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Light earthquake, 4 mag was detected near Kaktovik in Alaska

Posted by admin on September 20, 2018 0 Comments

Earthquake location 69.5528S, -144.7269WA light earthquake magnitude 4 (ml/mb) strikes 77 km SW of Kaktovik, Alaska (48 miles) on Thursday. The earthquake was roughly at a depth of 0 km (0 miles). Exact time and date of event in UTC/GMT: 20/09/18 / 2018-09-20 09:28:00 / September 20, 2018 @ 9:28 am. The 4-magnitude earthquake has occurred at 00:28:00 / 12:28 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude -144.7269 West, latitude 69.5528 North, depth = 0 km. Event ids that are associated to the earthquake: ak20259185. Id of event: ak20259185.

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

Questions or comments?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 77 km SW 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 -144.7269° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 69.5528° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 0 km Depth of the event in kilometers.
Place 77km SW 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 2018-09-20 09:28:00 Time when the event occurred. UTC/GMT
Updated 2018-09-20 09:43:48 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 4.23 The maximum estimated instrumental intensity for the event.
Alert Level green 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 246 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 0.88 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 ak20259185 Id of event.
Event Code 20259185 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20259185, A comma-separated list of event ids that are associated to an event.

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