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Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.9 mag was detected near Adak in Alaska

Earthquake location 51.1525S, -178.9988WA minor earthquake magnitude 3.9 (ml/mb) has occurred on Friday, 182 km WSW of Adak, Alaska (113 miles). All ids that are associated to the event: ak0212b2kzb3, us6000djjf. Unique identifier: us6000djjf. The epicenter of the earthquake was roughly 35.84 km (22 miles) below the earth’s surface. The temblor was picked up at 23:03:03 / 11:03 pm (local time epicenter). Exact location, longitude -178.9988° West, latitude 51.1525° North, depth = 35.84 km. Date and time of earthquake in UTC/GMT: 19/02/21 / 2021-02-19 23:03:03 / February 19, 2021 @ 11:03 pm.

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

Did you feel it?

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: 182 km WSW of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 3.9 mb The magnitude for the event.
Longitude -178.9988° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1525° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35.84 km Depth of the event in kilometers.
Place 182 km WSW of Adak, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-02-19 23:03:03 Time when the event occurred. UTC/GMT
Updated 2021-02-26 01:40:56 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 234 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 0.417 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.85 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 211 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000djjf Id of event.
Event Code 6000djjf An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak0212b2kzb3,us6000djjf, A comma-separated list of event ids that are associated to an event.

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