Minor earthquake 3.1 mag, Gulf of Alaska

A minor earthquake with magnitude 3.1 (ml/mb) was reported Gulf of Alaska (0 miles) on Monday. Exact location, longitude -148.5788° West, latitude 56.3769° North, depth = 11.7 km. Date and time of earthquake in UTC/GMT: 30/04/18 / 2018-04-30 12:03:20 / April 30, 2018 @ 12:03 pm. The temblor was picked up at 12:03:20 / 12:03 pm (local time epicenter). Event id: ak19304229. Ids that are associated to the earthquake: ak19304229. The earthquake occurred at a depth of 11.7 km (7 miles) below the earth’s surface.

Every year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been eighteen, in the last 10 days sixty-one, in the past 30 days two hundred and fifty-nine and in the last 365 days three thousand, two hundred and seventy earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

Questions or comments?

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. 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: Gulf of Alaska.

Alaska

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Parameter	Value	Description
Magnitude	3.1 mb	The magnitude for the event.
Longitude	-148.5788° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	56.3769° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	11.7 km	Depth of the event in kilometers.
Place	Gulf of Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2018-04-30 12:03:20	Time when the event occurred. UTC/GMT
Updated	2018-05-03 02:58:50	Time when the event was most recently updated. UTC/GMT
Timezone offset		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	148	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	0.33 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	ak19304229	Id of event.
Event Code	19304229	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak19304229,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake 3.1 mag, Gulf of Alaska

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