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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4 quake has struck near Atka in Alaska

Posted by admin on May 15, 2018 0 Comments

Earthquake location 51.5831S, -173.7889WA light earthquake with magnitude 4 (ml/mb) was reported 73 km SSE of Atka, Alaska (45 miles) on Thursday. Exact location of earthquake, longitude -173.7889 West, latitude 51.5831 North, depth = 40.69 km. Exact time and date of event in UTC/GMT: 03/05/18 / 2018-05-03 19:31:16 / May 3, 2018 @ 7:31 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4-magnitude earthquake was detected at 07:31:16 / 7:31 am (local time epicenter). The earthquake occurred at a depth of 40.69 km (25 miles) below the earth’s surface. Unique identifier: us1000dxg2. Ids that are associated to the event: ak19306380, us1000dxg2.

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

Did you feel it?

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: 73 km SSE of Atka, Alaska. This data 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 -173.7889° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.5831° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 40.69 km Depth of the event in kilometers.
Place 73km SSE of Atka, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-05-03 19:31:16 Time when the event occurred. UTC/GMT
Updated 2018-05-15 22:09:49 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 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 0.669 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.03 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 207 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 us1000dxg2 Id of event.
Event Code 1000dxg2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak19306380,us1000dxg2, A comma-separated list of event ids that are associated to an event.

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