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Light earthquake: M4.2 quake has struck near Tanaga Volcano in Alaska

Posted by admin on August 16, 2018 0 Comments

Earthquake location 51.1706S, -177.7314WA light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 84 km SSE of Tanaga Volcano, Alaska (52 miles). The epicenter was at a depth of 48.12 km (30 miles). All ids that are associated to the event: us1000gage. Unique identifier: us1000gage. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, -177.7314° West, 51.1706° North, depth 48.12 km. The 4.2-magnitude earthquake has occurred at 01:27:59 / 1:27 am (local time epicenter). Exact time and date of event in UTC/GMT: 16/08/18 / 2018-08-16 13:27:59 / August 16, 2018 @ 1:27 pm.

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 four, in the last 10 days five, in the past 30 days twelve and in the last 365 days one hundred and seventy-six earthquakes of magnitude 3.0 or greater that have been detected nearby.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 84 km SSE of Tanaga Volcano, Alaska.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -177.7314° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1706° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 48.12 km Depth of the event in kilometers.
Place 84km SSE of Tanaga Volcano, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-08-16 13:27:59 Time when the event occurred. UTC/GMT
Updated 2018-08-16 13:39:44 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 271 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 0.772 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.27 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 213 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 us1000gage Id of event.
Event Code 1000gage An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000gage, A comma-separated list of event ids that are associated to an event.

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