Moderate earthquake, 5 mag was detected near Adak in Alaska

A moderate earthquake magnitude 5 (ml/mb) has occurred on Monday, 269 km WSW of Adak, Alaska (167 miles). Id of earthquake: us6000qtzg. Event ids that are associated: us6000qtzg, ak0259adwvub. The temblor was picked up at 19:07:20 / 7:07 pm (local time epicenter). Global date and time of event UTC/GMT: 21/07/25 / 2025-07-21 19:07:20 / July 21, 2025 @ 7:07 pm. The epicenter of the earthquake was roughly 56.414 km (35 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 56.414 km, 179.5726° East, 51.3275° North.

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days five and in the last 365 days ninety-four earthquakes of magnitude 3.0 or greater that has struck near. Each year there are an estimated 1320 moderate quakes in the world. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

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How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 269 km WSW of Adak, Alaska. This information comes from the USGS Earthquake Notification Service.

Adak Alaska

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Parameter	Value	Description
Magnitude	5 mb	The magnitude for the event.
Longitude	179.5726° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.3275° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	56.414 km	Depth of the event in kilometers.
Place	269 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	2025-07-21 19:07:20	Time when the event occurred. UTC/GMT
Updated	2025-07-21 19:27:24	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	1.864	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	385	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,ak,	A comma-separated list of network contributors.
Number of Stations Used	86	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.177	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.76 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	138	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	us6000qtzg	Id of event.
Event Code	6000qtzg	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000qtzg,ak0259adwvub,	A comma-separated list of event ids that are associated to an event.

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Moderate earthquake, 5 mag was detected near Adak in Alaska

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