Light earthquake, 4.6 mag strikes near Adak in Alaska

A light earthquake magnitude 4.6 (ml/mb) has struck on Friday, 54 km WSW of Adak, Alaska (34 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: us2000hij6. Unique identifier: us2000hij6. Global date and time of event UTC/GMT: 22/09/18 / 2018-09-22 03:11:55 / September 22, 2018 @ 3:11 am. Exact location of event, longitude -177.3382 West, latitude 51.6328 North, depth = 51.97 km. The temblor was detected at 17:11:55 / 5:11 pm (local time epicenter). The earthquake was roughly at a depth of 51.97 km (32 miles).

There are an estimated 13,000 light quakes in the world each year. 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 two, in the past 30 days twenty-two and in the last 365 days two hundred and one earthquakes of magnitude 3.0 or greater that has occurred nearby.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: 54 km WSW of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	4.6 mb	The magnitude for the event.
Longitude	-177.3382° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.6328° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	51.97 km	Depth of the event in kilometers.
Place	54km WSW of Adak, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2018-09-22 03:11:55	Time when the event occurred. UTC/GMT
Updated	2018-09-22 03:36:48	Time when the event was most recently updated. UTC/GMT
Timezone offset	-600	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	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	326	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	us	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,us,	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	0.248	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	121	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	mb	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	us2000hij6	Id of event.
Event Code	2000hij6	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us2000hij6,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.6 mag strikes near Adak in Alaska

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