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Moderate earthquake 5.1 mag, 114 km SSW of Nikolski, Alaska


Earthquake location 51.953S, -169.335WA moderate earthquake magnitude 5.1 (ml/mb) has occurred on Wednesday, 114 km SSW of Nikolski, Alaska (71 miles). All ids that are associated to the event: at00ns9bcb. Unique identifier: at00ns9bcb. The epicenter was at a depth of 22 km (14 miles). Date and time of earthquake in UTC/GMT: 29/07/15 / 2015-07-29 16:04:59 / July 29, 2015 @ 4:04 pm. Exact location of event, longitude -169.335 West, latitude 51.953 North, depth = 22 km. The 5.1-magnitude earthquake was detected at 05:04:59 / 5:04 am (local time epicenter). A tsunami warning has been issued near Nikolski in Alaska (Does not indicate if a tsunami actually did or will exist).

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

How would you describe the shaking?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: 114 km SSW of Nikolski, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 5.1 mb The magnitude for the event.
Longitude -169.335° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.953° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 22 km Depth of the event in kilometers.
Place 114km SSW 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 2015-07-29 16:04:59 Time when the event occurred. UTC/GMT
Updated 2015-07-29 16:09:41 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 400 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 19 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.06180867 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.78 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 212.4 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 at00ns9bcb Id of event.
Event Code 00ns9bcb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00ns9bcb, A comma-separated list of event ids that are associated to an event.

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