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Moderate earthquake, 5.6 mag strikes near Nikolski in Alaska

Earthquake location 51.932S, -169.125WA moderate earthquake with magnitude 5.6 (ml/mb) was detected on Sunday, 113 km S of Nikolski, Alaska (70 miles). The earthquake was roughly at a depth of 35 km (22 miles). A tsunami warning has been issued near Nikolski in Alaska (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, -169.125° West, 51.932° North, depth 35 km. The temblor was detected at 20:40:30 / 8:40 pm (local time epicenter). Unique identifier: at00ns4yni. Ids that are associated to the event: at00ns4yni. Date and time of earthquake in UTC/GMT: 27/07/15 / 2015-07-27 07:40:30 / July 27, 2015 @ 7:40 am.

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been seventeen, in the last 10 days twenty, in the past 30 days twenty-four and in the last 365 days one hundred earthquakes of magnitude 3.0 or greater that has struck near. Each year there are an estimated 1320 moderate quakes in the world.

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. 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: 113 km S of Nikolski, Alaska.

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More information

Parameter Value Description
Magnitude 5.6 mb The magnitude for the event.
Longitude -169.125° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.932° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 113km S of Nikolski, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-07-27 07:40:30 Time when the event occurred. UTC/GMT
Updated 2015-07-27 07:46:50 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 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 482 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 58 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.30597533 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.43 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 208.8 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 at00ns4yni Id of event.
Event Code 00ns4yni An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00ns4yni, A comma-separated list of event ids that are associated to an event.

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