Aleutian Islands · AK
Amchitka
The island of three underground nuclear tests.
- Unangan settlement
- 2,500+ years
- Cannikin test
- November 6, 1971
- Tides
- One high, one low a day
Then
- 1832
The last permanent residents leave.
- 1943
US forces land in January and build an airfield.
- 1965–1971
Long Shot, Milrow and Cannikin are set off underground. Protests over Milrow give rise to Greenpeace.
Now
Amchitka is part of the Alaska Maritime National Wildlife Refuge.
On the water
From NOAA's predictions for Constantine Harbor, Amchitka Island over the next 349 days. Heights are in feet above mean lower low water (MLLW).
- Pattern
- Usually one high and one low a day
- Typical daily range
- 3.0 ft
- Biggest swing
- 5.4 ft on Dec 24
- Smallest swing
- 0.5 ft on Oct 2
- Highest high
- 4.2 ft, Dec 23 at 1:19 PM
- Lowest low
- −1.4 ft, Jun 6 at 11:29 AM