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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Unalaska in Alaska


Earthquake location 52.8264S, -166.7198WA light earthquake with magnitude 4.1 (ml/mb) was reported 117 km S of Unalaska, Alaska (73 miles) on Monday. The epicenter was at a depth of 35 km (22 miles). Event id: us6000nzzq. Ids that are associated to the earthquake: ak024djxckmb, us6000nzzq. The 4.1-magnitude earthquake was detected at 03:04:17 / 3:04 am (local time epicenter). Exact location of event, depth 35 km, -166.7198° West, 52.8264° North. Exact time and date of earthquake 21/10/24 / 2024-10-21 03:04:17 / October 21, 2024 @ 3:04 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days seventeen and in the last 365 days thirty-four earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

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 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: 117 km S of Unalaska, Alaska.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -166.7198° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.8264° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 117 km S of Unalaska, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2024-10-21 03:04:17 Time when the event occurred. UTC/GMT
Updated 2024-10-21 21:52:48 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 1.454 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 70 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.927 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.84 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 171 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 us6000nzzq Id of event.
Event Code 6000nzzq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak024djxckmb,us6000nzzq, A comma-separated list of event ids that are associated to an event.

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