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Moderate earthquake, 5.1 mag strikes near Little Sitkin Island in Alaska

Earthquake location 51.428S, 178.572WA moderate earthquake with magnitude 5.1 (ml/mb) was reported 58 km S of Little Sitkin Island, Alaska (36 miles) on Friday. Id of earthquake: at00p4zges. Event ids that are associated: at00p4zges. Global date and time of event UTC/GMT: 02/03/18 / 2018-03-02 21:44:52 / March 2, 2018 @ 9:44 pm. Exact location of event, depth 117 km, 178.572° East, 51.428° North. The 5.1-magnitude earthquake was detected at 11:44:52 / 11:44 am (local time epicenter). 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 was roughly at a depth of 117 km (73 miles).

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 ten and in the last 365 days one hundred and fifty-one earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 1320 moderate quakes in the world each year.

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: 58 km S of Little Sitkin Island, Alaska.

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More information

Parameter Value Description
Magnitude 5.1 mb The magnitude for the event.
Longitude 178.572° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.428° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 117 km Depth of the event in kilometers.
Place 58km 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 2018-03-02 21:44:52 Time when the event occurred. UTC/GMT
Updated 2018-03-02 21:51:21 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 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 22 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4581408 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.74 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 305.99997552 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 at00p4zges Id of event.
Event Code 00p4zges An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00p4zges, A comma-separated list of event ids that are associated to an event.

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