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Light earthquake, 4 mag strikes near Sand Point in Alaska

Posted by admin on October 25, 2020 0 Comments

Earthquake location 54.3506S, -159.504WA light earthquake with magnitude 4 (ml/mb) was detected on Sunday, 127 km SSE of Sand Point, Alaska (79 miles). The earthquake occurred at a depth of 31.45 km (20 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 25/10/20 / 2020-10-25 22:46:04 / October 25, 2020 @ 10:46 pm. All ids that are associated to the event: us6000cd3y. Unique identifier: us6000cd3y. The 4-magnitude earthquake has occurred at 22:46:04 / 10:46 pm (local time epicenter). Exact location, longitude -159.504° West, latitude 54.3506° North, depth = 31.45 km.

In the past 24 hours, there have been nine, in the last 10 days one hundred and eighty-two, in the past 30 days one hundred and ninety-four and in the last 365 days four hundred and seventy-eight earthquakes of magnitude 3.0 or greater that has occurred nearby. Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

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. 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: 127 km SSE of Sand Point, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -159.504° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.3506° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 31.45 km Depth of the event in kilometers.
Place 127 km SSE 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 2020-10-25 22:46:04 Time when the event occurred. UTC/GMT
Updated 2020-10-25 23:32:06 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 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 us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, 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 0.484 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.73 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 209 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 us6000cd3y Id of event.
Event Code 6000cd3y An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000cd3y, A comma-separated list of event ids that are associated to an event.

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