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Light earthquake: M4.5 quake has struck near Adak in Alaska

Posted by admin on July 11, 2025 0 Comments

Earthquake location 51.5738S, -176.6715WA light earthquake magnitude 4.5 (ml/mb) has occurred on Friday, 33 km S of Adak, Alaska (21 miles). Id of earthquake: us7000qc0e. Event ids that are associated: us7000qc0e. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude -176.6715° West, latitude 51.5738° North, depth = 52.981 km. The temblor was detected at 11:32:17 / 11:32 am (local time epicenter). The earthquake was roughly at a depth of 52.981 km (33 miles). Exact time and date of event in UTC/GMT: 11/07/25 / 2025-07-11 11:32:17 / July 11, 2025 @ 11:32 am.

In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days nine and in the last 365 days five hundred and fourty-seven earthquakes of magnitude 3.0 or greater that have been detected nearby. Each year there are an estimated 13,000 light quakes in the world. 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: 33 km S of Adak, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -176.6715° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.5738° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 52.981 km Depth of the event in kilometers.
Place 33 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 2025-07-11 11:32:17 Time when the event occurred. UTC/GMT
Updated 2025-07-11 11:51:16 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 312 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 90 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.409 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.95 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 146 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 us7000qc0e Id of event.
Event Code 7000qc0e An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qc0e, A comma-separated list of event ids that are associated to an event.

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