Light earthquake, 4.8 mag strikes near Attu Station in Alaska

A light earthquake with magnitude 4.8 (ml/mb) was detected on Wednesday, 9 km WSW of Attu Station, Alaska (6 miles). Exact location, longitude 173.0554° East, latitude 52.8218° North, depth = 0 km. The 4.8-magnitude earthquake has occurred at 16:26:33 / 4:26 pm (local time epicenter). Id of earthquake: ak02548f4k89. Event ids that are associated: at00su3n0f, ak02548f4k89. A tsunami warning has been issued near Attu Station in Alaska (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 02/04/25 / 2025-04-02 16:26:33 / April 2, 2025 @ 4:26 pm. The epicenter of the earthquake was roughly 0 km (0 miles) below the earth’s surface.

Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days two and in the last 365 days twenty-one earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel the quake?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 9 km WSW of Attu Station, Alaska. This data comes from the USGS Earthquake Notification Service.

Alaska Attu Station

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Parameter	Value	Description
Magnitude	4.8 mb	The magnitude for the event.
Longitude	173.0554° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	52.8218° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	0 km	Depth of the event in kilometers.
Place	9 km WSW of Attu Station, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-04-02 16:26:33	Time when the event occurred. UTC/GMT
Updated	2025-04-02 16:42:55	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	5.609	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	354	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	ak	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		The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance		Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.59 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap		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	ak02548f4k89	Id of event.
Event Code	02548f4k89	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,at00su3n0f,ak02548f4k89,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.8 mag strikes near Attu Station in Alaska

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