Atka tides
Today, Wednesday, October 28, 2026 · local time (HADT) · Alaska, United States- 4:27 pm4.0 ft
- 1:56 am-0.9 ft
- Tide now
- 3.9 ft ↑ rising · high 4:27 pm (4.0 ft)
- Coefficient
- 112 · big spring tides
- Range today
- 4.9 ft
Today there is high tide at 4:27 pm (4.0 ft) and low tide at 1:56 am. Tide coefficient 112. Right now the tide is rising toward the high tide at 4:27 pm. In Atka the tide is diurnal: one high and one low tide a day most days. The next spring tides: from October 26 to 28.
Today's high and low tides
- ▼ Low tide 1:56 am -0.9 ft
- ▲ Next high tide 4:27 pm 4.0 ft · coef. 112
↑ Rising The tide is rising. 2 h 33 min to high tide at 4:27 pm.
Tide coefficient 112 for the 4:27 pm high tide. Big spring tides. The water rises and falls 4.9 ft between the highest high and the lowest low: a large range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?
Heights above mean lower low water (MLLW), the zero of US nautical charts. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation.
Tides for the next 7 days
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Wed 28 | 9:26 am · 7:15 pm | Low tide 1:56 am · -0.9 ft | High tide 4:27 pm · 4.0 ft | — | — | Coef. 112 | 90% | Major periods 3:29 am · 4:01 pm | High |
| Thu 29 | 9:28 am · 7:13 pm | Low tide 2:48 am · -1.2 ft | High tide 5:44 pm · 4.0 ft | — | — | Coef. 115 | 82% | Major periods 4:33 am · 5:06 pm | High |
| Fri 30 | 9:29 am · 7:11 pm | Low tide 3:40 am · -1.3 ft | High tide 7:10 pm · 4.0 ft | — | — | Coef. 112 | 72% | Major periods 5:38 am · 6:09 pm | Medium |
| Sat 31 | 9:31 am · 7:09 pm | Low tide 4:30 am · -1.2 ft | High tide 1:34 pm · 3.6 ft | Low tide 4:30 pm · 3.4 ft | High tide 8:33 pm · 3.8 ft | Coef. 105 | 61% | Major periods 6:39 am · 7:08 pm | Medium |
| Sun 1 | 8:33 am · 6:07 pm | Low tide 4:18 am · -1.0 ft | High tide 12:46 pm · 3.4 ft | Low tide 4:36 pm · 3.0 ft | High tide 8:53 pm · 3.5 ft | Coef. 91 | Last quarter | Major periods 6:35 am · 7:02 pm | Medium |
| Mon 2 | 8:35 am · 6:05 pm | Low tide 5:04 am · -0.5 ft | High tide 1:01 pm · 3.3 ft | Low tide 5:42 pm · 2.5 ft | High tide 10:13 pm · 3.1 ft | Coef. 72 | 38% | Major periods 7:27 am · 7:51 pm | Medium |
| Tue 3 | 8:37 am · 6:03 pm | Low tide 5:47 am · 0.1 ft | High tide 1:17 pm · 3.2 ft | Low tide 6:48 pm · 2.0 ft | High tide 11:43 pm · 2.7 ft | Coef. 49 | 28% | Major periods 8:15 am · 8:38 pm | Medium |
▲ high tide · ▼ low tide · heights above MLLW. Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.
Tide coefficient and range in October
The biggest tides of the month come on October 29 (coefficient 115, 5.2 ft range). The smallest, on October 23 (coefficient 20, 1.4 ft).
Type of tide
In Atka the tide is diurnal: one high and one low tide a day most days. Types of tides
2026 extremes: the highest tide of the year is on December 23 (5.1 ft) and the lowest, on May 19 (-1.9 ft).
Reference levels
- Highest astronomical tide (HAT)5.2 ft
- Mean higher high water (MHHW)3.4 ft
- Mean high water (MHW)3.2 ft
- Mean sea level (MSL)2.0 ft
- Mean low water (MLW)0.5 ft
- Mean lower low water (MLLW)0.0 ft
- Lowest astronomical tide (LAT)-1.9 ft
Heights above mean lower low water (MLLW), the zero of US nautical charts.
Questions about the tides in Atka
What time is high tide today in Atka?
High tide today is at 4:27 pm (4.0 ft). Low tide is at 1:56 am.
What time is high tide tomorrow in Atka?
On Thursday, October 29, high tide at 5:44 pm and low tide at 2:48 am.
What is today's tide coefficient?
112: big spring tides. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides.
When are the next spring tides?
From October 26 to 28, after the new or full moon, with the moon near perigee, so they will be bigger than usual.
How many tides a day are there in Atka?
The tide is diurnal: one high and one low tide a day most days. Each high tide comes about 50 minutes later than the day before.
What are the heights measured from?
From mean lower low water (MLLW), the zero of US nautical charts. That is why a low tide can be negative: that day the water drops below that zero.
Can I use these tides for navigation?
No. They are astronomical predictions for planning fishing and outings; for navigation use official publications and nautical charts.
More about Atka today
Tides near Atka
Each place with its own tide station; next to it, the time of its first high tide today.
Learn more
Tides from the Atka station (NOAA), 2.7 mi from Atka. Times and heights are its predictions. Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database)