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Minor earthquake, 3.4 mag was detected near Attu Station in Alaska


Earthquake location 52.7228S, 171.5776WA minor earthquake magnitude 3.4 (ml/mb) has occurred on Tuesday, 109 km W of Attu Station, Alaska (68 miles). Unique identifier: ak13738176. Ids that are associated to the event: ak13738176. The epicenter of the earthquake was roughly 25 km (16 miles) below the earth’s surface. The 3.4-magnitude earthquake was detected at 05:13:26 / 5:13 am (local time epicenter). Exact location, longitude 171.5776° East, latitude 52.7228° North, depth = 25 km. Date and time of earthquake in UTC/GMT: 04/07/16 / 2016-07-04 18:13:26 / July 4, 2016 @ 6:13 pm.

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 three, in the last 10 days three, in the past 30 days three and in the last 365 days twelve earthquakes of magnitude 3.0 or greater that have been detected nearby.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 109 km W of Attu Station, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.4 mb The magnitude for the event.
Longitude 171.5776° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.7228° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 25 km Depth of the event in kilometers.
Place 109km W of Attu Station, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-07-04 18:13:26 Time when the event occurred. UTC/GMT
Updated 2016-07-04 20:26:57 Time when the event was most recently updated. UTC/GMT
Timezone offset 660 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 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 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 0.46 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 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 ak13738176 Id of event.
Event Code 13738176 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak13738176, A comma-separated list of event ids that are associated to an event.

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