Reviewed by USGSAlaska26y ago
M3.2 earthquake 9 km WSW of Ouzinkie, Alaska
Tuesday, February 29, 2000, 13:27:24 UTC · 57.900°N, 152.650°W
A magnitude 3.2 earthquake struck 9 km WSW of Ouzinkie, Alaska on Tuesday, February 29, 2000, 13:27:24 UTC, at a depth of 40.1 km (shallow).
- Magnitude
- 3.2
- Minor · ml
- Depth
- 40 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeDashed circle: 50 km aftershock search area
In context
How big was it, and why here?
Energy released
951 kg of TNT
That is about 1/15,825 of the Hiroshima bomb. A magnitude 5.0 releases about 501 times more energy.
Tectonic setting
195 km
from the nearest mapped plate boundary, between the North American and Pacific plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
40 km
Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.
Did You Feel It?
Where it was felt
No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.
I felt it — report to USGS ↗USGS PAGER estimate
Who was exposed to shaking
USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.
After the main event
Aftershocks within 50 km
USGS lists 1 M2.5+ earthquake within 50 km in the following 30 days; the largest was M4.7 on March 16, 2000. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 328 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.9Kodiak Island region, AlaskaOctober 9, 1900 · 113 km SE of this epicenter
- 7.14 km ENE of Karluk, AlaskaNovember 7, 1912 · 109 km W of this epicenter
- 7.0153 km SE of Halibut Cove, AlaskaDecember 23, 1906 · 200 km NE of this epicenter
- 7.026 km SSE of Karluk, AlaskaDecember 6, 1999 · 119 km SW of this epicenter
- 6.8100 km SSE of Old Harbor, AlaskaJune 19, 1986 · 175 km S of this epicenter
- 6.817 km N of Ouzinkie, AlaskaSeptember 4, 1965 · 21 km N of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 9 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:
- 1900M8.3
Kodiak Island
9 Oct 1900 · 103 km away · intensity VIII
Limited damage (under $1M)
- 1788M8.0
Unga Island
21 Jul 1788 · 102 km away · intensity VII
Limited damage (under $1M)tsunami
- 1970M6.0
Andreanof Islands
11 Mar 1970 · 87 km away · intensity V
Limited damage (under $1M)tsunami
- 1792
Kodiak Island
1792 · 107 km away · intensity VII
Limited damage (under $1M)tsunami
- 1906M7.6
Aleutian Islands
23 Dec 1906 · 139 km away
- 1912M7.5
Alaska Peninsula
7 Nov 1912 · 147 km away · intensity V
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.