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Light earthquake: M4 quake has struck near Sand Point in Alaska

Posted by admin on October 21, 2020 0 Comments

Earthquake location 54.5676S, -159.6697WA light earthquake magnitude 4 (ml/mb) has struck on Wednesday, 100 km SSE of Sand Point, Alaska (62 miles). The temblor was reported at 00:33:51 / 12:33 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude -159.6697 West, latitude 54.5676 North, depth = 23.63 km. The earthquake was roughly at a depth of 23.63 km (15 miles). Global time and date of event 21/10/20 / 2020-10-21 00:33:51 / October 21, 2020 @ 12:33 am UTC/GMT. All ids that are associated to the event: ak020djvqkcb, us6000cag0. Unique identifier: us6000cag0.

In the past 24 hours, there have been fifty-four, in the last 10 days eighty-eight, in the past 30 days one hundred and one and in the last 365 days four hundred and eleven earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Did you feel anything?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 100 km SSE of Sand Point, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -159.6697° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.5676° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 23.63 km Depth of the event in kilometers.
Place 100 km SSE of Sand Point, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-10-21 00:33:51 Time when the event occurred. UTC/GMT
Updated 2020-10-21 02:18:49 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 246 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 0.268 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.32 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 209 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000cag0 Id of event.
Event Code 6000cag0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak020djvqkcb,us6000cag0, A comma-separated list of event ids that are associated to an event.

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