Light earthquake, 4.6 mag strikes near Chiniak in Alaska

A light earthquake magnitude 4.6 (ml/mb) has occurred on Sunday, 190 km ENE of Chiniak, Alaska (118 miles). A tsunami warning has been issued near Chiniak in Alaska (Does not indicate if a tsunami actually did or will exist). Id of earthquake: at00swgbkw. Event ids that are associated: at00swgbkw. Exact location of event, longitude -149.228 West, latitude 58.13 North, depth = 22 km. The epicenter was at a depth of 22 km (14 miles). Date and time of earthquake in UTC/GMT: 18/05/25 / 2025-05-18 09:55:44 / May 18, 2025 @ 9:55 am. The temblor was picked up at 09:55:44 / 9:55 am (local time epicenter).

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

How would you describe the shaking?

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. 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: 190 km ENE of Chiniak, Alaska.

Alaska Chiniak

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Parameter	Value	Description
Magnitude	4.6 mb	The magnitude for the event.
Longitude	-149.228° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	58.13° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	22 km	Depth of the event in kilometers.
Place	190 km ENE of Chiniak, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-05-18 09:55:44	Time when the event occurred. UTC/GMT
Updated	2025-05-18 10:00:24	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		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	326	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,	A comma-separated list of network contributors.
Number of Stations Used	48	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.819987	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.53 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	154.799987616	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	at00swgbkw	Id of event.
Event Code	00swgbkw	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,at00swgbkw,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.6 mag strikes near Chiniak in Alaska

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