.010:186.03:312.64:292.27:544:45Waxing Gibbous6Tue
7Wed10:247.711:116.44:162.55:130.97:564:43Waxing Gibbous7Wed
8Thu11:018.44:592.65:55-0.47:584:41Waxing Gibbous8Thu
9Fri12:006.711:39 AM9.05:412.66:37-1.48:004:40Full Moon9Fri
10Sat12:477.012:189.56:232.77:19-2.08:024:38Full Moon10Sat
11Sun1:327.112:599.87:052.88:03-2.48:044:36Full Moon11Sun
12Mon2:197.11:439.87:493.08:48-2.38:064:34Waning Gibbous12Mon
13Tue3:077.02:299.58:353.29:36-1.98:084:32Waning Gibbous13Tue
14Wed3:596.83:209.09:263.610:28-1.28:104:30Waning Gibbous14Wed
15Thu4:556.64:178.110:253.911:22-0.38:134:29Third Quarter15Thu
16Fri5:556.55:227.311:354.18:154:27Third Quarter16Fri
17Sat7:006.76:406.412:220.61:023.98:174:25Third Quarter17Sat
18Sun8:046.98:106.01:261.42:353.18:194:24Third Quarter18Sun
19Mon9:007.49:335.92:312.03:492.08:214:22Waning Crescent19Mon
20Tue9:477.810:426.03:302.54:461.08:234:21Waning Crescent20Tue
21Wed10:308.211:386.24:212.95:340.18:244:19Waning Crescent21Wed
22Thu11:088.55:073.26:16-0.58:264:18New Moon22Thu
23Fri12:266.411:45 AM8.75:493.56:53-0.88:284:17New Moon23Fri
24Sat1:076.612:198.86:273.77:28-0.98:304:15New Moon24Sat
25Sun1:456.612:538.87:043.98:01-0.98:324:14New Moon25Sun
26Mon2:206.61:278.67:394.08:34-0.78:344:13Waxing Crescent26Mon
27Tue2:556.52:018.48:144.29:08-0.48:364:12Waxing Crescent27Tue
28Wed3:316.32:368.08:514.39:430.08:374:11Waxing Crescent28Wed
29Thu4:086.23:147.59:314.510:200.58:394:10Waxing Crescent29Thu
30Fri4:476.13:557.010:164.610:581.08:414:09Waxing Crescent30Fri
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