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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.3 mag, 142 km SW of Chirikof Island, Alaska


Earthquake location 54.7681S, -156.8793WA light earthquake magnitude 4.3 (ml/mb) has occurred on Thursday, 142 km SW of Chirikof Island, Alaska (88 miles). Exact time and date of earthquake 15/12/17 / 2017-12-15 08:38:49 / December 15, 2017 @ 8:38 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 0 km (0 miles) below the earth’s surface. Exact location of earthquake, longitude -156.8793 West, latitude 54.7681 North, depth = 0 km. Event id: ak17600285. Ids that are associated to the earthquake: ak17600285. The temblor was detected at 22:38:49 / 10:38 pm (local time epicenter).

In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days nine and in the last 365 days thirty earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 13,000 light quakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: 142 km SW of Chirikof Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -156.8793° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.7681° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 0 km Depth of the event in kilometers.
Place 142km SW of Chirikof Island, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-15 08:38:49 Time when the event occurred. UTC/GMT
Updated 2017-12-15 08:49:30 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 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 284 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 0.85 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 ak17600285 Id of event.
Event Code 17600285 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak17600285, A comma-separated list of event ids that are associated to an event.

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