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Light earthquake: M4 quake has struck near Perryville in Alaska

Posted by admin on July 23, 2020 0 Comments

Earthquake location 55.1385S, -159.1779WA light earthquake with magnitude 4 (ml/mb) was detected on Thursday, 86 km S of Perryville, Alaska (53 miles). Exact location of earthquake, -159.1779° West, 55.1385° North, depth 38.04 km. Unique identifier: us6000b2cy. Ids that are associated to the event: us6000b2cy. The earthquake occurred at a depth of 38.04 km (24 miles) below the earth’s surface. The 4-magnitude earthquake was detected at 00:35:11 / 12:35 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 23/07/20 / 2020-07-23 00:35:11 / July 23, 2020 @ 12:35 am.

Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been fourty-eight, in the last 10 days fourty-eight, in the past 30 days fifty and in the last 365 days eighty-seven earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

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: 86 km S of Perryville, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -159.1779° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.1385° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 38.04 km Depth of the event in kilometers.
Place 86 km S 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 2020-07-23 00:35:11 Time when the event occurred. UTC/GMT
Updated 2020-07-23 00:51:09 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 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 0.773 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.74 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 202 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000b2cy Id of event.
Event Code 6000b2cy An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000b2cy, A comma-separated list of event ids that are associated to an event.

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