NOAA station 9450142, Alaska
Kelp Island Passage, Duke Island tide chart
Saturday, October 31Alaska Daylight Time
Predicted from Ketchikan (NOAA’s page for this station, opens in a new tab)Rising, about 9.2 ft now
As of 3:12 AM AKDT
- Next
- High 12.5 ft at 5:21 AMin 2h 9m
- Then
- Low 5.1 ft at 10:52 AMin 7h 40m
- Next
High
5:21 AM
12.5 ft
Low
10:52 AM
5.1 ft
High
4:57 PM
14.2 ft
Low
11:58 PM
0.4 ft
The week ahead
This week’s tides at Kelp Island Passage, Duke 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 |
|---|---|---|---|---|
| Sat, Oct 31Range 13.8 ft | 5:21 AM 12.5 ft4:57 PM 14.2 ft | 10:52 AM 5.1 ft11:58 PM 0.4 ft | 13.8 ft | |
| Sun, Nov 1Range 7.3 ft | 5:33 AM 12.0 ft5:14 PM 13.0 ft | 11:12 AM 5.7 ft | 7.3 ft | |
| Mon, Nov 2Range 11.1 ft | 6:51 AM 12.1 ft6:44 PM 12.3 ft | 12:12 AM 1.2 ft12:49 PM 5.4 ft | 11.1 ft | |
| Tue, Nov 3Range 11.2 ft | 8:01 AM 12.8 ft8:08 PM 12.3 ft | 1:26 AM 1.6 ft2:15 PM 4.3 ft | 11.2 ft | |
| Wed, Nov 4Range 12.1 ft | 8:56 AM 13.8 ft9:17 PM 12.7 ft | 2:31 AM 1.7 ft3:19 PM 2.7 ft | 12.1 ft | |
| Thu, Nov 5Range 13.5 ft | 9:42 AM 14.7 ft10:13 PM 13.2 ft | 3:25 AM 1.7 ft4:10 PM 1.2 ft | 13.5 ft | |
| Fri, Nov 6Range 15.5 ft | 10:21 AM 15.4 ft11:01 PM 13.6 ft | 4:10 AM 1.8 ft4:53 PM -0.1 ft | 15.5 ft |
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Kelp Island Passage, Duke 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 |
|---|---|---|---|
| Sat, Oct 31Range 13.8 ft | 5:21 AM 12.5 ft4:57 PM 14.2 ft | 10:52 AM 5.1 ft11:58 PM 0.4 ft | 13.8 ft |
| Sun, Nov 1Range 7.3 ft | 5:33 AM 12.0 ft5:14 PM 13.0 ft | 11:12 AM 5.7 ft | 7.3 ft |
| Mon, Nov 2Range 11.1 ft | 6:51 AM 12.1 ft6:44 PM 12.3 ft | 12:12 AM 1.2 ft12:49 PM 5.4 ft | 11.1 ft |
| Tue, Nov 3Range 11.2 ft | 8:01 AM 12.8 ft8:08 PM 12.3 ft | 1:26 AM 1.6 ft2:15 PM 4.3 ft | 11.2 ft |
| Wed, Nov 4Range 12.1 ft | 8:56 AM 13.8 ft9:17 PM 12.7 ft | 2:31 AM 1.7 ft3:19 PM 2.7 ft | 12.1 ft |
| Thu, Nov 5Range 13.5 ft | 9:42 AM 14.7 ft10:13 PM 13.2 ft | 3:25 AM 1.7 ft4:10 PM 1.2 ft | 13.5 ft |
| Fri, Nov 6Range 15.5 ft | 10:21 AM 15.4 ft11:01 PM 13.6 ft | 4:10 AM 1.8 ft4:53 PM -0.1 ft | 15.5 ft |
| Sat, Nov 7Range 16.8 ft | 10:56 AM 15.9 ft11:44 PM 13.9 ft | 4:51 AM 2.1 ft5:31 PM -0.9 ft | 16.8 ft |
| Sun, Nov 8Range 17.4 ft | 11:29 AM 16.1 ft | 5:28 AM 2.4 ft6:07 PM -1.3 ft | 17.4 ft |
| Mon, Nov 9Range 17.5 ft | 12:24 AM 13.9 ft12:01 PM 16.1 ft | 6:03 AM 2.9 ft6:41 PM -1.4 ft | 17.5 ft |
| Tue, Nov 10Range 16.9 ft | 1:01 AM 13.8 ft12:33 PM 15.8 ft | 6:38 AM 3.4 ft7:15 PM -1.1 ft | 16.9 ft |
| Wed, Nov 11Range 16.0 ft | 1:38 AM 13.4 ft1:05 PM 15.4 ft | 7:12 AM 4.0 ft7:50 PM -0.6 ft | 16.0 ft |
| Thu, Nov 12Range 14.7 ft | 2:15 AM 13.0 ft1:39 PM 14.8 ft | 7:46 AM 4.6 ft8:26 PM 0.1 ft | 14.7 ft |
| Fri, Nov 13Range 13.2 ft | 2:53 AM 12.4 ft2:14 PM 14.1 ft | 8:22 AM 5.2 ft9:05 PM 0.9 ft | 13.2 ft |
Show days 15 to 30Hide days 15 to 30 | |||
| Sat, Nov 14Range 11.5 ft | 3:36 AM 11.7 ft2:54 PM 13.2 ft | 9:03 AM 5.8 ft9:48 PM 1.7 ft | 11.5 ft |
| Sun, Nov 15Range 9.8 ft | 4:26 AM 11.2 ft3:42 PM 12.3 ft | 9:54 AM 6.3 ft10:39 PM 2.5 ft | 9.8 ft |
| Mon, Nov 16Range 8.4 ft | 5:24 AM 11.0 ft4:42 PM 11.4 ft | 11:01 AM 6.6 ft11:37 PM 3.0 ft | 8.4 ft |
| Tue, Nov 17Range 4.9 ft | 6:27 AM 11.2 ft5:58 PM 10.8 ft | 12:24 PM 6.3 ft | 4.9 ft |
| Wed, Nov 18Range 8.5 ft | 7:25 AM 11.8 ft7:17 PM 10.8 ft | 12:40 AM 3.3 ft1:40 PM 5.3 ft | 8.5 ft |
| Thu, Nov 19Range 9.3 ft | 8:14 AM 12.7 ft8:28 PM 11.3 ft | 1:40 AM 3.4 ft2:41 PM 3.8 ft | 9.3 ft |
| Fri, Nov 20Range 11.7 ft | 8:56 AM 13.8 ft9:28 PM 12.0 ft | 2:34 AM 3.3 ft3:31 PM 2.1 ft | 11.7 ft |
| Sat, Nov 21Range 14.5 ft | 9:36 AM 14.9 ft10:21 PM 12.9 ft | 3:22 AM 3.1 ft4:16 PM 0.4 ft | 14.5 ft |
| Sun, Nov 22Range 17.2 ft | 10:16 AM 16.0 ft11:10 PM 13.7 ft | 4:08 AM 3.0 ft4:59 PM -1.2 ft | 17.2 ft |
| Mon, Nov 23Range 19.3 ft | 10:57 AM 16.9 ft11:58 PM 14.3 ft | 4:52 AM 2.9 ft5:42 PM -2.4 ft | 19.3 ft |
| Tue, Nov 24Range 20.8 ft | 11:40 AM 17.6 ft | 5:36 AM 2.8 ft6:26 PM -3.2 ft | 20.8 ft |
| Wed, Nov 25Range 21.3 ft | 12:45 AM 14.6 ft12:24 PM 17.8 ft | 6:21 AM 2.9 ft7:11 PM -3.5 ft | 21.3 ft |
| Thu, Nov 26Range 20.8 ft | 1:33 AM 14.7 ft1:11 PM 17.6 ft | 7:07 AM 3.1 ft7:58 PM -3.2 ft | 20.8 ft |
| Fri, Nov 27Range 19.5 ft | 2:22 AM 14.4 ft2:00 PM 17.0 ft | 7:57 AM 3.4 ft8:48 PM -2.5 ft | 19.5 ft |
| Sat, Nov 28Range 17.4 ft | 3:14 AM 14.1 ft2:53 PM 15.9 ft | 8:51 AM 3.9 ft9:41 PM -1.5 ft | 17.4 ft |
| Sun, Nov 29Range 14.8 ft | 4:09 AM 13.7 ft3:52 PM 14.5 ft | 9:52 AM 4.3 ft10:37 PM -0.3 ft | 14.8 ft |
Conditions at Kelp Island Passage, Duke Island
From the National Weather Service forecast for this spot, with today's sunrise and sunset.
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About Kelp Island Passage, Duke Island tides
Kelp Island Passage, Duke Island is a NOAA subordinate station (9450142): NOAA predicts its times and heights from Ketchikan (9450460) 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, Kelp Island Passage, Duke Island has two highs and two lows on 26 days and three turns on 4 days, and the daily range runs from 4.9 to 21.3 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 Kelp Island Passage, Duke Island today?+
Today (Saturday, October 31), high tide at Kelp Island Passage, Duke Island is at 5:21 AM (12.5 ft), 4:57 PM (14.2 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Kelp Island Passage, Duke Island today?+
Today, low tide at Kelp Island Passage, Duke Island is at 10:52 AM (5.1 ft), 11:58 PM (0.4 ft).
What tidal datum do these Kelp Island Passage, Duke 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?+
Kelp Island Passage, Duke Island is a NOAA subordinate station (9450142). NOAA predicts its times and heights from Ketchikan (9450460) 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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