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

Earthquake location 51.7757S, 178.7291WA moderate earthquake with magnitude 5.1 (ml/mb) was reported 24 km SE of Little Sitkin Island, Alaska (15 miles) on Friday. Event ids that are associated to the earthquake: at00p4zges, us2000dbdx. Id of event: us2000dbdx. Global date and time of event UTC/GMT: 02/03/18 / 2018-03-02 21:44:53 / March 2, 2018 @ 9:44 pm. A tsunami warning has been issued near Little Sitkin Island in Alaska (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 97.97 km (61 miles) below the earth’s surface. The 5.1-magnitude earthquake has occurred at 11:44:53 / 11:44 am (local time epicenter). Exact location of earthquake, longitude 178.7291 East, latitude 51.7757 North, depth = 97.97 km.

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

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 24 km SE of Little Sitkin Island, Alaska.

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More information

Parameter Value Description
Magnitude 5.1 mb The magnitude for the event.
Longitude 178.7291° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.7757° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 97.97 km Depth of the event in kilometers.
Place 24km SE 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 21:44:53 Time when the event occurred. UTC/GMT
Updated 2018-03-02 22:08:10 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 us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.535 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 49 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 us2000dbdx Id of event.
Event Code 2000dbdx An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00p4zges,us2000dbdx, A comma-separated list of event ids that are associated to an event.

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