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Minor earthquake, 3.1 mag strikes near Sand Point in Alaska



Earthquake location 55.1047S, -160.4448WA minor earthquake magnitude 3.1 (ml/mb) has occurred on Thursday, 26 km S of Sand Point, Alaska (16 miles). Id of earthquake: us10008lbw. Event ids that are associated: ak15794984, us10008lbw. The epicenter of the earthquake was roughly 60.1 km (37 miles) below the earth’s surface. The temblor was reported at 07:32:49 / 7:32 am (local time epicenter). Exact location, longitude -160.4448° West, latitude 55.1047° North, depth = 60.1 km. Global time and date of event 20/04/17 / 2017-04-20 16:32:49 / April 20, 2017 @ 4:32 pm UTC/GMT.

Each year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been four, in the last 10 days four, in the past 30 days seven and in the last 365 days eighty-five 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.

How would you describe the shaking?

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. 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: 26 km S of Sand Point, Alaska.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -160.4448° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.1047° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 60.1 km Depth of the event in kilometers.
Place 26km S 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 2017-04-20 16:32:49 Time when the event occurred. UTC/GMT
Updated 2017-05-12 20:52:09 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 0.245 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.86 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 194 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 us10008lbw Id of event.
Event Code 10008lbw An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak15794984,us10008lbw, A comma-separated list of event ids that are associated to an event.

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