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Earthquake breaking news, Minor World Earthquakes Magnitude -3.9

Minor earthquake 3.9509 mag, 32 km NW of San Simeon, California


Earthquake location 35.8571S, -121.4337WA minor earthquake with magnitude 3.9509 (ml/mb) was detected on Sunday, 32 kilometers (20 miles) from San Simeon in California. Date and time of earthquake in UTC/GMT: 28/02/21 / 2021-02-28 08:45:40 / February 28, 2021 @ 8:45 am. Event ids that are associated to the earthquake: ew1614501940. Id of event: ew1614501940. Exact location of event, depth 8 km, -121.4337° West, 35.8571° North. The earthquake occurred at a depth of 8 km (5 miles) below the earth’s surface. The temblor was detected at 08:45:40 / 8:45 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Epicenter of the event was 80 km (50 miles) from Atascadero (c. 28 300 pop), 72 km (45 miles) from Paso Robles (c. 27 200 pop), 64 km (40 miles) from Soledad (c. 25 700 pop), 54 km (34 miles) from Greenfield (c. 16 300 pop), 81 km (51 miles) from Los Osos (c. 14 300 pop), 48 km (30 miles) from King City (c. 12 900 pop). Nearest cities/city/towns to hypocenter/epicentrum was Los Osos, Atascadero, Morro Bay (min 5000 pop). Nearby country/countries that might be effected, United States (c. 310 233 000 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days thirty-eight earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Every year there are an estimated 130,000 minor earthquakes in the world.

Did you feel the quake?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 32 km NW of San Simeon, California.

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More information

Parameter Value Description
Magnitude 3.9509 mb The magnitude for the event.
Longitude -121.4337° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 35.8571° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8 km Depth of the event in kilometers.
Place 32 km NW of San Simeon, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-02-28 08:45:40 Time when the event occurred. UTC/GMT
Updated 2021-02-28 08:45:50 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 automatic 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 240 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ew The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ew, A comma-separated list of network contributors.
Number of Stations Used 4 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 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 mw The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ew1614501940 Id of event.
Event Code 1614501940 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ew1614501940, A comma-separated list of event ids that are associated to an event.

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