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Moderate earthquake, 5.1 mag has occurred near Atka in Alaska


Earthquake location 51.303S, -174.352WA moderate earthquake magnitude 5.1 (ml/mb) has struck on Friday, 99 km S of Atka, Alaska (62 miles). Global date and time of event UTC/GMT: 05/09/15 / 2015-09-05 07:00:03 / September 5, 2015 @ 7:00 am. A tsunami warning has been issued near Atka in Alaska (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: at00nu6zg3. Unique identifier: at00nu6zg3. Exact location, longitude -174.352° West, latitude 51.303° North, depth = 32 km. The 5.1-magnitude earthquake was detected at 19:00:03 / 7:00 pm (local time epicenter). The epicenter of the earthquake was roughly 32 km (20 miles) below the earth’s surface.

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

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 99 km S of Atka, Alaska.

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More information

Parameter Value Description
Magnitude 5.1 mb The magnitude for the event.
Longitude -174.352° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.303° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 32 km Depth of the event in kilometers.
Place 99km S of Atka, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-09-05 07:00:03 Time when the event occurred. UTC/GMT
Updated 2015-09-05 07:04:26 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 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 25 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.90460349 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 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 at00nu6zg3 Id of event.
Event Code 00nu6zg3 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00nu6zg3, A comma-separated list of event ids that are associated to an event.

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