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Light earthquake 4.7 mag, 114 km SSE of Sand Point, Alaska

Posted by admin on October 21, 2020 0 Comments

Earthquake location 54.4427S, -159.6231WA light earthquake magnitude 4.7 (ml/mb) has occurred on Wednesday, 114 km SSE of Sand Point, Alaska (71 miles). Global date and time of event UTC/GMT: 21/10/20 / 2020-10-21 11:56:41 / October 21, 2020 @ 11:56 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.7-magnitude earthquake has occurred at 11:56:41 / 11:56 am (local time epicenter). The earthquake occurred at a depth of 18.82 km (12 miles) below the earth’s surface. Exact location of event, longitude -159.6231 West, latitude 54.4427 North, depth = 18.82 km. Event id: us6000call. Ids that are associated to the earthquake: us6000call.

In the past 24 hours, there have been twenty-seven, in the last 10 days ninety-seven, in the past 30 days one hundred and twelve and in the last 365 days four hundred and fifteen earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes 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. 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: 114 km SSE of Sand Point, Alaska.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude -159.6231° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.4427° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 18.82 km Depth of the event in kilometers.
Place 114 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 2020-10-21 11:56:41 Time when the event occurred. UTC/GMT
Updated 2020-10-21 12:09:30 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 340 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 0.389 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.07 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 160 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mww The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000call Id of event.
Event Code 6000call An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000call, A comma-separated list of event ids that are associated to an event.

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