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Minor earthquake, 2.9 mag strikes near Kodiak in Alaska

Earthquake location 56.4846S, -148.5137WA minor earthquake magnitude 2.9 (ml/mb) has occurred on Friday, 276 km ESE of Kodiak, Alaska (171 miles). Event ids that are associated to the earthquake: ak19173597, us2000dx8r. Id of event: us2000dx8r. Exact time and date of event in UTC/GMT: 31/03/18 / 2018-03-31 07:21:53 / March 31, 2018 @ 7:21 am. The earthquake was roughly at a depth of 20.2 km (13 miles). The 2.9-magnitude earthquake has occurred at 21:21:53 / 9:21 pm (local time epicenter). Exact location of event, depth 20.2 km, -148.5137° West, 56.4846° North.

Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. In the past 24 hours, there have been one hundred and twelve, in the last 10 days two hundred and nineteen, in the past 30 days five hundred and sixty-nine and in the last 365 days two thousand, eight hundred and eighty-three earthquakes of magnitude 3.0 or greater that has struck near. Each year there are an estimated 130,000 minor quakes in the world.

Questions or comments?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 276 km ESE of Kodiak, Alaska.

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More information

Parameter Value Description
Magnitude 2.9 mb The magnitude for the event.
Longitude -148.5137° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.4846° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.2 km Depth of the event in kilometers.
Place 276km ESE 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 07:21:53 Time when the event occurred. UTC/GMT
Updated 2018-04-15 09:49:02 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 129 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 2.572 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.75 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 216 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 us2000dx8r Id of event.
Event Code 2000dx8r An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak19173597,us2000dx8r, A comma-separated list of event ids that are associated to an event.

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