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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag has occurred near Adak in Alaska

Earthquake location 51.8651S, -176.5649WA light earthquake with magnitude 4 (ml/mb) was detected on Wednesday, 6 km ESE of Adak, Alaska (4 miles). The earthquake occurred at a depth of 57.35 km (36 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 29/08/18 / 2018-08-29 15:21:39 / August 29, 2018 @ 3:21 pm UTC/GMT. Unique identifier: us2000h9h7. Ids that are associated to the event: us2000h9h7. Exact location of earthquake, -176.5649° West, 51.8651° North, depth 57.35 km. The temblor was detected at 05:21:39 / 5:21 am (local time epicenter).

In the past 24 hours, there have been sixteen, in the last 10 days nineteen, in the past 30 days twenty-eight and in the last 365 days one hundred and fifteen earthquakes of magnitude 3.0 or greater that was reported 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.

How would you describe the shaking?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 6 km ESE of Adak, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -176.5649° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.8651° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 57.35 km Depth of the event in kilometers.
Place 6km ESE 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 2018-08-29 15:21:39 Time when the event occurred. UTC/GMT
Updated 2018-09-12 02:29:58 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 246 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 0.364 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.23 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 194 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 us2000h9h7 Id of event.
Event Code 2000h9h7 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000h9h7, A comma-separated list of event ids that are associated to an event.

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