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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag has occurred near Attu Station in Alaska

Posted by admin on August 11, 2017 0 Comments

Earthquake location 52.4779S, 173.2733WA light earthquake with magnitude 4 (ml/mb) was detected on Monday, 41 km S of Attu Station, Alaska (25 miles). Exact time and date of event in UTC/GMT: 01/08/17 / 2017-08-01 08:28:06 / August 1, 2017 @ 8:28 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 22:28:06 / 10:28 pm (local time epicenter). Id of earthquake: us2000a5j2. Event ids that are associated: us2000a5j2. The earthquake occurred at a depth of 48.11 km (30 miles). Exact location of event, depth 48.11 km, 173.2733° East, 52.4779° North.

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

How would you describe the shaking?

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. 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: 41 km S of Attu Station, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 173.2733° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.4779° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 48.11 km Depth of the event in kilometers.
Place 41km S of Attu Station, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-08-01 08:28:06 Time when the event occurred. UTC/GMT
Updated 2017-08-11 07:47:47 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 3.89 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.68 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 205 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 us2000a5j2 Id of event.
Event Code 2000a5j2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000a5j2, A comma-separated list of event ids that are associated to an event.

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