Block Island, Tlevak Narrows Tide Chart
Alaska · NOAA Station 9450406 · 55.263°, -133.115°
Want live wind, waves, and radar right on your chart? See it in Pathr →
This Week’s Tides for Block Island, Tlevak Narrows
High and low tide times and heights (ft, MLLW) for the week ahead.
| Low | 2:08 AM | 1.6 ft |
| High | 8:22 AM | 7.1 ft |
| Low | 1:18 PM | 3.6 ft |
| High | 8:00 PM | 10.5 ft |
| Low | 3:20 AM | 1.4 ft |
| High | 9:57 AM | 7.0 ft |
| Low | 2:25 PM | 4.4 ft |
| High | 8:57 PM | 10.3 ft |
| Low | 4:26 AM | 1.0 ft |
| High | 11:21 AM | 7.5 ft |
| Low | 3:43 PM | 4.8 ft |
| High | 9:58 PM | 10.4 ft |
| Low | 5:21 AM | 0.6 ft |
| High | 12:18 PM | 8.1 ft |
| Low | 4:51 PM | 4.7 ft |
| High | 10:55 PM | 10.7 ft |
| Low | 6:06 AM | 0.1 ft |
| High | 12:58 PM | 8.6 ft |
| Low | 5:44 PM | 4.4 ft |
| High | 11:44 PM | 11.1 ft |
| Low | 6:45 AM | -0.4 ft |
| High | 1:31 PM | 9.1 ft |
| Low | 6:28 PM | 4.0 ft |
| High | 12:27 AM | 11.5 ft |
| Low | 7:20 AM | -0.8 ft |
| High | 2:01 PM | 9.5 ft |
| Low | 7:07 PM | 3.5 ft |
Block Island, Tlevak Narrows Tide Table — Next 30 Days
Every high and low tide for the next month at Block Island, Tlevak Narrows, with heights in feet (MLLW), the daily tidal range, and sunrise & sunset.
| Day | Sunrise | Sunset | Tides (time · ft, MLLW) | Range | |||
|---|---|---|---|---|---|---|---|
| Wed, Jul 22Today | 4:43 AM | 9:14 PM | Low2:08 AM1.6 ft | High8:22 AM7.1 ft | Low1:18 PM3.6 ft | High8:00 PM10.5 ft | 8.9 ft |
| Thu, Jul 23 | 4:44 AM | 9:13 PM | Low3:20 AM1.4 ft | High9:57 AM7.0 ft | Low2:25 PM4.4 ft | High8:57 PM10.3 ft | 8.9 ft |
| Fri, Jul 24 | 4:46 AM | 9:11 PM | Low4:26 AM1.0 ft | High11:21 AM7.5 ft | Low3:43 PM4.8 ft | High9:58 PM10.4 ft | 9.4 ft |
| Sat, Jul 25 | 4:48 AM | 9:09 PM | Low5:21 AM0.6 ft | High12:18 PM8.1 ft | Low4:51 PM4.7 ft | High10:55 PM10.7 ft | 10.1 ft |
| Sun, Jul 26 | 4:49 AM | 9:08 PM | Low6:06 AM0.1 ft | High12:58 PM8.6 ft | Low5:44 PM4.4 ft | High11:44 PM11.1 ft | 11.0 ft |
| Mon, Jul 27 | 4:51 AM | 9:06 PM | Low6:45 AM-0.4 ft | High1:31 PM9.1 ft | Low6:28 PM4.0 ft | — | 9.5 ft |
| Tue, Jul 28 | 4:53 AM | 9:04 PM | High12:27 AM11.5 ft | Low7:20 AM-0.8 ft | High2:01 PM9.5 ft | Low7:07 PM3.5 ft | 12.3 ft |
| Wed, Jul 29 | 4:55 AM | 9:02 PM | High1:05 AM11.8 ft | Low7:52 AM-1.1 ft | High2:29 PM9.9 ft | Low7:44 PM3.1 ft | 12.9 ft |
| Thu, Jul 30 | 4:56 AM | 9:00 PM | High1:42 AM11.9 ft | Low8:23 AM-1.3 ft | High2:57 PM10.3 ft | Low8:20 PM2.6 ft | 13.2 ft |
| Fri, Jul 31 | 4:58 AM | 8:59 PM | High2:18 AM11.8 ft | Low8:52 AM-1.2 ft | High3:25 PM10.6 ft | Low8:57 PM2.2 ft | 13.0 ft |
| Sat, Aug 1 | 5:00 AM | 8:57 PM | High2:54 AM11.5 ft | Low9:21 AM-0.9 ft | High3:53 PM10.9 ft | Low9:36 PM1.8 ft | 12.4 ft |
| Sun, Aug 2 | 5:02 AM | 8:55 PM | High3:33 AM11.0 ft | Low9:51 AM-0.4 ft | High4:22 PM11.2 ft | Low10:17 PM1.5 ft | 11.6 ft |
| Mon, Aug 3 | 5:04 AM | 8:53 PM | High4:15 AM10.2 ft | Low10:21 AM0.4 ft | High4:53 PM11.4 ft | Low11:04 PM1.3 ft | 11.0 ft |
| Tue, Aug 4 | 5:05 AM | 8:51 PM | High5:05 AM9.3 ft | Low10:55 AM1.3 ft | High5:29 PM11.6 ft | Low11:58 PM1.2 ft | 10.4 ft |
| Wed, Aug 5 | 5:07 AM | 8:49 PM | High6:05 AM8.4 ft | Low11:33 AM2.4 ft | High6:12 PM11.6 ft | — | 9.2 ft |
| Thu, Aug 6 | 5:09 AM | 8:47 PM | Low1:04 AM1.0 ft | High7:22 AM7.7 ft | Low12:23 PM3.4 ft | High7:07 PM11.6 ft | 10.6 ft |
| Fri, Aug 7 | 5:11 AM | 8:44 PM | Low2:23 AM0.8 ft | High9:00 AM7.4 ft | Low1:35 PM4.2 ft | High8:15 PM11.6 ft | 10.8 ft |
| Sat, Aug 8 | 5:13 AM | 8:42 PM | Low3:43 AM0.2 ft | High10:36 AM7.9 ft | Low3:08 PM4.5 ft | High9:31 PM11.9 ft | 11.7 ft |
| Sun, Aug 9 | 5:15 AM | 8:40 PM | Low4:52 AM-0.6 ft | High11:45 AM8.8 ft | Low4:33 PM4.2 ft | High10:43 PM12.4 ft | 13.0 ft |
| Mon, Aug 10 | 5:17 AM | 8:38 PM | Low5:49 AM-1.4 ft | High12:36 PM9.7 ft | Low5:40 PM3.5 ft | High11:46 PM13.0 ft | 14.4 ft |
| Tue, Aug 11 | 5:18 AM | 8:36 PM | Low6:39 AM-2.0 ft | High1:18 PM10.5 ft | Low6:36 PM2.6 ft | — | 12.5 ft |
| Wed, Aug 12 | 5:20 AM | 8:34 PM | High12:42 AM13.4 ft | Low7:23 AM-2.3 ft | High1:57 PM11.3 ft | Low7:27 PM1.8 ft | 15.7 ft |
| Thu, Aug 13 | 5:22 AM | 8:31 PM | High1:32 AM13.4 ft | Low8:04 AM-2.2 ft | High2:33 PM11.8 ft | Low8:14 PM1.1 ft | 15.6 ft |
| Fri, Aug 14 | 5:24 AM | 8:29 PM | High2:19 AM13.1 ft | Low8:42 AM-1.8 ft | High3:08 PM12.1 ft | Low8:59 PM0.7 ft | 14.9 ft |
| Sat, Aug 15 | 5:26 AM | 8:27 PM | High3:04 AM12.4 ft | Low9:18 AM-1.0 ft | High3:43 PM12.2 ft | Low9:44 PM0.5 ft | 13.4 ft |
| Sun, Aug 16 | 5:28 AM | 8:24 PM | High3:50 AM11.4 ft | Low9:52 AM0.0 ft | High4:16 PM12.1 ft | Low10:28 PM0.6 ft | 12.1 ft |
| Mon, Aug 17 | 5:30 AM | 8:22 PM | High4:36 AM10.2 ft | Low10:25 AM1.1 ft | High4:50 PM11.7 ft | Low11:14 PM0.9 ft | 10.8 ft |
| Tue, Aug 18 | 5:32 AM | 8:20 PM | High5:26 AM9.1 ft | Low10:59 AM2.3 ft | High5:26 PM11.2 ft | — | 8.9 ft |
| Wed, Aug 19 | 5:33 AM | 8:17 PM | Low12:06 AM1.3 ft | High6:26 AM8.1 ft | Low11:35 AM3.5 ft | High6:06 PM10.6 ft | 9.3 ft |
| Thu, Aug 20 | 5:35 AM | 8:15 PM | Low1:09 AM1.7 ft | High7:44 AM7.3 ft | Low12:20 PM4.4 ft | High6:57 PM10.1 ft | 8.4 ft |
About Block Island, Tlevak Narrows tides
Tide predictions for Block Island, Tlevak Narrows come from NOAA station 9450406 (Alaska), computed from long-term harmonic analysis of observed water levels. Heights are shown in feet relative to MLLW (Mean Lower Low Water) — the same datum used on US nautical charts — so they line up directly with charted depths.
Block Island, Tlevak Narrows typically sees a mixed semidiurnal tide, with two highs and two lows of differing heights each day. 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 and pressure can push the real water level above or below prediction. The daily tidal range in the 30-day table 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 (Wednesday, July 22), high tide at Block Island, Tlevak Narrows is at 8:22 AM (7.1 ft), 8:00 PM (10.5 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 2:08 AM (1.6 ft), 1:18 PM (3.6 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?+
These are NOAA harmonic predictions — highly accurate for the astronomical tide. Real water levels can still differ with wind, barometric pressure, and storms, so always check current conditions before getting underway.
Never mistime a tide again.
Block Island, Tlevak Narrows tides, NOAA charts, live wind & waves, and smart routing — all on your phone with Pathr — free for your first two months on iOS.