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Light earthquake: M4 quake has struck near Adak in Alaska

Posted by admin on February 26, 2021 0 Comments

Earthquake location 50.7869S, -179.3796WA light earthquake magnitude 4 (ml/mb) has occurred on Friday, 226 km WSW of Adak, Alaska (140 miles). The 4-magnitude earthquake has occurred at 21:34:22 / 9:34 pm (local time epicenter). Exact location of event, depth 10 km, -179.3796° West, 50.7869° North. The earthquake occurred at a depth of 10 km (6 miles). Unique identifier: us6000dkrx. Ids that are associated to the event: us6000dkrx. Exact time and date of event in UTC/GMT: 19/02/21 / 2021-02-19 21:34:22 / February 19, 2021 @ 9:34 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Each year there are an estimated 13,000 light quakes in the world. In the past 24 hours, there have been eighteen, in the last 10 days twenty-one, in the past 30 days twenty-one and in the last 365 days one hundred and sixty-eight earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

How would you describe the shaking?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 226 km WSW of Adak, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -179.3796° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.7869° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 226 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 21:34:22 Time when the event occurred. UTC/GMT
Updated 2021-02-26 03:29:41 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 246 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 ,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 1.094 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.75 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 233 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 us6000dkrx Id of event.
Event Code 6000dkrx An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000dkrx, A comma-separated list of event ids that are associated to an event.

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