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Major earthquake, 7.8 mag has occurred near Perryville in Alaska


Earthquake location 55.1079S, -158.4765WA major earthquake magnitude 7.8 (ml/mb) has struck on Wednesday, 98 km SSE of Perryville, Alaska (61 miles). The earthquake occurred at a depth of 10 km (6 miles). Exact location, longitude -158.4765° West, latitude 55.1079° North, depth = 10 km. Exact time and date of earthquake 22/07/20 / 2020-07-22 06:12:42 / July 22, 2020 @ 6:12 am UTC/GMT. A tsunami warning has been issued near Perryville in Alaska (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us7000asvb. Event ids that are associated: at00qdux98, us7000asvb. The temblor was reported at 06:12:42 / 6:12 am (local time epicenter).

Earthquakes 7.0 to 7.9 may cause serious damage. Every year there are an estimated 15 major earthquakes in the world. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days three and in the last 365 days thirty-nine earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city 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: 98 km SSE of Perryville, Alaska.

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More information

Parameter Value Description
Magnitude 7.8 mb The magnitude for the event.
Longitude -158.4765° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.1079° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 98 km SSE 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 06:12:42 Time when the event occurred. UTC/GMT
Updated 2020-07-22 06:30:47 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 25 The total number of felt reports
CDI 6 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 951 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 0.699 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.43 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 64 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 us7000asvb Id of event.
Event Code 7000asvb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00qdux98,us7000asvb, A comma-separated list of event ids that are associated to an event.

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