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Minor earthquake 3 mag, 277 km SE of Kodiak, Alaska



Earthquake location 56.0185S, -149.2123WA minor earthquake magnitude 3 (ml/mb) has struck on Thursday, 277 km SE of Kodiak, Alaska (172 miles). The temblor was detected at 07:50:45 / 7:50 am (local time epicenter). Exact location of earthquake, -149.2123° West, 56.0185° North, depth 12 km. Id of earthquake: ak19173864. Event ids that are associated: ak19173864. Date and time of earthquake in UTC/GMT: 05/04/18 / 2018-04-05 17:50:45 / April 5, 2018 @ 5:50 pm. The earthquake occurred at a depth of 12 km (7 miles).

Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. In the past 24 hours, there have been fifteen, in the last 10 days ninety-nine, in the past 30 days four hundred and three and in the last 365 days three thousand and eighty earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 130,000 minor quakes in the world each year.

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 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: 277 km SE of Kodiak, Alaska.

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More information

Parameter Value Description
Magnitude 3 mb The magnitude for the event.
Longitude -149.2123° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.0185° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 12 km Depth of the event in kilometers.
Place 277km SE of Kodiak, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-04-05 17:50:45 Time when the event occurred. UTC/GMT
Updated 2018-04-10 00:32:49 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 138 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 0.42 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 ak19173864 Id of event.
Event Code 19173864 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak19173864, A comma-separated list of event ids that are associated to an event.

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