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Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.9 quake has struck near Semisopochnoi Island in Alaska

Posted by admin on August 9, 2019 0 Comments

Earthquake location 51.7566S, 179.6098WA minor earthquake magnitude 3.9 (ml/mb) has struck on Monday, 21 km S of Semisopochnoi Island, Alaska (13 miles). The 3.9-magnitude earthquake was detected at 02:51:44 / 2:51 am (local time epicenter). Exact location, longitude 179.6098° East, latitude 51.7566° North, depth = 74.39 km. The epicenter of the earthquake was roughly 74.39 km (46 miles) below the earth’s surface. All ids that are associated to the event: us600050th. Unique identifier: us600050th. Global time and date of event 05/08/19 / 2019-08-05 12:51:44 / August 5, 2019 @ 12:51 pm UTC/GMT.

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days six and in the last 365 days fifty-seven earthquakes of magnitude 3.0 or greater that was reported nearby.

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: 21 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 3.9 mb The magnitude for the event.
Longitude 179.6098° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.7566° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 74.39 km Depth of the event in kilometers.
Place 21km 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 2019-08-05 12:51:44 Time when the event occurred. UTC/GMT
Updated 2019-08-09 12:25:54 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 234 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 0.426 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.65 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 121 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 us600050th Id of event.
Event Code 600050th An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us600050th, A comma-separated list of event ids that are associated to an event.

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