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Minor earthquake, 3 mag was detected near Kodiak in Alaska



Earthquake location 56.2851S, -148.8142WA minor earthquake magnitude 3 (ml/mb) has struck on Wednesday, 275 km SE of Kodiak, Alaska (171 miles). The 3-magnitude earthquake has occurred at 13:04:02 / 1:04 pm (local time epicenter). Date and time of earthquake in UTC/GMT: 28/02/18 / 2018-02-28 23:04:02 / February 28, 2018 @ 11:04 pm. Unique identifier: us1000d15d. Ids that are associated to the event: ak18616463, us1000d15d. Exact location of event, longitude -148.8142 West, latitude 56.2851 North, depth = 21.25 km. The earthquake occurred at a depth of 21.25 km (13 miles) below the earth’s surface.

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

Did you feel anything?

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: 275 km SE of Kodiak, Alaska.

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More information

Parameter Value Description
Magnitude 3 mb The magnitude for the event.
Longitude -148.8142° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.2851° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 21.25 km Depth of the event in kilometers.
Place 275km 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 2018-02-28 23:04:02 Time when the event occurred. UTC/GMT
Updated 2018-03-16 00:54:56 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 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 2.549 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.53 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 205 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 us1000d15d Id of event.
Event Code 1000d15d An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18616463,us1000d15d, A comma-separated list of event ids that are associated to an event.

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