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Light earthquake 4.9 mag, 50 km S of Shemya Island, Alaska

Posted by admin on May 9, 2018 0 Comments

Earthquake location 52.2767S, 174.2329WA light earthquake with magnitude 4.9 (ml/mb) was reported 50 km S of Shemya Island, Alaska (31 miles) on Thursday. Date and time of earthquake in UTC/GMT: 09/05/18 / 2018-05-09 15:00:17 / May 9, 2018 @ 3:00 pm. A tsunami warning has been issued near Shemya Island in Alaska (Does not indicate if a tsunami actually did or will exist). Unique identifier: us1000e1dg. Ids that are associated to the event: at00p8gv0g, us1000e1dg. The epicenter was at a depth of 62.43 km (39 miles). The 4.9-magnitude earthquake has occurred at 03:00:17 / 3:00 am (local time epicenter). Exact location of earthquake, longitude 174.2329 East, latitude 52.2767 North, depth = 62.43 km.

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days two and in the last 365 days eight earthquakes of magnitude 3.0 or greater that have been detected nearby. Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 50 km S of Shemya Island, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.9 mb The magnitude for the event.
Longitude 174.2329° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.2767° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 62.43 km Depth of the event in kilometers.
Place 50km S of Shemya 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 2018-05-09 15:00:17 Time when the event occurred. UTC/GMT
Updated 2018-05-09 15:18:06 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 369 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 ,at,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 3.27 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.05 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 113 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 us1000e1dg Id of event.
Event Code 1000e1dg An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00p8gv0g,us1000e1dg, A comma-separated list of event ids that are associated to an event.

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