Magnitude 5.4 ANDREANOF ISLANDS, ALEUTIAN IS.
Tuesday, April 21, 2009 at 08:37:30 UTC
Preliminary Earthquake Report
Magnitude | 5.4 |
---|---|
Date-Time |
Time of Earthquake in other Time Zones |
Location | 52.24N 173.52W |
Depth | 53 kilometers |
Region | ANDREANOF ISLANDS, ALEUTIAN IS. |
Distances |
55 km (35 miles) E of Atka, Alaska 150 km (95 miles) W of Amukta Island, Alaska 1740 km (1080 miles) WSW of Anchorage, Alaska 2535 km (1570 miles) W of JUNEAU, Alaska |
Location Uncertainty | Error estimate: horizontal +/- 4.6 km; depth +/- 2.5 km |
Parameters | Nst=310, Nph=310, Dmin=43.3 km, Rmss=0.76 sec, Erho=4.6 km, Erzz=2.5 km, Gp=87.1 degrees |
Source | USGS NEIC (WDCS-D) |
Remarks | Felt at Atka. |
Event ID | usfsa1 |
Location Maps
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Theoretical P-Wave Travel Times
Earthquake Information for Alaska
Alaska Earthquake Information Center
Earthquakes: Frequently Asked Questions
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NB:
The official magnitude for this earthquake is indicated at the top of this page.
This was the best available estimate of the earthquake's size,
at the time that this page was created. Other magnitudes associated
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Although, given the data used, they are legitimate estimates of magnitude
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The boundaries of
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Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver