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Minor earthquake: M3.3 quake has struck near Sand Point in Alaska

Earthquake location 54.5033S, -159.6029WA minor earthquake magnitude 3.3 (ml/mb) has occurred on Tuesday, 109 km SSE of Sand Point, Alaska (68 miles). Exact time and date of event in UTC/GMT: 20/10/20 / 2020-10-20 00:50:41 / October 20, 2020 @ 12:50 am. Exact location of earthquake, longitude -159.6029 West, latitude 54.5033 North, depth = 14.5 km. Unique identifier: ak020di8aue7. Ids that are associated to the event: ak020di8aue7. The earthquake was roughly at a depth of 14.5 km (9 miles). The 3.3-magnitude earthquake was detected at 00:50:41 / 12:50 am (local time epicenter).

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. In the past 24 hours, there have been three hundred and eighty-seven, in the last 10 days three hundred and eighty-seven, in the past 30 days four hundred and six and in the last 365 days seven hundred and twelve earthquakes of magnitude 3.0 or greater that have been detected in the same area.

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 109 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 -159.6029° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.5033° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 14.5 km Depth of the event in kilometers.
Place 109 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 2020-10-20 00:50:41 Time when the event occurred. UTC/GMT
Updated 2020-10-30 18:32:08 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 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 0.76 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 ak020di8aue7 Id of event.
Event Code 020di8aue7 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak020di8aue7, A comma-separated list of event ids that are associated to an event.

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