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Minor earthquake, 3.3 mag strikes near Sand Point in Alaska

Posted by admin on December 17, 2020 0 Comments

Earthquake location 54.1833S, -159.8712WA minor earthquake with magnitude 3.3 (ml/mb) was reported 134 km SSE of Sand Point, Alaska (83 miles) on Saturday. The earthquake was roughly at a depth of 19.85 km (12 miles). Exact time and date of event in UTC/GMT: 21/11/20 / 2020-11-21 23:48:12 / November 21, 2020 @ 11:48 pm. Exact location of event, longitude -159.8712 West, latitude 54.1833 North, depth = 19.85 km. Unique identifier: us7000cq2c. Ids that are associated to the event: ak020ezj6f1m, us7000cq2c. The 3.3-magnitude earthquake has occurred at 23:48:12 / 11:48 pm (local time epicenter).

In the past 24 hours, there have been seventy, in the last 10 days one hundred and twenty-one, in the past 30 days four hundred and seventy-six and in the last 365 days one thousand, two hundred and eighty-one earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 130,000 minor quakes in the world each year. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

How would you describe the shaking?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 134 km SSE of Sand Point, Alaska.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude -159.8712° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.1833° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 19.85 km Depth of the event in kilometers.
Place 134 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 2020-11-21 23:48:12 Time when the event occurred. UTC/GMT
Updated 2020-12-17 06:29:22 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 168 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 ,ak,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 0.669 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.45 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 217 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 us7000cq2c Id of event.
Event Code 7000cq2c An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak020ezj6f1m,us7000cq2c, A comma-separated list of event ids that are associated to an event.

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