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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag has occurred near Unalaska in Alaska

Posted by admin on January 12, 2017 0 Comments

Earthquake location 53.5651S, -166.6603WA light earthquake magnitude 4 (ml/mb) has occurred on Monday, 35 km SSW of Unalaska, Alaska (22 miles). Exact location, longitude -166.6603° West, latitude 53.5651° North, depth = 70.1 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4-magnitude earthquake was detected at 23:05:30 / 11:05 pm (local time epicenter). The epicenter of the earthquake was roughly 70.1 km (44 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 03/01/17 / 2017-01-03 08:05:30 / January 3, 2017 @ 8:05 am. Unique identifier: ak14906134. Ids that are associated to the event: ak14906134.

In the past 24 hours, there have been three, in the last 10 days five, in the past 30 days twelve and in the last 365 days one hundred and six earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 13,000 light earthquakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 35 km SSW of Unalaska, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -166.6603° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 53.5651° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 70.1 km Depth of the event in kilometers.
Place 35km SSW of Unalaska, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-01-03 08:05:30 Time when the event occurred. UTC/GMT
Updated 2017-01-12 22:45:21 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 2.7 The maximum reported intensity for the event.
MMI 2.72 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 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 0.38 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 ak14906134 Id of event.
Event Code 14906134 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak14906134, A comma-separated list of event ids that are associated to an event.

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