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Minor earthquake, 2.8 mag strikes near Perryville in Alaska

Earthquake location 55.1236S, -159.0453WA minor earthquake with magnitude 2.8 (ml/mb) was detected on Wednesday, 87 km S of Perryville, Alaska (54 miles). Exact time and date of earthquake 22/07/20 / 2020-07-22 09:47:30 / July 22, 2020 @ 9:47 am UTC/GMT. Event id: us7000at03. Ids that are associated to the earthquake: ak0209dj9u5v, us7000at03. Exact location, longitude -159.0453° West, latitude 55.1236° North, depth = 34.42 km. The epicenter was at a depth of 34.42 km (21 miles). The temblor was detected at 09:47:30 / 9:47 am (local time epicenter).

In the past 24 hours, there have been ninety-one, in the last 10 days ninety-one, in the past 30 days ninety-two and in the last 365 days one hundred and twenty-eight earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 1,300,000 minor earthquakes in the world each year. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city 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: 87 km S of Perryville, Alaska.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -159.0453° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.1236° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 34.42 km Depth of the event in kilometers.
Place 87 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 2020-07-22 09:47:30 Time when the event occurred. UTC/GMT
Updated 2020-07-26 10:39:28 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 121 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 ,ak,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 0.429 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.55 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 158 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 us7000at03 Id of event.
Event Code 7000at03 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak0209dj9u5v,us7000at03, A comma-separated list of event ids that are associated to an event.

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