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Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.5 quake has struck near Semisopochnoi Island in Alaska

Posted by admin on January 21, 2020 0 Comments

Earthquake location 51.6934S, -179.8483WA minor earthquake magnitude 3.5 (ml/mb) strikes 47 km SE of Semisopochnoi Island, Alaska (29 miles) on Sunday. Exact location of event, longitude -179.8483 West, latitude 51.6934 North, depth = 106.94 km. The epicenter of the earthquake was roughly 106.94 km (66 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 22/12/19 / 2019-12-22 21:57:50 / December 22, 2019 @ 9:57 pm. Unique identifier: us70006pz1. Ids that are associated to the event: ak019gd45z8p, us70006pz1. The temblor was reported at 09:57:50 / 9:57 am (local time epicenter).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Every year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been nine, in the last 10 days nine, in the past 30 days thirty-one and in the last 365 days one hundred and five earthquakes of magnitude 3.0 or greater that has occurred nearby.

Questions or comments?

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. 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: 47 km SE of Semisopochnoi Island, Alaska.

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More information

Parameter Value Description
Magnitude 3.5 mb The magnitude for the event.
Longitude -179.8483° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.6934° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 106.94 km Depth of the event in kilometers.
Place 47km SE of Semisopochnoi Island, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-12-22 21:57:50 Time when the event occurred. UTC/GMT
Updated 2020-01-21 03:27:13 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 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 188 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 0.402 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.28 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 138 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 us70006pz1 Id of event.
Event Code 70006pz1 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak019gd45z8p,us70006pz1, A comma-separated list of event ids that are associated to an event.

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