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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4 quake has struck near Amukta Island in Alaska

Posted by admin on March 15, 2018 0 Comments

Earthquake location 51.9149S, -171.7979WA light earthquake with magnitude 4 (ml/mb) was detected on Wednesday, 73 km SSW of Amukta Island, Alaska (45 miles). Exact time and date of event in UTC/GMT: 28/02/18 / 2018-02-28 21:58:11 / February 28, 2018 @ 9:58 pm. The earthquake occurred at a depth of 45.27 km (28 miles). The temblor was reported at 10:58:11 / 10:58 am (local time epicenter). Unique identifier: us1000d15c. Ids that are associated to the event: ak18616458, us1000d15c. Exact location, longitude -171.7979° West, latitude 51.9149° North, depth = 45.27 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been ten, in the last 10 days twelve, in the past 30 days eighteen and in the last 365 days one hundred and fourty earthquakes of magnitude 3.0 or greater that was reported nearby.

How would you describe the shaking?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 73 km SSW of Amukta Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -171.7979° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.9149° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 45.27 km Depth of the event in kilometers.
Place 73km SSW of Amukta Island, 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 21:58:11 Time when the event occurred. UTC/GMT
Updated 2018-03-15 02:58:40 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 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 246 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 1.464 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.12 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 194 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 us1000d15c Id of event.
Event Code 1000d15c An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18616458,us1000d15c, A comma-separated list of event ids that are associated to an event.

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