Light earthquake, 4 mag strikes near Adak in Alaska

A light earthquake magnitude 4 (ml/mb) strikes 45 km SE of Adak, Alaska (28 miles) on Saturday. The epicenter of the earthquake was roughly 47.34 km (29 miles) below the earth’s surface. The temblor was detected at 01:00:49 / 1:00 am (local time epicenter). Exact location of earthquake, -176.1527° West, 51.6237° North, depth 47.34 km. Event id: us2000c2e2. Ids that are associated to the earthquake: ak17552423, us2000c2e2. Exact time and date of event in UTC/GMT: 09/12/17 / 2017-12-09 11:00:49 / December 9, 2017 @ 11:00 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been five, in the last 10 days eleven, in the past 30 days fifteen and in the last 365 days one hundred and ninety-two earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

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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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 45 km SE of Adak, Alaska. This data comes from the USGS Earthquake Notification Service.

Adak Alaska

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	-176.1527° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.6237° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	47.34 km	Depth of the event in kilometers.
Place	45km SE 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	2017-12-09 11:00:49	Time when the event occurred. UTC/GMT
Updated	2017-12-18 08:09:54	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	2.51	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	0.387	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.95 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	196	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	us2000c2e2	Id of event.
Event Code	2000c2e2	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak17552423,us2000c2e2,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4 mag strikes near Adak in Alaska

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