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Light earthquake 4 mag, 91 km S of Semisopochnoi Island, Alaska

Posted by admin on April 23, 2016 0 Comments

Earthquake location 51.1284S, 179.473WA light earthquake magnitude 4 (ml/mb) strikes 91 km S of Semisopochnoi Island, Alaska (57 miles) on Tuesday. The 4-magnitude earthquake has occurred at 00:16:54 / 12:16 am (local time epicenter). Global date and time of event UTC/GMT: 11/04/16 / 2016-04-11 12:16:54 / April 11, 2016 @ 12:16 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 54.32 km (34 miles). Exact location of event, depth 54.32 km, 179.473° East, 51.1284° North. Id of earthquake: us20005gy6. Event ids that are associated: ak13424637, us20005gy6.

Each year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been eighteen, in the last 10 days eighteen, in the past 30 days nineteen and in the last 365 days one hundred and thirteen earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel it?

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: 91 km S of Semisopochnoi Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 179.473° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1284° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 54.32 km Depth of the event in kilometers.
Place 91km S 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 2016-04-11 12:16:54 Time when the event occurred. UTC/GMT
Updated 2016-04-23 08:31:09 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 246 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 2.23 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.76 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 227 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 us20005gy6 Id of event.
Event Code 20005gy6 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak13424637,us20005gy6, A comma-separated list of event ids that are associated to an event.

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