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Light earthquake, 4.2 mag was detected near Semisopochnoi Island in Alaska

Posted by admin on July 15, 2017 0 Comments

Earthquake location 51.5588S, 179.8615WA light earthquake magnitude 4.2 (ml/mb) strikes 47 km SSE of Semisopochnoi Island, Alaska (29 miles) on Sunday. The earthquake was roughly at a depth of 60.25 km (37 miles). The temblor was detected at 04:11:13 / 4:11 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 15/07/17 / 2017-07-15 16:11:13 / July 15, 2017 @ 4:11 pm. Exact location of event, depth 60.25 km, 179.8615° East, 51.5588° North. Event ids that are associated to the earthquake: ak16335429, us20009wle. Id of event: us20009wle.

In the past 24 hours, there have been two, in the last 10 days five, in the past 30 days eight and in the last 365 days one hundred and fourty earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Did you feel anything?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 47 km SSE of Semisopochnoi Island, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 179.8615° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.5588° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 60.25 km Depth of the event in kilometers.
Place 47km SSE 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 2017-07-15 16:11:13 Time when the event occurred. UTC/GMT
Updated 2017-07-15 20:08:47 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 271 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 0.389 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.75 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 160 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us20009wle Id of event.
Event Code 20009wle An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16335429,us20009wle, A comma-separated list of event ids that are associated to an event.

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