Minor earthquake, 3.9 mag strikes near Ninilchik in Alaska

A minor earthquake with magnitude 3.9 (ml/mb) was reported 24 kilometers (15 miles) from Ninilchik in Alaska on Saturday. The epicenter of the earthquake was roughly 79 km (49 miles) below the earth’s surface. Global date and time of event UTC/GMT: 19/04/25 / 2025-04-19 13:01:26 / April 19, 2025 @ 1:01 pm. Exact location of earthquake, -151.9271° West, 60.223° North, depth 79 km. All ids that are associated to the event: ak02550hbqgs, at00suyuue. Unique identifier: ak02550hbqgs. The 3.9-magnitude earthquake has occurred at 13:01:26 / 1:01 pm (local time epicenter).

Event epicenter was 41 km (26 miles) from Kalifornsky (c. 7 900 pop), 52 km (32 miles) from Kenai (c. 7 100 pop), 73 km (45 miles) from Sterling (c. 5 600 pop), 68 km (42 miles) from Homer (c. 5 000 pop). Close country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Sterling, Homer, Kenai (min 5000 pop).

Each year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days four, in the past 30 days five and in the last 365 days sixty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 24 km NW of Ninilchik, Alaska.

Alaska Homer Kalifornsky Kenai Ninilchik Sterling United States

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Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	-151.9271° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	60.223° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	79 km	Depth of the event in kilometers.
Place	24 km NW of Ninilchik, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-04-19 13:01:26	Time when the event occurred. UTC/GMT
Updated	2025-04-19 13:05:30	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt	5	The total number of felt reports
CDI	3.1	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	automatic	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	236	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	,ak,at,	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	0.38 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	ak02550hbqgs	Id of event.
Event Code	02550hbqgs	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak02550hbqgs,at00suyuue,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.9 mag strikes near Ninilchik in Alaska

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