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Light earthquake, 4 mag was detected near Kaktovik in Alaska


Earthquake location 69.568S, -144.439WA light earthquake magnitude 4 (ml/mb) has struck on Monday, 70 km SSW of Kaktovik, Alaska (43 miles). Exact location of event, longitude -144.439 West, latitude 69.568 North, depth = 20 km. The epicenter of the earthquake was roughly 20 km (12 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 10/09/18 / 2018-09-10 23:37:12 / September 10, 2018 @ 11:37 pm. All ids that are associated to the event: at00pev5m0. Unique identifier: at00pev5m0. The temblor was reported at 14:37:12 / 2:37 pm (local time epicenter). A tsunami warning has been issued near Kaktovik in Alaska (Does not indicate if a tsunami actually did or will exist).

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

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 70 km SSW of Kaktovik, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -144.439° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 69.568° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20 km Depth of the event in kilometers.
Place 70km 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 2018-09-10 23:37:12 Time when the event occurred. UTC/GMT
Updated 2018-09-10 23:40:56 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 REVIEWED Indicates whether the event has been reviewed by a human.
Tsunami 1 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 246 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at, A comma-separated list of network contributors.
Number of Stations Used 31 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.060735 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.6 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 118.799990496 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 at00pev5m0 Id of event.
Event Code 00pev5m0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00pev5m0, A comma-separated list of event ids that are associated to an event.

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