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Minor earthquake, 2.8 mag has occurred near Kaktovik in Alaska


Earthquake location 69.4945S, -144.7811WA minor earthquake with magnitude 2.8 (ml/mb) was reported 83 km SSW of Kaktovik, Alaska (52 miles) on Monday. The earthquake occurred at a depth of 35.2 km (22 miles). The 2.8-magnitude earthquake was detected at 18:42:22 / 6:42 pm (local time epicenter). Id of earthquake: ak20129230. Event ids that are associated: ak20129230. Exact location of earthquake, longitude -144.7811 West, latitude 69.4945 North, depth = 35.2 km. Exact time and date of event in UTC/GMT: 21/08/18 / 2018-08-21 03:42:22 / August 21, 2018 @ 3:42 am.

There are an estimated 1,300,000 minor quakes in the world each year. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been nine, in the last 10 days three hundred and fifty-seven, in the past 30 days three hundred and fifty-eight and in the last 365 days three hundred and sixty-two earthquakes of magnitude 3.0 or greater that was reported nearby.

How would you describe the shaking?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 83 km SSW of Kaktovik, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -144.7811° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 69.4945° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35.2 km Depth of the event in kilometers.
Place 83km SSW 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 2018-08-21 03:42:22 Time when the event occurred. UTC/GMT
Updated 2018-08-21 03:47:56 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 121 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 0.79 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 ak20129230 Id of event.
Event Code 20129230 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20129230, A comma-separated list of event ids that are associated to an event.

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