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

Posted by admin on July 13, 2018 0 Comments

Earthquake location 51.8787S, 179.0526WA minor earthquake magnitude 3.1 (ml/mb) strikes 38 km WSW of Semisopochnoi Island, Alaska (24 miles) on Monday. The epicenter of the earthquake was roughly 112.3 km (70 miles) below the earth’s surface. The temblor was picked up at 12:45:05 / 12:45 pm (local time epicenter). All ids that are associated to the event: ak19851350. Unique identifier: ak19851350. Exact location of event, longitude 179.0526 East, latitude 51.8787 North, depth = 112.3 km. Global time and date of event 09/07/18 / 2018-07-09 00:45:05 / July 9, 2018 @ 12:45 am UTC/GMT.

In the past 24 hours, there have been two, in the last 10 days seven, in the past 30 days twelve and in the last 365 days one hundred and eighteen earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 130,000 minor quakes in the world each year. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

Did you feel anything?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 38 km WSW of Semisopochnoi Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude 179.0526° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.8787° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 112.3 km Depth of the event in kilometers.
Place 38km WSW of Semisopochnoi 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 2018-07-09 00:45:05 Time when the event occurred. UTC/GMT
Updated 2018-07-13 00:27:25 Time when the event was most recently updated. UTC/GMT
Timezone offset 720 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 0.54 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 ak19851350 Id of event.
Event Code 19851350 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak19851350, A comma-separated list of event ids that are associated to an event.

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