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Light earthquake 4.8 mag, 8 km E of Semisopochnoi Island, Alaska

Posted by admin on April 17, 2020 0 Comments

Earthquake location 51.9482S, 179.7288WA light earthquake with magnitude 4.8 (ml/mb) was reported 8 km E of Semisopochnoi Island, Alaska (5 miles) on Thursday. Exact location, longitude 179.7288° East, latitude 51.9482° North, depth = 137.82 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 19:06:32 / 7:06 pm (local time epicenter). Id of earthquake: us70008y6d. Event ids that are associated: us70008y6d. Exact time and date of event in UTC/GMT: 17/04/20 / 2020-04-17 05:06:32 / April 17, 2020 @ 5:06 am. The earthquake was roughly at a depth of 137.82 km (86 miles).

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 one, in the last 10 days two, in the past 30 days five and in the last 365 days seventy-eight earthquakes of magnitude 3.0 or greater that have been detected 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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 8 km E of Semisopochnoi Island, Alaska.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude 179.7288° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.9482° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 137.82 km Depth of the event in kilometers.
Place 8km E of Semisopochnoi 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 2020-04-17 05:06:32 Time when the event occurred. UTC/GMT
Updated 2020-04-17 05:21:50 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 354 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 ,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 0.631 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.98 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 114 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 us70008y6d Id of event.
Event Code 70008y6d An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us70008y6d, A comma-separated list of event ids that are associated to an event.

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