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Light earthquake: M4.5 quake has struck near Kodiak in Alaska

Posted by admin on April 1, 2018 0 Comments

Earthquake location 56.1542S, -149.9577WA light earthquake magnitude 4.5 (ml/mb) has occurred on Friday, 235 km SE of Kodiak, Alaska (146 miles). Event ids that are associated to the earthquake: ak18855911, us1000dbrr. Id of event: us1000dbrr. Exact location of event, longitude -149.9577 West, latitude 56.1542 North, depth = 17.2 km. The earthquake was roughly at a depth of 17.2 km (11 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 31/03/18 / 2018-03-31 01:07:49 / March 31, 2018 @ 1:07 am. The temblor was reported at 15:07:49 / 3:07 pm (local time epicenter).

In the past 24 hours, there have been four, in the last 10 days fifty-one, in the past 30 days three hundred and seventy-six and in the last 365 days two thousand, nine hundred and twenty-two earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world.

How would you describe the shaking?

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. 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: 235 km SE of Kodiak, Alaska.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -149.9577° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.1542° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 17.2 km Depth of the event in kilometers.
Place 235km 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 01:07:49 Time when the event occurred. UTC/GMT
Updated 2018-04-01 02:15:22 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 2.2 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 312 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 2.126 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.8 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 141 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us1000dbrr Id of event.
Event Code 1000dbrr An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18855911,us1000dbrr, A comma-separated list of event ids that are associated to an event.

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