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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Little Sitkin Island in Alaska

Earthquake location 51.1163S, 178.9415WA light earthquake magnitude 4.1 (ml/mb) has struck on Thursday, 97 km SSE of Little Sitkin Island, Alaska (60 miles). Exact location of event, longitude 178.9415 East, latitude 51.1163 North, depth = 23.02 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 15/03/17 / 2017-03-15 22:26:16 / March 15, 2017 @ 10:26 pm. The 4.1-magnitude earthquake has occurred at 10:26:16 / 10:26 am (local time epicenter). Unique identifier: us20008slc. Ids that are associated to the event: ak15501485, us20008slc. The epicenter of the earthquake was roughly 23.02 km (14 miles) below the earth’s surface.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been eight, in the last 10 days twelve, in the past 30 days seventeen and in the last 365 days one hundred and fifty-three earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city 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: 97 km SSE of Little Sitkin Island, Alaska.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 178.9415° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1163° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 23.02 km Depth of the event in kilometers.
Place 97km 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 2017-03-15 22:26:16 Time when the event occurred. UTC/GMT
Updated 2017-04-05 04:05:01 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 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 259 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 ,ak,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 0.345 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.43 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 228 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 us20008slc Id of event.
Event Code 20008slc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak15501485,us20008slc, A comma-separated list of event ids that are associated to an event.

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