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Minor earthquake 2.8 mag, 129 km WSW of Chirikof Island, Alaska


Earthquake location 55.3249S, -157.473WA minor earthquake magnitude 2.8 (mg/mb) was reported Thursday, 129 kilometers (80 miles) from Chirik. The temblor was reported at 08:40:34 / 8:40 am (local time epicenter) at a depth of 49.1 km (31 miles). Global time of event 09/04/15 / 2015-04-09 18:40:34 / April 9, 2015 @ 6:40 pm UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude -157.473 West, latitude 55.3249 North, depth 49.1 km, unique identifier, ak11554050.

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Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded in: 129 km WSW of Chirikof Island, Alaska.


More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -157.473° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.3249° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 49.1 km Depth of the event in kilometers.
Place 129km WSW of Chirikof Island, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-04-09 18:40:34 Time when the event occurred. UTC/GMT
Updated 2015-04-16 00:53:21 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 121 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak, A comma-separated list of network contributors.
Number of Stations Used 8 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.73 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 215.99998272 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ak11554050 Id of event.
Event Code 11554050 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak11554050, A comma-separated list of event ids that are associated to an event.

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