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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.9 mag has occurred near Adak in Alaska


Earthquake location 51.4563S, 179.795WA light earthquake with magnitude 4.9 (ml/mb) was detected on Saturday, 251 km WSW of Adak, Alaska (156 miles). The temblor was detected at 04:42:59 / 4:42 am (local time epicenter). The earthquake occurred at a depth of 58.285 km (36 miles) below the earth’s surface. Id of earthquake: us6000mu7g. Event ids that are associated: ak0245f81tcq, us6000mu7g. Exact location of earthquake, longitude 179.795 East, latitude 51.4563 North, depth = 58.285 km. Exact time and date of earthquake 27/04/24 / 2024-04-27 04:42:59 / April 27, 2024 @ 4:42 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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

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. 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: 251 km WSW of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 4.9 mb The magnitude for the event.
Longitude 179.795° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.4563° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 58.285 km Depth of the event in kilometers.
Place 251 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 2024-04-27 04:42:59 Time when the event occurred. UTC/GMT
Updated 2024-04-27 05:03:43 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 The maximum reported intensity for the event.
MMI 3.278 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 369 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 79 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.319 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.78 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 162 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 us6000mu7g Id of event.
Event Code 6000mu7g An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak0245f81tcq,us6000mu7g, A comma-separated list of event ids that are associated to an event.

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