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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag was detected near Adak in Alaska


Earthquake location 50.8215S, -176.307WA light earthquake with magnitude 4.2 (ml/mb) was reported 119 km S of Adak, Alaska (74 miles) on Monday. Exact time and date of event in UTC/GMT: 11/05/20 / 2020-05-11 05:54:01 / May 11, 2020 @ 5:54 am. All ids that are associated to the event: ak02062e8kkx, us70009jpq. Unique identifier: us70009jpq. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 10 km, -176.307° West, 50.8215° North. The temblor was picked up at 05:54:01 / 5:54 am (local time epicenter).

Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been seventeen, in the last 10 days twenty-one, in the past 30 days thirty-three 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.

Questions or comments?

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. 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: 119 km S of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -176.307° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.8215° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 119 km S 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 2020-05-11 05:54:01 Time when the event occurred. UTC/GMT
Updated 2020-06-09 06:15:35 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 271 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 1.042 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.7 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 206 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 us70009jpq Id of event.
Event Code 70009jpq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak02062e8kkx,us70009jpq, A comma-separated list of event ids that are associated to an event.

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