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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag strikes near Little Sitkin Island in Alaska



Earthquake location 52.0437S, 178.431WA light earthquake with magnitude 4.1 (ml/mb) was detected on Monday, 11 km NNW of Little Sitkin Island, Alaska (7 miles). All ids that are associated to the event: us20005c8t, ak13034778. Unique identifier: us20005c8t. Exact location of earthquake, longitude 178.431 East, latitude 52.0437 North, depth = 110.51 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 09:53:48 / 9:53 am (local time epicenter). The earthquake occurred at a depth of 110.51 km (69 miles). Global date and time of event UTC/GMT: 21/03/16 / 2016-03-21 18:53:48 / March 21, 2016 @ 6:53 pm.

Each year there are an estimated 13,000 light quakes in the world. In the past 24 hours, there have been eight, in the last 10 days twelve, in the past 30 days eighteen and in the last 365 days one hundred and twenty-two earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel the quake?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city 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: 11 km NNW of Little Sitkin Island, Alaska.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 178.431° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.0437° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 110.51 km Depth of the event in kilometers.
Place 11km NNW 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 2016-03-21 18:53:48 Time when the event occurred. UTC/GMT
Updated 2016-04-19 23:06:37 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 ,us,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 1.7 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.61 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 123 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 us20005c8t Id of event.
Event Code 20005c8t An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20005c8t,ak13034778, A comma-separated list of event ids that are associated to an event.

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