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Minor earthquake: M3.1 quake has struck near Kodiak in Alaska



Earthquake location 56.2374S, -149.9202WA minor earthquake magnitude 3.1 (ml/mb) has occurred on Friday, 229 km SE of Kodiak, Alaska (142 miles). Event ids that are associated to the earthquake: ak18858633, us1000dbwi. Id of event: us1000dbwi. The earthquake occurred at a depth of 20.8 km (13 miles). Global time and date of event 31/03/18 / 2018-03-31 03:17:58 / March 31, 2018 @ 3:17 am UTC/GMT. Exact location of event, longitude -149.9202 West, latitude 56.2374 North, depth = 20.8 km. The temblor was picked up at 17:17:58 / 5:17 pm (local time epicenter).

In the past 24 hours, there have been eight, in the last 10 days fifty-four, in the past 30 days three hundred and seventy-eight and in the last 365 days two thousand, nine hundred and twenty-seven 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. Each year there are an estimated 130,000 minor quakes in the world.

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 229 km SE of Kodiak, Alaska.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -149.9202° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.2374° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.8 km Depth of the event in kilometers.
Place 229km 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 2018-03-31 03:17:58 Time when the event occurred. UTC/GMT
Updated 2018-04-01 03:08:26 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 148 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 2.102 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.61 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 242 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 us1000dbwi Id of event.
Event Code 1000dbwi An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18858633,us1000dbwi, A comma-separated list of event ids that are associated to an event.

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