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Minor earthquake 3.3 mag, 41 km SSE of King Salmon, Alaska

Earthquake location 58.3519S, -156.356WA minor earthquake with magnitude 3.3 (ml/mb) was detected on Monday, 41 km SSE of King Salmon, Alaska (25 miles). Date and time of earthquake in UTC/GMT: 18/01/21 / 2021-01-18 21:43:19 / January 18, 2021 @ 9:43 pm. Event id: ak021u4flzn. Ids that are associated to the earthquake: ak021u4flzn. Exact location of earthquake, longitude -156.356 West, latitude 58.3519 North, depth = 180 km. The earthquake was roughly at a depth of 180 km (112 miles). The temblor was reported at 21:43:19 / 9:43 pm (local time epicenter).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days ten earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

Did you feel the quake?

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: 41 km SSE of King Salmon, Alaska.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude -156.356° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 58.3519° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 180 km Depth of the event in kilometers.
Place 41 km SSE of King Salmon, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-01-18 21:43:19 Time when the event occurred. UTC/GMT
Updated 2021-01-18 21:52:37 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 automatic 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 0.87 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 ak021u4flzn Id of event.
Event Code 021u4flzn An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak021u4flzn, A comma-separated list of event ids that are associated to an event.

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