NOAA station 9452682, Alaska
Composite Island tide chart
Friday, October 30Alaska Daylight Time
Predicted from Elfin Cove, Port Althorp (NOAA’s page for this station, opens in a new tab)Falling, about 1.8 ft now
As of 10:15 PM AKDT
- Next
- Low -0.8 ft at 11:58 PMin 1h 43m
- Then
- High 13.9 ft at 6:32 AMtomorrow, in 8h 17m
High, passed
5:29 AM
14.6 ft
Low, passed
10:50 AM
5.0 ft
High, passed
4:49 PM
18.7 ft
- Next
Low
11:58 PM
-0.8 ft
The week ahead
This week’s tides at Composite Island
Every high and low for the next seven days, in feet above MLLW. The 30-day table below has the rest of the month.
| Day | Tide curve | Highs | Lows | Range |
|---|---|---|---|---|
| Fri, Oct 30Range 19.5 ft | 5:29 AM 14.6 ft4:49 PM 18.7 ft | 10:50 AM 5.0 ft11:58 PM -0.8 ft | 19.5 ft | |
| Sat, Oct 31Range 11.4 ft | 6:32 AM 13.9 ft5:48 PM 17.1 ft | 11:52 AM 5.7 ft | 11.4 ft | |
| Sun, Nov 1Range 15.4 ft | 6:45 AM 13.5 ft6:03 PM 15.5 ft | 1:02 AM 0.1 ft12:15 PM 5.9 ft | 15.4 ft | |
| Mon, Nov 2Range 13.5 ft | 8:00 AM 13.9 ft7:32 PM 14.4 ft | 1:13 AM 0.9 ft1:52 PM 5.5 ft | 13.5 ft | |
| Tue, Nov 3Range 13.3 ft | 9:05 AM 14.7 ft8:58 PM 14.0 ft | 2:26 AM 1.4 ft3:17 PM 4.3 ft | 13.3 ft | |
| Wed, Nov 4Range 14.1 ft | 9:57 AM 15.8 ft10:12 PM 14.2 ft | 3:29 AM 1.7 ft4:23 PM 2.7 ft | 14.1 ft | |
| Thu, Nov 5Range 15.7 ft | 10:40 AM 16.9 ft11:12 PM 14.6 ft | 4:23 AM 2.0 ft5:14 PM 1.2 ft | 15.7 ft |
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Composite Island tide table for the next 30 days
Every high and low for the next month, with the daily tidal range.
| Day | Highs | Lows | Range |
|---|---|---|---|
| Fri, Oct 30Range 19.5 ft | 5:29 AM 14.6 ft4:49 PM 18.7 ft | 10:50 AM 5.0 ft11:58 PM -0.8 ft | 19.5 ft |
| Sat, Oct 31Range 11.4 ft | 6:32 AM 13.9 ft5:48 PM 17.1 ft | 11:52 AM 5.7 ft | 11.4 ft |
| Sun, Nov 1Range 15.4 ft | 6:45 AM 13.5 ft6:03 PM 15.5 ft | 1:02 AM 0.1 ft12:15 PM 5.9 ft | 15.4 ft |
| Mon, Nov 2Range 13.5 ft | 8:00 AM 13.9 ft7:32 PM 14.4 ft | 1:13 AM 0.9 ft1:52 PM 5.5 ft | 13.5 ft |
| Tue, Nov 3Range 13.3 ft | 9:05 AM 14.7 ft8:58 PM 14.0 ft | 2:26 AM 1.4 ft3:17 PM 4.3 ft | 13.3 ft |
| Wed, Nov 4Range 14.1 ft | 9:57 AM 15.8 ft10:12 PM 14.2 ft | 3:29 AM 1.7 ft4:23 PM 2.7 ft | 14.1 ft |
| Thu, Nov 5Range 15.7 ft | 10:40 AM 16.9 ft11:12 PM 14.6 ft | 4:23 AM 2.0 ft5:14 PM 1.2 ft | 15.7 ft |
| Fri, Nov 6Range 17.8 ft | 11:17 AM 17.8 ft | 5:08 AM 2.3 ft5:57 PM 0.0 ft | 17.8 ft |
| Sat, Nov 7Range 19.3 ft | 12:03 AM 15.0 ft11:52 AM 18.5 ft | 5:49 AM 2.7 ft6:36 PM -0.8 ft | 19.3 ft |
| Sun, Nov 8Range 20.1 ft | 12:48 AM 15.3 ft12:24 PM 18.8 ft | 6:26 AM 3.3 ft7:12 PM -1.3 ft | 20.1 ft |
| Mon, Nov 9Range 20.2 ft | 1:28 AM 15.4 ft12:56 PM 18.9 ft | 7:01 AM 3.8 ft7:46 PM -1.3 ft | 20.2 ft |
| Tue, Nov 10Range 19.8 ft | 2:07 AM 15.4 ft1:28 PM 18.7 ft | 7:35 AM 4.3 ft8:21 PM -1.1 ft | 19.8 ft |
| Wed, Nov 11Range 19.0 ft | 2:44 AM 15.1 ft2:00 PM 18.3 ft | 8:10 AM 4.9 ft8:56 PM -0.7 ft | 19.0 ft |
| Thu, Nov 12Range 17.7 ft | 3:22 AM 14.6 ft2:33 PM 17.6 ft | 8:44 AM 5.4 ft9:33 PM -0.1 ft | 17.7 ft |
Show days 15 to 30Hide days 15 to 30 | |||
| Fri, Nov 13Range 16.2 ft | 4:03 AM 14.0 ft3:07 PM 16.8 ft | 9:21 AM 5.8 ft10:13 PM 0.6 ft | 16.2 ft |
| Sat, Nov 14Range 14.6 ft | 4:48 AM 13.3 ft3:46 PM 15.8 ft | 10:02 AM 6.2 ft10:57 PM 1.2 ft | 14.6 ft |
| Sun, Nov 15Range 12.7 ft | 5:39 AM 12.8 ft4:32 PM 14.6 ft | 10:54 AM 6.5 ft11:46 PM 1.9 ft | 12.7 ft |
| Mon, Nov 16Range 6.8 ft | 6:38 AM 12.7 ft5:31 PM 13.4 ft | 12:04 PM 6.6 ft | 6.8 ft |
| Tue, Nov 17Range 10.5 ft | 7:37 AM 12.9 ft6:48 PM 12.4 ft | 12:41 AM 2.4 ft1:28 PM 6.2 ft | 10.5 ft |
| Wed, Nov 18Range 10.9 ft | 8:29 AM 13.7 ft8:13 PM 12.1 ft | 1:41 AM 2.8 ft2:45 PM 5.2 ft | 10.9 ft |
| Thu, Nov 19Range 11.6 ft | 9:14 AM 14.7 ft9:29 PM 12.4 ft | 2:38 AM 3.1 ft3:46 PM 3.7 ft | 11.6 ft |
| Fri, Nov 20Range 13.9 ft | 9:53 AM 16.0 ft10:33 PM 13.1 ft | 3:30 AM 3.3 ft4:35 PM 2.1 ft | 13.9 ft |
| Sat, Nov 21Range 16.9 ft | 10:31 AM 17.4 ft11:28 PM 14.1 ft | 4:18 AM 3.5 ft5:19 PM 0.5 ft | 16.9 ft |
| Sun, Nov 22Range 19.8 ft | 11:10 AM 18.8 ft | 5:03 AM 3.6 ft6:02 PM -1.0 ft | 19.8 ft |
| Mon, Nov 23Range 22.3 ft | 12:18 AM 15.0 ft11:50 AM 20.1 ft | 5:48 AM 3.8 ft6:45 PM -2.2 ft | 22.3 ft |
| Tue, Nov 24Range 23.8 ft | 1:06 AM 15.7 ft12:32 PM 20.9 ft | 6:32 AM 4.0 ft7:29 PM -2.9 ft | 23.8 ft |
| Wed, Nov 25Range 24.6 ft | 1:53 AM 16.1 ft1:15 PM 21.4 ft | 7:17 AM 4.2 ft8:15 PM -3.2 ft | 24.6 ft |
| Thu, Nov 26Range 24.2 ft | 2:40 AM 16.2 ft2:02 PM 21.2 ft | 8:05 AM 4.4 ft9:03 PM -3.0 ft | 24.2 ft |
| Fri, Nov 27Range 22.8 ft | 3:30 AM 16.0 ft2:50 PM 20.4 ft | 8:55 AM 4.6 ft9:53 PM -2.4 ft | 22.8 ft |
| Sat, Nov 28Range 20.4 ft | 4:22 AM 15.7 ft3:43 PM 19.0 ft | 9:51 AM 4.8 ft10:45 PM -1.4 ft | 20.4 ft |
Conditions at Composite Island
From the National Weather Service forecast for this spot, with today's sunrise and sunset.
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About Composite Island tides
Composite Island is a NOAA subordinate station (9452682): NOAA predicts its times and heights from Elfin Cove, Port Althorp (9452634) with offsets for this spot, so treat them as a close guide rather than an exact prediction. Heights are in feet above MLLW (Mean Lower Low Water), the datum of US nautical charts, so they line up with charted depths.
In the next 30 days, Composite Island has two highs and two lows on 26 days and three turns on 4 days, and the daily range runs from 6.8 to 24.6 ft. That is a mixed tide: two highs and two lows on most days, of clearly different heights.
Use the curve above to time a harbor entrance, a beach walk, fishing a moving tide or clearing a shallow bar, and remember that wind, air pressure and river flow can push the real water level above or below the prediction. The daily tidal range in the tables shows how much water moves each day: bigger ranges around the new and full moon mean stronger currents.
Frequently asked
What time is high tide in Composite Island today?+
Today (Friday, October 30), high tide at Composite Island is at 5:29 AM (14.6 ft), 4:49 PM (18.7 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Composite Island today?+
Today, low tide at Composite Island is at 10:50 AM (5.0 ft), 11:58 PM (-0.8 ft).
What tidal datum do these Composite Island tide heights use?+
All heights are given in feet relative to MLLW (Mean Lower Low Water), the standard NOAA chart datum for US tidal waters. A tide of 0.0 ft equals the chart datum; negative tides fall below it.
How accurate are these tide predictions?+
Composite Island is a NOAA subordinate station (9452682). NOAA predicts its times and heights from Elfin Cove, Port Althorp (9452634) with offsets for this spot, so treat them as a close guide rather than an exact prediction. Real water levels can also differ with wind, air pressure and river flow.
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