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Minor earthquake 3.1 mag, 73 km N of Sand Point, Alaska


Earthquake location 55.9976S, -160.4781WA minor earthquake magnitude 3.1 (ml/mb) has struck on Monday, 73 km N of Sand Point, Alaska (45 miles). The temblor was detected at 11:44:50 / 11:44 am (local time epicenter). Exact location of earthquake, -160.4781° West, 55.9976° North, depth 142.8 km. Event id: us2000aure. Ids that are associated to the earthquake: ak16851331, us2000aure. The earthquake occurred at a depth of 142.8 km (89 miles). Exact time and date of earthquake 18/09/17 / 2017-09-18 20:44:50 / September 18, 2017 @ 8:44 pm UTC/GMT.

In the past 24 hours, there have been four, in the last 10 days four, in the past 30 days five and in the last 365 days thirty-nine earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. 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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 73 km N of Sand Point, Alaska.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -160.4781° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.9976° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 142.8 km Depth of the event in kilometers.
Place 73km N of Sand Point, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-09-18 20:44:50 Time when the event occurred. UTC/GMT
Updated 2017-10-09 16:21:47 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 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 148 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.48 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 us2000aure Id of event.
Event Code 2000aure An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16851331,us2000aure, A comma-separated list of event ids that are associated to an event.

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