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Moderate earthquake, 5.1 mag strikes near Perryville in Alaska


Earthquake location 55.0295S, -157.9774WA moderate earthquake magnitude 5.1 (ml/mb) strikes 122 km SE of Perryville, Alaska (76 miles) on Tuesday. Global time and date of event 18/08/20 / 2020-08-18 18:28:33 / August 18, 2020 @ 6:28 pm UTC/GMT. Exact location of event, longitude -157.9774 West, latitude 55.0295 North, depth = 30.58 km. The epicenter of the earthquake was roughly 30.58 km (19 miles) below the earth’s surface. Event id: us6000bgpv. Ids that are associated to the earthquake: at00qf9vbm, us6000bgpv. A tsunami warning has been issued near Perryville in Alaska (Does not indicate if a tsunami actually did or will exist). The 5.1-magnitude earthquake has occurred at 18:28:33 / 6:28 pm (local time epicenter).

Each year there are an estimated 1320 moderate quakes in the world. In the past 24 hours, there have been two, in the last 10 days fourteen, in the past 30 days one hundred and eleven and in the last 365 days one hundred and fourty-two earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

Did you feel the quake?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 122 km SE of Perryville, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 5.1 mb The magnitude for the event.
Longitude -157.9774° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.0295° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 30.58 km Depth of the event in kilometers.
Place 122 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 2020-08-18 18:28:33 Time when the event occurred. UTC/GMT
Updated 2020-08-18 18:42:28 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 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 400 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 ,at,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 0.951 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 132 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mww The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000bgpv Id of event.
Event Code 6000bgpv An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00qf9vbm,us6000bgpv, A comma-separated list of event ids that are associated to an event.

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