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Light earthquake 4.8 mag, 13 km NE of Larsen Bay, Alaska

Earthquake location 57.6173S, -153.8044WA light earthquake magnitude 4.8 (ml/mb) has occurred on Sunday, 13 kilometers (8 miles) from Larsen Bay in Alaska. The 4.8-magnitude earthquake was detected at 08:45:02 / 8:45 am (local time epicenter). Date and time of earthquake in UTC/GMT: 03/01/21 / 2021-01-03 08:45:02 / January 3, 2021 @ 8:45 am. Exact location of earthquake, longitude -153.8044 West, latitude 57.6173 North, depth = 60.4 km. The earthquake occurred at a depth of 60.4 km (38 miles). A tsunami warning has been issued near Larsen Bay in Alaska (Does not indicate if a tsunami actually did or will exist). Id of earthquake: ak02153n5s1. Event ids that are associated: ak02153n5s1, at00qmcob2.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Kodiak. The epicenter was 85 km (53 miles) from Kodiak (c. 6 100 pop). Nearby country/countries that might be effected, United States (c. 310 233 000 pop).

Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days two and in the last 365 days twenty earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 13 km NE of Larsen Bay, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -153.8044° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 57.6173° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 60.4 km Depth of the event in kilometers.
Place 13 km NE of Larsen Bay, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-01-03 08:45:02 Time when the event occurred. UTC/GMT
Updated 2021-01-03 08:53:42 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 19 The total number of felt reports
CDI 3.8 The maximum reported intensity for the event.
MMI 3.51 The maximum estimated instrumental intensity for the event.
Alert Level green The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status automatic 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 362 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak,at, 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.73 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 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 ak02153n5s1 Id of event.
Event Code 02153n5s1 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak02153n5s1,at00qmcob2, A comma-separated list of event ids that are associated to an event.

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