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Light earthquake: M4.8 quake has struck near Akutan in Alaska

Posted by admin on October 21, 2020 0 Comments

Earthquake location 52.9819S, -164.6548WA light earthquake with magnitude 4.8 (ml/mb) was detected on Wednesday, 148 km SSE of Akutan, Alaska (92 miles). Exact location of earthquake, longitude -164.6548 West, latitude 52.9819 North, depth = 42.04 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.8-magnitude earthquake has occurred at 03:35:25 / 3:35 am (local time epicenter). Exact time and date of earthquake 21/10/20 / 2020-10-21 03:35:25 / October 21, 2020 @ 3:35 am UTC/GMT. The earthquake occurred at a depth of 42.04 km (26 miles) below the earth’s surface. Unique identifier: us6000cahd. Ids that are associated to the event: us6000cahd.

There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days six and in the last 365 days one hundred and ten earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 148 km SSE of Akutan, Alaska.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -164.6548° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.9819° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 42.04 km Depth of the event in kilometers.
Place 148 km SSE of Akutan, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-10-21 03:35:25 Time when the event occurred. UTC/GMT
Updated 2020-10-21 03:50:46 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 3.8 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 355 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 1.333 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.81 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 170 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000cahd Id of event.
Event Code 6000cahd An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000cahd, A comma-separated list of event ids that are associated to an event.

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