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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag was detected near Sand Point in Alaska

Earthquake location 54.8335S, -160.3174WA light earthquake magnitude 4 (ml/mb) has occurred on Thursday, 57 km SSE of Sand Point, Alaska (35 miles). The temblor was detected at 07:38:44 / 7:38 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 23/07/20 / 2020-07-23 07:38:44 / July 23, 2020 @ 7:38 am UTC/GMT. The epicenter of the earthquake was roughly 33.54 km (21 miles) below the earth’s surface. Event ids that are associated to the earthquake: us6000b2i2. Id of event: us6000b2i2. Exact location of event, longitude -160.3174 West, latitude 54.8335 North, depth = 33.54 km.

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. In the past 24 hours, there have been sixty-eight, in the last 10 days seventy-nine, in the past 30 days eighty-one and in the last 365 days one hundred and thirty-four earthquakes of magnitude 3.0 or greater that was reported nearby.

Questions or comments?

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. 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: 57 km SSE of Sand Point, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -160.3174° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.8335° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 33.54 km Depth of the event in kilometers.
Place 57 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 2020-07-23 07:38:44 Time when the event occurred. UTC/GMT
Updated 2020-07-28 12:46:30 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 ,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 0.421 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.8 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 150 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 us6000b2i2 Id of event.
Event Code 6000b2i2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000b2i2, A comma-separated list of event ids that are associated to an event.

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