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Moderate earthquake: M5.3 quake has struck near Little Sitkin Island in Alaska



Earthquake location 50.815S, 178.636WA moderate earthquake magnitude 5.3 (ml/mb) has struck on Friday, 126 km S of Little Sitkin Island, Alaska (78 miles). Global time and date of event 27/04/17 / 2017-04-27 14:46:34 / April 27, 2017 @ 2:46 pm UTC/GMT. Id of earthquake: at00op2p1m. Event ids that are associated: at00op2p1m. The temblor was detected at 02:46:34 / 2:46 am (local time epicenter). Exact location, longitude 178.636° East, latitude 50.815° North, depth = 51 km. A tsunami warning has been issued near Little Sitkin Island in Alaska (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 51 km (32 miles) below the earth’s surface.

There are an estimated 1320 moderate quakes in the world each year. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days four and in the last 365 days one hundred and nine earthquakes of magnitude 3.0 or greater that has occurred nearby.

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 126 km S of Little Sitkin Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 5.3 mb The magnitude for the event.
Longitude 178.636° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.815° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 51 km Depth of the event in kilometers.
Place 126km 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 2017-04-27 14:46:34 Time when the event occurred. UTC/GMT
Updated 2017-04-27 14:52:51 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 1 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 432 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at, A comma-separated list of network contributors.
Number of Stations Used 33 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.90353 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.01 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 233.99998128 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type Mi The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID at00op2p1m Id of event.
Event Code 00op2p1m An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00op2p1m, A comma-separated list of event ids that are associated to an event.

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