Tides Today & Tomorrow in Symonds Bay, Biorka Island, AK

TIDE TIMES for Friday, August 14, 2026
The tide is currently falling in Symonds Bay, Biorka Island, AK.
Next low tide : in 5h 00m at 8:41 pm (0.7 ft)
Next high tide (tomorrow) : 2:42 am (10.2 ft)
Sunset today : 8:44 pm
Sunrise tomorrow : 5:28 am
Moon phase : Waxing Crescent (6% illuminated)
Tide Station Location : Station #9451468
Common Questions About Tides

Symonds Bay, Biorka Island, AK Tides - May 1940

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:156.98:078.11:303.21:331.93:136:44Waning Crescent1Wed
2Thu8:217.18:478.52:252.52:221.93:116:46Waning Crescent2Thu
3Fri9:137.49:218.93:091.73:041.93:086:48Waning Crescent3Fri
4Sat9:577.89:539.33:460.93:412.03:066:51Waning Crescent4Sat
5Sun10:378.110:239.74:210.24:162.03:046:53New Moon5Sun
6Mon11:148.310:5410.04:55-0.44:492.13:026:55New Moon6Mon
7Tue11:518.511:2510.15:28-0.85:232.32:596:57New Moon7Tue
8Wed12:288.56:03-1.15:582.52:576:59New Moon8Wed
9Thu1:068.56:39-1.26:332.72:557:01Waxing Crescent9Thu
10Fri12:3110.11:488.37:17-1.27:123.02:537:03Waxing Crescent10Fri
11Sat1:099.82:338.17:58-1.07:573.22:517:05Waxing Crescent11Sat
12Sun1:539.43:257.98:43-0.68:513.42:497:07Waxing Crescent12Sun
13Mon2:458.84:227.99:35-0.29:583.52:477:09First Quarter13Mon
14Tue3:508.25:238.110:340.311:193.12:457:11First Quarter14Tue
15Wed5:087.76:248.611:390.72:437:13First Quarter15Wed
16Thu6:327.57:219.212:402.312:450.92:417:15Waxing Gibbous16Thu
17Fri7:507.78:139.91:491.21:471.12:397:17Waxing Gibbous17Fri
18Sat8:588.29:0110.52:470.02:421.22:377:19Waxing Gibbous18Sat
19Sun9:578.69:4711.13:39-1.13:341.32:357:20Full Moon19Sun
20Mon10:509.010:3111.44:27-1.94:231.52:347:22Full Moon20Mon
21Tue11:399.311:1411.45:13-2.45:101.72:327:24Full Moon21Tue
22Wed12:269.35:57-2.65:562.02:307:26Full Moon22Wed
23Thu1:139.16:41-2.46:422.32:297:28Waning Gibbous23Thu
24Fri12:3910.61:598.87:24-1.97:292.72:277:29Waning Gibbous24Fri
25Sat1:239.82:478.58:08-1.28:183.02:267:31Waning Gibbous25Sat
26Sun2:089.03:368.28:52-0.59:123.32:247:33Waning Gibbous26Sun
27Mon2:588.14:287.99:390.410:153.52:237:34Third Quarter27Mon
28Tue3:567.25:227.810:301.111:283.42:217:36Third Quarter28Tue
29Wed5:056.66:157.911:261.82:207:38Third Quarter29Wed
30Thu6:236.27:058.112:422.912:242.22:197:39Third Quarter30Thu
31Fri7:376.37:498.51:432.21:202.52:187:41Waning Crescent31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9451468)

Common Questions About Symonds Bay, Biorka Island, AK Tides

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What time does the tide turn (slack tide) in Symonds Bay, Biorka Island, AK today?

Slack tide in Symonds Bay, Biorka Island, AK is approximately 11:41 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 Symonds Bay, Biorka Island, AK?

Symonds Bay, Biorka Island, AK is currently in a spring phase. Tonight's moon is 6% 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 Symonds Bay, Biorka Island, 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 Symonds Bay, Biorka Island, AK?

Tide predictions for Symonds Bay, Biorka Island, 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 Symonds Bay, Biorka Island, AK?

Tide data for Symonds Bay, Biorka Island, AK is sourced from NOAA Station #9451468. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9451468.

What is the moon phase in Symonds Bay, Biorka Island, AK tonight?

Tonight the moon over Symonds Bay, Biorka Island, AK is Waxing Crescent (6% illuminated). This places Symonds Bay, Biorka Island, 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