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Moderate earthquake, 5.2 mag strikes near Semisopochnoi Island in Alaska

Posted by admin on October 30, 2018 0 Comments

Earthquake location 52.183S, -179.516WA moderate earthquake magnitude 5.2 (ml/mb) has struck on Tuesday, 65 km ENE of Semisopochnoi Island, Alaska (40 miles). The earthquake occurred at a depth of 249 km (155 miles) below the earth’s surface. Event id: at00pheya4. Ids that are associated to the earthquake: at00pheya4. A tsunami warning has been issued near Semisopochnoi Island in Alaska (Does not indicate if a tsunami actually did or will exist). The 5.2-magnitude earthquake was detected at 01:18:04 / 1:18 am (local time epicenter). Date and time of earthquake in UTC/GMT: 30/10/18 / 2018-10-30 13:18:04 / October 30, 2018 @ 1:18 pm. Exact location of earthquake, -179.516° West, 52.183° North, depth 249 km.

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days seventy-five earthquakes of magnitude 3.0 or greater that have been detected nearby. There are an estimated 1320 moderate earthquakes in the world each year.

Questions or comments?

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: 65 km ENE of Semisopochnoi Island, Alaska.

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More information

Parameter Value Description
Magnitude 5.2 mb The magnitude for the event.
Longitude -179.516° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.183° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 249 km Depth of the event in kilometers.
Place 65km ENE 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 2018-10-30 13:18:04 Time when the event occurred. UTC/GMT
Updated 2018-10-30 13:25:32 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 1 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 416 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at, A comma-separated list of network contributors.
Number of Stations Used 61 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.6216342 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.67 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 89.999992800001 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 at00pheya4 Id of event.
Event Code 00pheya4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00pheya4, A comma-separated list of event ids that are associated to an event.

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