Light earthquake: M4 quake has struck near Chirik

A light earthquake magnitude 4 (ml/mb) has struck on Friday, 153 km SW of Chirikof Island, Alaska (95 miles). The epicenter was at a depth of 10 km (6 miles). Event id: us1000aqk6. Ids that are associated to the earthquake: ak16990900, us1000aqk6. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude -156.9504 West, latitude 54.6693 North, depth = 10 km. Exact time and date of earthquake 06/10/17 / 2017-10-06 18:05:20 / October 6, 2017 @ 6:05 pm UTC/GMT. The temblor was reported at 08:05:20 / 8:05 am (local time epicenter).

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

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Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 153 km SW of Chirikof Island, Alaska.

Chirik

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	-156.9504° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	54.6693° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	153km SW of Chirikof Island, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2017-10-06 18:05:20	Time when the event occurred. UTC/GMT
Updated	2017-11-03 17:37:44	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	246	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	,ak,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	1.383	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.05 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	194	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	us1000aqk6	Id of event.
Event Code	1000aqk6	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak16990900,us1000aqk6,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4 quake has struck near Chirik

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