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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.8 quake has struck near Sand Point in Alaska


Earthquake location 55.044S, -160.4358WA light earthquake magnitude 4.8 (ml/mb) has occurred on Saturday, 32 km S of Sand Point, Alaska (20 miles). Exact location of earthquake, -160.4358° West, 55.044° North, depth 49.51 km. Unique identifier: us1000bvf4. Ids that are associated to the event: us1000bvf4, ak17649369. Exact time and date of event in UTC/GMT: 23/12/17 / 2017-12-23 19:11:00 / December 23, 2017 @ 7:11 pm. The temblor was detected at 10:11:00 / 10:11 am (local time epicenter). The epicenter was at a depth of 49.51 km (31 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 32 km S of Sand Point, Alaska.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -160.4358° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.044° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 49.51 km Depth of the event in kilometers.
Place 32km S of Sand Point, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-23 19:11:00 Time when the event occurred. UTC/GMT
Updated 2017-12-23 19:32:16 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 3.57 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 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 354 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us,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 0.306 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.13 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 143 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us1000bvf4 Id of event.
Event Code 1000bvf4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000bvf4,ak17649369, A comma-separated list of event ids that are associated to an event.

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