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Passage Canal runs a big tide — the water often moves 10 to 12 feet between low and high, and minus tides bare the shore. The boat launch, the small-boat harbor, and anything you do along the water all turn on it. Here are the predicted highs and lows, today and the week ahead.
The predicted tide, not the water you'll see
These are astronomical predictions — the tide the sun and moon set. A strong wind up the canal or a big low-pressure system can push the real level higher or lower, and shift the timing. Before a launch, pair this with the Passage Canal wind page and the marine forecast, and trust your own eyes on the ramp.
Right now
Going out
The tide is
water now about 11.4 ft (3.5 m), estimated from the predicted highs and lows
2:40 PM
Next high water
13.8 ft (4.2 m)
8:38 AM
Next low water
2.1 ft (0.6 m)
Today
Time
Tide
Height
3:00 AM
High water
11.9 ft (3.6 m)
8:38 AM
Low water
2.1 ft (0.6 m)
2:40 PM
High water
13.8 ft (4.2 m)
9:15 PM
Low water
-0.9 ft (-0.3 m)
The week ahead
Day
Time
Tide
Height
Tue, Oct 13
3:36 AM
High
11.5 ft (3.5 m)
9:12 AM
Low
3.0 ft (0.9 m)
3:06 PM
High
13.5 ft (4.1 m)
9:53 PM
Low
-0.3 ft (-0.1 m)
Wed, Oct 14
4:12 AM
High
10.9 ft (3.3 m)
9:47 AM
Low
4.0 ft (1.2 m)
3:34 PM
High
13.1 ft (4.0 m)
10:32 PM
Low
0.5 ft (0.2 m)
Thu, Oct 15
4:51 AM
High
10.2 ft (3.1 m)
10:23 AM
Low
4.9 ft (1.5 m)
4:03 PM
High
12.4 ft (3.8 m)
11:14 PM
Low
1.4 ft (0.4 m)
Fri, Oct 16
5:41 AM
High
9.4 ft (2.9 m)
11:03 AM
Low
5.7 ft (1.7 m)
4:36 PM
High
11.5 ft (3.5 m)
Sat, Oct 17
12:03 AM
Low
2.3 ft (0.7 m)
7:01 AM
High
8.8 ft (2.7 m)
11:52 AM
Low
6.3 ft (1.9 m)
Heights are above mean lower low water (MLLW) — roughly the average lowest tide — not above the dock or the sand. Times are local (AKDT). NOAA's prediction point sits in Passage Canal at Whittier, about a mile from the small-boat harbor — the closest official station to town, so the harbor water follows it closely.
Predictions, not measurements
These are astronomical tide predictions. Wind, air pressure and storm surge can push the real water level well above or below them — in bad weather, check the National Weather Service forecast and warnings at weather.gov before trusting a number here. In an emergency on or near the water, call 911, or hail the U.S. Coast Guard on marine VHF channel 16. Whittier Harbor monitors VHF 16 and works on 68 (907-472-2327).
Official predictions for station Whittier, Passage Canal (9454949) from NOAA Tides & Currents, National Ocean Service (CO-OPS). Retrieved October 12 at 3:48 AM.