Tide station · Alaska

Block Island, Tlevak Narrows tides

Times are local (America/Sitka, GMT-9). Predicted tides, not live water levels. Not for navigation.

Right now

Rising

Next high 3:28 AM, 10.0 ft (3.06 m), in 1 h 59 min.

Today · Fri, Nov 13

  • High3:28 AM10.0 ft 3.06 m
  • Low8:27 AM4.8 ft 1.47 m
  • High2:19 PM11.8 ft 3.59 m
  • Low9:20 PM0.5 ft 0.14 m

Next 7 days

024681012Fri, Nov 13Sat, Nov 14Sun, Nov 15Mon, Nov 16Tue, Nov 17Wed, Nov 18Thu, Nov 19
Feet · orange dots are highs, black dots are lows
High and low tides for the next seven days
DayTides (local time, height)
Fri, Nov 13
  • H 3:28 AM · 10.0 ft
  • L 8:27 AM · 4.8 ft
  • H 2:19 PM · 11.8 ft
  • L 9:20 PM · 0.5 ft
Sat, Nov 14
  • H 4:14 AM · 9.6 ft
  • L 9:09 AM · 5.1 ft
  • H 2:58 PM · 11.0 ft
  • L 10:03 PM · 1.0 ft
Sun, Nov 15
  • H 5:07 AM · 9.3 ft
  • L 10:00 AM · 5.3 ft
  • H 3:44 PM · 10.2 ft
  • L 10:52 PM · 1.5 ft
Mon, Nov 16
  • H 6:05 AM · 9.2 ft
  • L 11:10 AM · 5.3 ft
  • H 4:45 PM · 9.4 ft
  • L 11:47 PM · 1.9 ft
Tue, Nov 17
  • H 7:01 AM · 9.5 ft
  • L 12:38 PM · 5.0 ft
  • H 6:04 PM · 8.8 ft
Wed, Nov 18
  • L 12:46 AM · 2.2 ft
  • H 7:50 AM · 10.0 ft
  • L 1:57 PM · 4.2 ft
  • H 7:31 PM · 8.6 ft
Thu, Nov 19
  • L 1:44 AM · 2.5 ft
  • H 8:32 AM · 10.7 ft
  • L 2:55 PM · 3.0 ft
  • H 8:48 PM · 8.8 ft

About this station

Block Island, Tlevak Narrows is a NOAA subordinate station in Alaska: its highs and lows are offsets from Sitka. Heights are feet above mean lower low water (MLLW).

Tide type: Mixed, mostly semidiurnal: two highs and two lows a day, one pair noticeably bigger than the other.

This week the biggest swing between high and low is 11.3 ft; the average swing is 6.6 ft.

Station facts

Station ID
9450406
Source
NOAA CO-OPS
Type
Subordinate station
Reference station
Sitka
Coordinates
55.2633, -133.1150
Datum
MLLW (mean lower low water)
Tide type
Mixed, mostly semidiurnal
Time zone
America/Sitka

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Tide predictions from NOAA CO-OPS (tidesandcurrents.noaa.gov).

Licence: U.S. public domain (NOAA). Predictions are astronomical tides only: wind, swell and pressure move real water. Not for navigation.