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Minor earthquake, 3.1 mag was detected near Alaska

Earthquake location 56.1777S, -149.8629WA minor earthquake magnitude 3.1 (ml/mb) has occurred on Monday, Gulf of Alaska (0 miles). Exact location of earthquake, longitude -149.8629 West, latitude 56.1777 North, depth = 15 km. Event id: ak20119560. Ids that are associated to the earthquake: ak20119560. The 3.1-magnitude earthquake has occurred at 02:57:41 / 2:57 am (local time epicenter). Exact time and date of event in UTC/GMT: 20/08/18 / 2018-08-20 02:57:41 / August 20, 2018 @ 2:57 am. The earthquake occurred at a depth of 15 km (9 miles).

In the past 24 hours, there have been five, in the last 10 days twenty, in the past 30 days seventy and in the last 365 days three thousand, eight hundred and fifty-one earthquakes of magnitude 3.0 or greater that have been detected nearby. 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.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: Gulf of Alaska.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -149.8629° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.1777° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 15 km Depth of the event in kilometers.
Place Gulf of Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-08-20 02:57:41 Time when the event occurred. UTC/GMT
Updated 2018-08-30 00:22:34 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 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 0.65 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 ak20119560 Id of event.
Event Code 20119560 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20119560, A comma-separated list of event ids that are associated to an event.

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