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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.1 mag, 11 km WSW of Atka, Alaska

Earthquake location 52.1409S, -174.3511WA light earthquake with magnitude 4.1 (ml/mb) was reported 11 km WSW of Atka, Alaska (7 miles) on Saturday. The temblor was picked up at 00:57:24 / 12:57 am (local time epicenter). Event id: us600054e4. Ids that are associated to the earthquake: ak01998lbcyg, us600054e4. Date and time of earthquake in UTC/GMT: 20/07/19 / 2019-07-20 10:57:24 / July 20, 2019 @ 10:57 am. Exact location of event, depth 178.04 km, -174.3511° West, 52.1409° North. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 178.04 km (111 miles) below the earth’s surface.

In the past 24 hours, there have been six, in the last 10 days eight, in the past 30 days sixteen and in the last 365 days one hundred and seventeen 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. Every year there are an estimated 13,000 light earthquakes in the world.

Did you feel anything?

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 11 km WSW of Atka, Alaska.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -174.3511° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.1409° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 178.04 km Depth of the event in kilometers.
Place 11km WSW of Atka, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-07-20 10:57:24 Time when the event occurred. UTC/GMT
Updated 2019-08-16 07:56:42 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 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 259 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 0.112 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.54 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 184 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 us600054e4 Id of event.
Event Code 600054e4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak01998lbcyg,us600054e4, A comma-separated list of event ids that are associated to an event.

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