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Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.5 quake has struck near Saint George in Alaska

Earthquake location 56.6353S, -169.964WA minor earthquake magnitude 3.5 (ml/mb) strikes 25 km W of Saint George, Alaska (16 miles) on Wednesday. The earthquake was roughly at a depth of 20.6 km (13 miles). The 3.5-magnitude earthquake was detected at 20:36:51 / 8:36 pm (local time epicenter). Exact time and date of earthquake 17/02/21 / 2021-02-17 20:36:51 / February 17, 2021 @ 8:36 pm UTC/GMT. Event id: us6000diiq. Ids that are associated to the earthquake: ak02127pxbj0, us6000diiq. Exact location of event, longitude -169.964 West, latitude 56.6353 North, depth = 20.6 km.

Each year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days two and in the last 365 days two earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Questions or comments?

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. 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: 25 km W of Saint George, Alaska.

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More information

Parameter Value Description
Magnitude 3.5 mb The magnitude for the event.
Longitude -169.964° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.6353° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.6 km Depth of the event in kilometers.
Place 25 km W of Saint George, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-02-17 20:36:51 Time when the event occurred. UTC/GMT
Updated 2021-02-26 18:09:57 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 3.3 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 189 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 0.564 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.51 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 119 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 us6000diiq Id of event.
Event Code 6000diiq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak02127pxbj0,us6000diiq, A comma-separated list of event ids that are associated to an event.

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