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Moderate earthquake, 5.4 mag has occurred near Perryville in Alaska


Earthquake location 55.121S, -158.016WA moderate earthquake with magnitude 5.4 (ml/mb) was detected on Sunday, 113 km SE of Perryville, Alaska (70 miles). All ids that are associated to the event: at00qesxki. Unique identifier: at00qesxki. Global time and date of event 09/08/20 / 2020-08-09 14:57:54 / August 9, 2020 @ 2:57 pm UTC/GMT. The earthquake occurred at a depth of 32 km (20 miles) below the earth’s surface. A tsunami warning has been issued near Perryville in Alaska (Does not indicate if a tsunami actually did or will exist). The 5.4-magnitude earthquake was detected at 14:57:54 / 2:57 pm (local time epicenter). Exact location of earthquake, -158.016° West, 55.121° North, depth 32 km.

In the past 24 hours, there have been one, in the last 10 days thirteen, in the past 30 days ninety-two and in the last 365 days one hundred and twenty-five earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 1320 moderate earthquakes in the world. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 113 km SE of Perryville, Alaska.

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More information

Parameter Value Description
Magnitude 5.4 mb The magnitude for the event.
Longitude -158.016° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.121° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 32 km Depth of the event in kilometers.
Place 113 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 2020-08-09 14:57:54 Time when the event occurred. UTC/GMT
Updated 2020-08-09 15:02:41 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 1 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 449 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at, A comma-separated list of network contributors.
Number of Stations Used 52 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.203742 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.63 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 183.599985312 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 at00qesxki Id of event.
Event Code 00qesxki An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00qesxki, A comma-separated list of event ids that are associated to an event.

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