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Light earthquake: M4.8 quake has struck near Adak in Alaska

Posted by admin on May 9, 2017 0 Comments

Earthquake location 50.994S, -176.8093WA light earthquake with magnitude 4.8 (ml/mb) was detected on Monday, 99 km S of Adak, Alaska (62 miles). Exact time and date of event in UTC/GMT: 09/05/17 / 2017-05-09 09:02:00 / May 9, 2017 @ 9:02 am. The 4.8-magnitude earthquake has occurred at 21:02:00 / 9:02 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: ak16008069. Unique identifier: ak16008069. Exact location, longitude -176.8093° West, latitude 50.994° North, depth = 34.3 km. The epicenter of the earthquake was roughly 34.3 km (21 miles) below the earth’s surface.

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. In the past 24 hours, there have been ten, in the last 10 days ten, in the past 30 days twelve and in the last 365 days one hundred and sixty-five 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: 99 km S of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -176.8093° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.994° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 34.3 km Depth of the event in kilometers.
Place 99km S of Adak, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-05-09 09:02:00 Time when the event occurred. UTC/GMT
Updated 2017-05-09 09:21:06 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 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 ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak, 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.39 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ak16008069 Id of event.
Event Code 16008069 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16008069, A comma-separated list of event ids that are associated to an event.

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