Minor earthquake, 3.9 mag strikes near Chignik in Alaska

A minor earthquake magnitude 3.9 (ml/mb) strikes 81 km SE of Chignik, Alaska (50 miles) on Thursday. Id of earthquake: ak024c31ib0y. Event ids that are associated: ak024c31ib0y. Exact time and date of event in UTC/GMT: 19/09/24 / 2024-09-19 05:32:02 / September 19, 2024 @ 5:32 am. The 3.9-magnitude earthquake has occurred at 05:32:02 / 5:32 am (local time epicenter). The earthquake occurred at a depth of 6.2 km (4 miles) below the earth’s surface. Exact location, longitude -157.4931° West, latitude 55.7731° North, depth = 6.2 km.

There are an estimated 130,000 minor quakes in the world each year. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days four and in the last 365 days eighteen earthquakes of magnitude 3.0 or greater that have been detected nearby.

Questions or comments?

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 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: 81 km SE of Chignik, Alaska.

Alaska Chignik

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Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	-157.4931° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	55.7731° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	6.2 km	Depth of the event in kilometers.
Place	81 km SE of Chignik, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2024-09-19 05:32:02	Time when the event occurred. UTC/GMT
Updated	2024-09-19 05:34:13	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	automatic	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	234	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,	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	0.4 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	ak024c31ib0y	Id of event.
Event Code	024c31ib0y	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak024c31ib0y,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.9 mag strikes near Chignik in Alaska

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