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



Earthquake location 56.0981S, -149.8122WA minor earthquake magnitude 3.1 (ml/mb) has occurred on Sunday, 245 km SE of Kodiak, Alaska (152 miles). All ids that are associated to the event: ak18708568, us1000d9y6. Unique identifier: us1000d9y6. Exact time and date of event in UTC/GMT: 18/03/18 / 2018-03-18 18:23:34 / March 18, 2018 @ 6:23 pm. The earthquake occurred at a depth of 20.44 km (13 miles). Exact location, longitude -149.8122° West, latitude 56.0981° North, depth = 20.44 km. The temblor was reported at 08:23:34 / 8:23 am (local time epicenter).

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

How would you describe the shaking?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 245 km SE of Kodiak, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -149.8122° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.0981° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.44 km Depth of the event in kilometers.
Place 245km 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 2018-03-18 18:23:34 Time when the event occurred. UTC/GMT
Updated 2018-04-16 16:38:32 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 2.225 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.84 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 197 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 us1000d9y6 Id of event.
Event Code 1000d9y6 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18708568,us1000d9y6, A comma-separated list of event ids that are associated to an event.

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