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Light earthquake, 4.3 mag has occurred near Nanwalek in Alaska

Earthquake location 58.7894S, -152.4357WA light earthquake with magnitude 4.3 (ml/mb) was reported 69 km SSW of Nanwalek, Alaska (43 miles) on Thursday. The earthquake occurred at a depth of 26.9 km (17 miles). Exact time and date of event in UTC/GMT: 04/03/21 / 2021-03-04 10:48:10 / March 4, 2021 @ 10:48 am. A tsunami warning has been issued near Nanwalek in Alaska (Does not indicate if a tsunami actually did or will exist). Unique identifier: ak0212wd3idi. Ids that are associated to the event: ak0212wd3idi, at00qpfy0b. The temblor was reported at 10:48:10 / 10:48 am (local time epicenter). Exact location of event, longitude -152.4357 West, latitude 58.7894 North, depth = 26.9 km.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. 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 one, in the past 30 days three and in the last 365 days thirty-nine earthquakes of magnitude 3.0 or greater that was reported nearby.

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 69 km SSW of Nanwalek, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -152.4357° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 58.7894° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 26.9 km Depth of the event in kilometers.
Place 69 km SSW of Nanwalek, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-03-04 10:48:10 Time when the event occurred. UTC/GMT
Updated 2021-03-04 11:01:58 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 4 The total number of felt reports
CDI 3.1 The maximum reported intensity for the event.
MMI 3.72 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 286 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 0.56 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 ak0212wd3idi Id of event.
Event Code 0212wd3idi An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak0212wd3idi,at00qpfy0b, A comma-separated list of event ids that are associated to an event.

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