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Moderate earthquake: M5.3 quake has struck near Adak in Alaska


Earthquake location 51.273S, -178.592WA moderate earthquake with magnitude 5.3 (ml/mb) was reported 151 km WSW of Adak, Alaska (94 miles) on Saturday. The earthquake occurred at a depth of 38 km (24 miles) below the earth’s surface. Exact location of event, depth 38 km, -178.592° West, 51.273° North. A tsunami warning has been issued near Adak in Alaska (Does not indicate if a tsunami actually did or will exist). Event id: at00sk6avk. Ids that are associated to the earthquake: at00sk6avk, ak024c6jnves. Global time and date of event 21/09/24 / 2024-09-21 17:21:20 / September 21, 2024 @ 5:21 pm UTC/GMT. The 5.3-magnitude earthquake has occurred at 17:21:20 / 5:21 pm (local time epicenter).

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been one, in the last 10 days four, in the past 30 days five and in the last 365 days fourty-eight earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 1320 moderate earthquakes in the world each year.

Did you feel the quake?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 151 km WSW of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 5.3 mb The magnitude for the event.
Longitude -178.592° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.273° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 38 km Depth of the event in kilometers.
Place 151 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 2024-09-21 17:21:20 Time when the event occurred. UTC/GMT
Updated 2024-09-21 17:30:17 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 2.7 The maximum reported intensity for the event.
MMI 3.805 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 1 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 432 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at,ak, A comma-separated list of network contributors.
Number of Stations Used 28 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.5569555 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.15 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 205.199983584 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type Ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID at00sk6avk Id of event.
Event Code 00sk6avk An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00sk6avk,ak024c6jnves, A comma-separated list of event ids that are associated to an event.

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