Minor earthquake: M3.5 quake has struck near Unalaska in Alaska

A minor earthquake with magnitude 3.5 (ml/mb) was detected on Sunday, 91 km SSW of Unalaska, Alaska (57 miles). Exact location of earthquake, -166.8099° West, 53.0636° North, depth 35.03 km. The temblor was picked up at 01:22:19 / 1:22 am (local time epicenter). Exact time and date of earthquake 20/09/15 / 2015-09-20 12:22:19 / September 20, 2015 @ 12:22 pm UTC/GMT. The epicenter was at a depth of 35.03 km (22 miles). Unique identifier: us10003ijw. Ids that are associated to the event: ak11716076, us10003ijw.

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

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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 information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 91 km SSW of Unalaska, Alaska.

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Parameter	Value	Description
Magnitude	3.5 mb	The magnitude for the event.
Longitude	-166.8099° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	53.0636° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	35.03 km	Depth of the event in kilometers.
Place	91km SSW of Unalaska, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2015-09-20 12:22:19	Time when the event occurred. UTC/GMT
Updated	2015-10-09 06:07:06	Time when the event was most recently updated. UTC/GMT
Timezone offset	-660	Timezone offset from UTC in minutes at the event epicenter.
Felt	0	The total number of felt reports
CDI	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	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	188	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	0.732	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.12 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	206	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	us10003ijw	Id of event.
Event Code	10003ijw	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak11716076,us10003ijw,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.5 quake has struck near Unalaska in Alaska

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