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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, 80 km S of Semisopochnoi Island, Alaska

Posted by admin on October 1, 2015 0 Comments

Earthquake location 51.2333S, 179.4178WA light earthquake magnitude 4.2 (ml/mb) strikes 80 km S of Semisopochnoi Island, Alaska (50 miles) on Wednesday. Unique identifier: us20003ftj. Ids that are associated to the event: ak11690456, us20003ftj. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 37.6 km (23 miles) below the earth’s surface. The temblor was reported at 09:55:04 / 9:55 am (local time epicenter). Exact time and date of earthquake 02/09/15 / 2015-09-02 18:55:04 / September 2, 2015 @ 6:55 pm UTC/GMT. Exact location of earthquake, 179.4178° East, 51.2333° North, depth 37.6 km.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been seven, in the last 10 days eleven, in the past 30 days sixteen and in the last 365 days one hundred and fourty-five earthquakes of magnitude 3.0 or greater that has struck near. There are an estimated 13,000 light earthquakes in the world each year.

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 80 km S of Semisopochnoi Island, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 179.4178° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.2333° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 37.6 km Depth of the event in kilometers.
Place 80km S of Semisopochnoi 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 2015-09-02 18:55:04 Time when the event occurred. UTC/GMT
Updated 2015-10-01 15:56:24 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 ,ak,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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.62 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 mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us20003ftj Id of event.
Event Code 20003ftj An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak11690456,us20003ftj, A comma-separated list of event ids that are associated to an event.

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