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Minor earthquake: M3.1 quake has struck near Little Sitkin Island in Alaska

Posted by admin on August 13, 2015 0 Comments

Earthquake location 50.271S, 178.566WA minor earthquake with magnitude 3.1 (ml/mb) was detected on Wednesday, 186 km S of Little Sitkin Island, Alaska (116 miles). Exact location of event, longitude 178.566 East, latitude 50.271 North, depth = 33.4 km. All ids that are associated to the event: ak11647388, us20002z3q. Unique identifier: us20002z3q. The earthquake was roughly at a depth of 33.4 km (21 miles). The 3.1-magnitude earthquake was detected at 16:51:28 / 4:51 pm (local time epicenter). Exact time and date of earthquake 15/07/15 / 2015-07-15 04:51:28 / July 15, 2015 @ 4:51 am UTC/GMT.

Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been three, in the last 10 days four, in the past 30 days five and in the last 365 days thirty-one earthquakes of magnitude 3.0 or greater that has occurred nearby.

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. 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: 186 km S of Little Sitkin Island, Alaska.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude 178.566° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.271° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 33.4 km Depth of the event in kilometers.
Place 186km S of Little Sitkin 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 2015-07-15 04:51:28 Time when the event occurred. UTC/GMT
Updated 2015-08-13 02:00:06 Time when the event was most recently updated. UTC/GMT
Timezone offset 720 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 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 0.9 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 us20002z3q Id of event.
Event Code 20002z3q An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak11647388,us20002z3q, A comma-separated list of event ids that are associated to an event.

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