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Minor earthquake: M3.4 quake has struck near Chirik

Earthquake location 54.7882S, -154.0394WA minor earthquake magnitude 3.4 (ml/mb) has struck on Friday, 153 km SE of Chirikof Island, Alaska (95 miles). The earthquake occurred at a depth of 15.65 km (10 miles) below the earth’s surface. The temblor was detected at 03:15:28 / 3:15 am (local time epicenter). Unique identifier: us2000d6vg. Ids that are associated to the event: ak18500571, us2000d6vg. Global time and date of event 23/02/18 / 2018-02-23 13:15:28 / February 23, 2018 @ 1:15 pm UTC/GMT. Exact location, longitude -154.0394° West, latitude 54.7882° North, depth = 15.65 km.

Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days two and in the last 365 days five earthquakes of magnitude 3.0 or greater that have been detected in the same area. Every year there are an estimated 130,000 minor earthquakes in the world.

Questions or comments?

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 information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 153 km SE of Chirikof Island, Alaska.

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More information

Parameter Value Description
Magnitude 3.4 mb The magnitude for the event.
Longitude -154.0394° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.7882° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 15.65 km Depth of the event in kilometers.
Place 153km SE 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 2018-02-23 13:15:28 Time when the event occurred. UTC/GMT
Updated 2018-02-23 13:26:48 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 178 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 2.476 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.09 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 204 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 us2000d6vg Id of event.
Event Code 2000d6vg An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18500571,us2000d6vg, A comma-separated list of event ids that are associated to an event.

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