Light earthquake, 4.1 mag was detected near Sitka in Alaska

A light earthquake with magnitude 4.1 (ml/mb) was detected on Thursday, 165 km W of Sitka, Alaska (103 miles). Event ids that are associated to the earthquake: ak19859671. Id of event: ak19859671. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 12/07/18 / 2018-07-12 18:07:12 / July 12, 2018 @ 6:07 pm. The 4.1-magnitude earthquake has occurred at 09:07:12 / 9:07 am (local time epicenter). Exact location of earthquake, longitude -138.034 West, latitude 57.2701 North, depth = 0.1 km. The epicenter of the earthquake was roughly 0.1 km (0 miles) below the earth’s surface.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. 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 eight earthquakes of magnitude 3.0 or greater that have been detected nearby. Each year there are an estimated 13,000 light quakes in the world.

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 165 km W of Sitka, Alaska. This information comes from the USGS Earthquake Notification Service.

Alaska Sitka

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Parameter	Value	Description
Magnitude	4.1 mb	The magnitude for the event.
Longitude	-138.034° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	57.2701° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	0.1 km	Depth of the event in kilometers.
Place	165km W of Sitka, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2018-07-12 18:07:12	Time when the event occurred. UTC/GMT
Updated	2018-07-12 18:12:54	Time when the event was most recently updated. UTC/GMT
Timezone offset	-540	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	259	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	0.92 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	ak19859671	Id of event.
Event Code	19859671	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak19859671,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.1 mag was detected near Sitka in Alaska

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