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Minor earthquake, 3.3 mag strikes near Little Sitkin Island in Alaska

Earthquake location 51.5711S, 178.9068WA minor earthquake with magnitude 3.3 (ml/mb) was reported 50 km SSE of Little Sitkin Island, Alaska (31 miles) on Thursday. The 3.3-magnitude earthquake has occurred at 23:46:39 / 11:46 pm (local time epicenter). The earthquake occurred at a depth of 66.9 km (42 miles). Exact time and date of earthquake 30/03/18 / 2018-03-30 09:46:39 / March 30, 2018 @ 9:46 am UTC/GMT. All ids that are associated to the event: ak18836784. Unique identifier: ak18836784. Exact location of earthquake, longitude 178.9068 East, latitude 51.5711 North, depth = 66.9 km.

In the past 24 hours, there have been one, in the last 10 days three, 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 was reported nearby. Every year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

How would you describe the shaking?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 50 km SSE of Little Sitkin Island, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude 178.9068° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.5711° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 66.9 km Depth of the event in kilometers.
Place 50km SSE 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 2018-03-30 09:46:39 Time when the event occurred. UTC/GMT
Updated 2018-04-06 00:16:05 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 0 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 168 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak, 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.45 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ak18836784 Id of event.
Event Code 18836784 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18836784, A comma-separated list of event ids that are associated to an event.

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