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Light earthquake, 4.2 mag strikes near Perryville in Alaska

Posted by admin on December 25, 2020 0 Comments

Earthquake location 55.0335S, -157.6593WA light earthquake with magnitude 4.2 (ml/mb) was detected on Friday, 135 km SE of Perryville, Alaska (84 miles). Exact location of event, depth 37.26 km, -157.6593° West, 55.0335° North. The temblor was picked up at 05:54:19 / 5:54 am (local time epicenter). 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 37.26 km (23 miles) below the earth’s surface. Id of earthquake: us6000d2un. Event ids that are associated: us6000d2un. Date and time of earthquake in UTC/GMT: 25/12/20 / 2020-12-25 05:54:19 / December 25, 2020 @ 5:54 am.

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

How would you describe the shaking?

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. 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: 135 km SE of Perryville, Alaska.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -157.6593° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.0335° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 37.26 km Depth of the event in kilometers.
Place 135 km SE of Perryville, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-12-25 05:54:19 Time when the event occurred. UTC/GMT
Updated 2020-12-25 06:11:50 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 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 ,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 1.132 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 210 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 us6000d2un Id of event.
Event Code 6000d2un An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000d2un, A comma-separated list of event ids that are associated to an event.

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