NOAA station 9450406, Alaska
Block Island, Tlevak Narrows tide chart
Saturday, October 31Alaska Daylight Time
Predicted from Sitka (NOAA’s page for this station, opens in a new tab)Rising, about 7.4 ft now
As of 3:42 AM AKDT
- Next
- High 10.0 ft at 5:59 AMin 2h 17m
- Then
- Low 4.7 ft at 11:01 AMin 7h 19m
- Next
High
5:59 AM
10.0 ft
Low
11:01 AM
4.7 ft
High
5:03 PM
12.0 ft
The week ahead
This week’s tides at Block Island, Tlevak Narrows
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 7.3 ft | 5:59 AM 10.0 ft5:03 PM 12.0 ft | 11:01 AM 4.7 ft | 7.3 ft | |
| Sun, Nov 1Range 10.8 ft | 6:13 AM 9.9 ft5:19 PM 10.9 ft | 12:09 AM 0.1 ft11:24 AM 4.9 ft | 10.8 ft | |
| Mon, Nov 2Range 9.4 ft | 7:26 AM 10.1 ft6:50 PM 10.1 ft | 12:21 AM 0.7 ft1:04 PM 4.5 ft | 9.4 ft | |
| Tue, Nov 3Range 9.6 ft | 8:28 AM 10.7 ft8:18 PM 9.8 ft | 1:33 AM 1.1 ft2:30 PM 3.5 ft | 9.6 ft | |
| Wed, Nov 4Range 10.0 ft | 9:18 AM 11.4 ft9:33 PM 10.0 ft | 2:36 AM 1.4 ft3:33 PM 2.3 ft | 10.0 ft | |
| Thu, Nov 5Range 11.0 ft | 9:59 AM 12.1 ft10:34 PM 10.3 ft | 3:29 AM 1.7 ft4:23 PM 1.1 ft | 11.0 ft | |
| Fri, Nov 6Range 12.5 ft | 10:35 AM 12.7 ft11:25 PM 10.7 ft | 4:14 AM 2.0 ft5:05 PM 0.2 ft | 12.5 ft |
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Block Island, Tlevak Narrows 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 7.3 ft | 5:59 AM 10.0 ft5:03 PM 12.0 ft | 11:01 AM 4.7 ft | 7.3 ft |
| Sun, Nov 1Range 10.8 ft | 6:13 AM 9.9 ft5:19 PM 10.9 ft | 12:09 AM 0.1 ft11:24 AM 4.9 ft | 10.8 ft |
| Mon, Nov 2Range 9.4 ft | 7:26 AM 10.1 ft6:50 PM 10.1 ft | 12:21 AM 0.7 ft1:04 PM 4.5 ft | 9.4 ft |
| Tue, Nov 3Range 9.6 ft | 8:28 AM 10.7 ft8:18 PM 9.8 ft | 1:33 AM 1.1 ft2:30 PM 3.5 ft | 9.6 ft |
| Wed, Nov 4Range 10.0 ft | 9:18 AM 11.4 ft9:33 PM 10.0 ft | 2:36 AM 1.4 ft3:33 PM 2.3 ft | 10.0 ft |
| Thu, Nov 5Range 11.0 ft | 9:59 AM 12.1 ft10:34 PM 10.3 ft | 3:29 AM 1.7 ft4:23 PM 1.1 ft | 11.0 ft |
| Fri, Nov 6Range 12.5 ft | 10:35 AM 12.7 ft11:25 PM 10.7 ft | 4:14 AM 2.0 ft5:05 PM 0.2 ft | 12.5 ft |
| Sat, Nov 7Range 13.6 ft | 11:08 AM 13.1 ft | 4:55 AM 2.5 ft5:44 PM -0.5 ft | 13.6 ft |
| Sun, Nov 8Range 14.1 ft | 12:10 AM 10.9 ft11:40 AM 13.3 ft | 5:32 AM 2.9 ft6:19 PM -0.8 ft | 14.1 ft |
| Mon, Nov 9Range 14.2 ft | 12:51 AM 11.0 ft12:10 PM 13.3 ft | 6:08 AM 3.3 ft6:54 PM -0.9 ft | 14.2 ft |
| Tue, Nov 10Range 14.0 ft | 1:30 AM 11.0 ft12:41 PM 13.2 ft | 6:42 AM 3.8 ft7:28 PM -0.8 ft | 14.0 ft |
| Wed, Nov 11Range 13.3 ft | 2:08 AM 10.8 ft1:12 PM 12.8 ft | 7:16 AM 4.1 ft8:03 PM -0.5 ft | 13.3 ft |
| Thu, Nov 12Range 12.4 ft | 2:46 AM 10.5 ft1:45 PM 12.4 ft | 7:51 AM 4.5 ft8:40 PM 0.0 ft | 12.4 ft |
| Fri, Nov 13Range 11.3 ft | 3:28 AM 10.0 ft2:19 PM 11.8 ft | 8:27 AM 4.8 ft9:20 PM 0.5 ft | 11.3 ft |
Show days 15 to 30Hide days 15 to 30 | |||
| Sat, Nov 14Range 10.0 ft | 4:14 AM 9.6 ft2:58 PM 11.0 ft | 9:09 AM 5.1 ft10:03 PM 1.0 ft | 10.0 ft |
| Sun, Nov 15Range 8.7 ft | 5:07 AM 9.3 ft3:44 PM 10.2 ft | 10:00 AM 5.3 ft10:52 PM 1.5 ft | 8.7 ft |
| Mon, Nov 16Range 7.5 ft | 6:05 AM 9.2 ft4:45 PM 9.4 ft | 11:10 AM 5.3 ft11:47 PM 1.9 ft | 7.5 ft |
| Tue, Nov 17Range 4.5 ft | 7:01 AM 9.5 ft6:04 PM 8.8 ft | 12:38 PM 5.0 ft | 4.5 ft |
| Wed, Nov 18Range 7.8 ft | 7:50 AM 10.0 ft7:31 PM 8.6 ft | 12:46 AM 2.2 ft1:57 PM 4.2 ft | 7.8 ft |
| Thu, Nov 19Range 8.2 ft | 8:32 AM 10.7 ft8:48 PM 8.8 ft | 1:44 AM 2.5 ft2:55 PM 3.0 ft | 8.2 ft |
| Fri, Nov 20Range 9.9 ft | 9:10 AM 11.6 ft9:53 PM 9.4 ft | 2:36 AM 2.7 ft3:43 PM 1.7 ft | 9.9 ft |
| Sat, Nov 21Range 12.1 ft | 9:47 AM 12.5 ft10:49 PM 10.1 ft | 3:24 AM 2.9 ft4:27 PM 0.4 ft | 12.1 ft |
| Sun, Nov 22Range 14.2 ft | 10:24 AM 13.5 ft11:40 PM 10.8 ft | 4:09 AM 3.1 ft5:09 PM -0.7 ft | 14.2 ft |
| Mon, Nov 23Range 15.9 ft | 11:04 AM 14.3 ft | 4:54 AM 3.3 ft5:52 PM -1.6 ft | 15.9 ft |
| Tue, Nov 24Range 17.0 ft | 12:28 AM 11.3 ft11:46 AM 14.8 ft | 5:39 AM 3.5 ft6:37 PM -2.2 ft | 17.0 ft |
| Wed, Nov 25Range 17.5 ft | 1:16 AM 11.6 ft12:29 PM 15.1 ft | 6:25 AM 3.6 ft7:23 PM -2.4 ft | 17.5 ft |
| Thu, Nov 26Range 17.2 ft | 2:04 AM 11.6 ft1:16 PM 14.9 ft | 7:13 AM 3.8 ft8:11 PM -2.3 ft | 17.2 ft |
| Fri, Nov 27Range 16.1 ft | 2:55 AM 11.5 ft2:05 PM 14.3 ft | 8:04 AM 3.9 ft9:00 PM -1.8 ft | 16.1 ft |
| Sat, Nov 28Range 14.4 ft | 3:48 AM 11.3 ft2:58 PM 13.3 ft | 9:00 AM 4.1 ft9:52 PM -1.1 ft | 14.4 ft |
| Sun, Nov 29Range 12.2 ft | 4:44 AM 11.1 ft3:58 PM 12.0 ft | 10:04 AM 4.2 ft10:46 PM -0.2 ft | 12.2 ft |
Conditions at Block Island, Tlevak Narrows
From the National Weather Service forecast for this spot, with today's sunrise and sunset.
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About Block Island, Tlevak Narrows tides
Block Island, Tlevak Narrows is a NOAA subordinate station (9450406): NOAA predicts its times and heights from Sitka (9451600) 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, Block Island, Tlevak Narrows has two highs and two lows on 26 days and three turns on 4 days, and the daily range runs from 4.5 to 17.5 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 Block Island, Tlevak Narrows today?+
Today (Saturday, October 31), high tide at Block Island, Tlevak Narrows is at 5:59 AM (10.0 ft), 5:03 PM (12.0 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Block Island, Tlevak Narrows today?+
Today, low tide at Block Island, Tlevak Narrows is at 11:01 AM (4.7 ft).
What tidal datum do these Block Island, Tlevak Narrows 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?+
Block Island, Tlevak Narrows is a NOAA subordinate station (9450406). NOAA predicts its times and heights from Sitka (9451600) 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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