Reviewed by USGSAlaska18y ago
M3.6 earthquake in Rat Islands, Aleutian Islands, Alaska
Thursday, March 27, 2008, 08:01:18 UTC · 50.216°N, 179.669°E
A magnitude 3.6 earthquake struck in Rat Islands, Aleutian Islands, Alaska on Thursday, March 27, 2008, 08:01:18 UTC, at a depth of 29.5 km (shallow).
- Magnitude
- 3.6
- Minor · ml
- Depth
- 30 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 earthquake
In context
How big was it, and why here?
Energy released
4 tons of TNT
That is about 1/3,975 of the Hiroshima bomb. A magnitude 5.0 releases about 126 times more energy.
Tectonic setting
33 km
from the nearest mapped plate boundary, between the North American and Pacific plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
30 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 has not published any M2.5+ earthquake within 50 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 811 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.71965 Western Aleutian Islands (Hawadax/Rat Islands) EarthquakeFebruary 4, 1965 · 133 km NW of this epicenter
- 8.31906 Western Aleutian Islands (Hawadax/Rat Islands) EarthquakeAugust 17, 1906 · 210 km NW of this epicenter
- 7.977 km WSW of Adak, AlaskaJune 10, 1996 · 241 km NE of this epicenter
- 7.8Rat Islands, Aleutian Islands, AlaskaNovember 17, 2003 · 126 km NW of this epicenter
- 7.6Rat Islands, Aleutian Islands, AlaskaMarch 30, 1965 · 128 km W of this epicenter
- 7.4265 km WSW of Adak, AlaskaFebruary 4, 1965 · 136 km N of this epicenter
- 7.388 km WSW of Adak, AlaskaJuly 7, 1929 · 229 km NE of this epicenter
- 7.346 km SSW of Adak, AlaskaJune 10, 1996 · 282 km NE of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 12 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:
- 1965M8.7
Aleutian Islands: Rat Islands
4 Feb 1965 · 133 km away · intensity VI
Under $1 million damagetsunami
- 1906M8.3
Aleutian Islands: Rat Islands
17 Aug 1906 · 210 km away
- 1905M7.9
Andreanof Islands
14 Feb 1905 · 138 km away
- 1996M7.9
Andreanof Islands
10 Jun 1996 · 241 km away · intensity VI
tsunami
- 2003M7.8
Aleutian Islands: Rat Islands
17 Nov 2003 · 126 km away
tsunami
- 1916M7.7
Aleutian Islands
6 Feb 1916 · 209 km away
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.