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Minor earthquake: M2.9 quake has struck near Kaktovik in Alaska


Earthquake location 69.3021S, -143.3241WA minor earthquake with magnitude 2.9 (ml/mb) was reported 93 km S of Kaktovik, Alaska (58 miles) on Monday. The epicenter was at a depth of 29.8 km (19 miles). The 2.9-magnitude earthquake was detected at 20:29:58 / 8:29 pm (local time epicenter). Exact location of event, depth 29.8 km, -143.3241° West, 69.3021° North. Unique identifier: ak20251121. Ids that are associated to the event: ak20251121. Exact time and date of earthquake 11/09/18 / 2018-09-11 05:29:58 / September 11, 2018 @ 5:29 am UTC/GMT.

In the past 24 hours, there have been five, in the last 10 days thirty-seven, in the past 30 days four hundred and eighty-five and in the last 365 days four hundred and eighty-nine earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. There are an estimated 130,000 minor quakes in the world each year.

Did you feel it?

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: 93 km S of Kaktovik, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.9 mb The magnitude for the event.
Longitude -143.3241° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 69.3021° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 29.8 km Depth of the event in kilometers.
Place 93km S of Kaktovik, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-09-11 05:29:58 Time when the event occurred. UTC/GMT
Updated 2018-09-11 07:25:00 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 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 automatic 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 129 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 1.02 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 ak20251121 Id of event.
Event Code 20251121 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20251121, A comma-separated list of event ids that are associated to an event.

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