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Minor earthquake: M3 quake has struck near Semisopochnoi Island in Alaska



Earthquake location 51.1863S, 179.4833WA minor earthquake magnitude 3 (ml/mb) has occurred on Monday, 85 km S of Semisopochnoi Island, Alaska (53 miles). Exact location of earthquake, 179.4833° East, 51.1863° North, depth 30.5 km. Global time and date of event 22/05/17 / 2017-05-22 12:19:40 / May 22, 2017 @ 12:19 pm UTC/GMT. The epicenter was at a depth of 30.5 km (19 miles). The 3-magnitude earthquake has occurred at 02:19:40 / 2:19 am (local time epicenter). Id of earthquake: us20009l5g. Event ids that are associated: ak16175926, us20009l5g.

There are an estimated 130,000 minor earthquakes in the world each year. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. In the past 24 hours, there have been eight, in the last 10 days twelve, in the past 30 days thirty-seven and in the last 365 days one hundred and fourty-nine earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 85 km S of Semisopochnoi Island, Alaska.

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More information

Parameter Value Description
Magnitude 3 mb The magnitude for the event.
Longitude 179.4833° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1863° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 30.5 km Depth of the event in kilometers.
Place 85km S of Semisopochnoi 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 2017-05-22 12:19:40 Time when the event occurred. UTC/GMT
Updated 2017-06-09 05:40:58 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 138 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.223 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.26 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 224 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 us20009l5g Id of event.
Event Code 20009l5g An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16175926,us20009l5g, A comma-separated list of event ids that are associated to an event.

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