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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.28 mag has occurred near Amatignak Island in Alaska

Earthquake location 50.3141667S, -178.6163333WA light earthquake magnitude 4.28 (ml/mb) has struck on Thursday, 111 km SSE of Amatignak Island, Alaska (69 miles). Id of earthquake: av62128051. Event ids that are associated: av62128051. The temblor was reported at 01:47:43 / 1:47 am (local time epicenter). Global time and date of event 23/01/20 / 2020-01-23 13:47:43 / January 23, 2020 @ 1:47 pm UTC/GMT. The epicenter was at a depth of 6.98 km (4 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 6.98 km, -178.6163333° West, 50.3141667° North.

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

Questions or comments?

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: 111 km SSE of Amatignak Island, Alaska.

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More information

Parameter Value Description
Magnitude 4.28 mb The magnitude for the event.
Longitude -178.6163333° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.3141667° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 6.98 km Depth of the event in kilometers.
Place 111km SSE of Amatignak 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 2020-01-23 13:47:43 Time when the event occurred. UTC/GMT
Updated 2020-02-21 21:52:37 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 282 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network av The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,av, A comma-separated list of network contributors.
Number of Stations Used 20 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.247 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 17.05 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 303 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 av62128051 Id of event.
Event Code 62128051 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,av62128051, A comma-separated list of event ids that are associated to an event.

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