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Earthquake breaking news, Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.31 mag strikes near Ridgemark in CA


Earthquake location 36.7451668S, -121.4503326WA minor earthquake magnitude 3.31 (ml/mb) has struck on Friday, 11 kilometers (7 miles) from Ridgemark in CA. Global time and date of event 04/12/20 / 2020-12-04 03:18:25 / December 4, 2020 @ 3:18 am UTC/GMT. The 3.31-magnitude earthquake has occurred at 03:18:25 / 3:18 am (local time epicenter). Exact location, longitude -121.4503326° West, latitude 36.7451668° North, depth = 7.37 km. All ids that are associated to the event: nc73492895. Unique identifier: nc73492895. The epicenter of the earthquake was roughly 7.37 km (5 miles) below the earth’s surface.

Event epicenter was 77 km (48 miles) from San Jose (c. 945 900 pop), 20 km (12 miles) from Salinas (c. 150 400 pop), 81 km (50 miles) from Santa Clara (c. 116 500 pop), 58 km (36 miles) from Santa Cruz (c. 59 900 pop), 33 km (20 miles) from Watsonville (c. 51 200 pop). Close country/countries, United States (c. 310 233 000 pop) (That might be effected). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Santa Clara, East Foothills, San Jose.

There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days four and in the last 365 days fourty-nine 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.

Did you feel anything?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 11 km SW of Ridgemark, CA.

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More information

Parameter Value Description
Magnitude 3.31 mb The magnitude for the event.
Longitude -121.4503326° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.7451668° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 7.37 km Depth of the event in kilometers.
Place 11km SW of Ridgemark, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-12-04 03:18:25 Time when the event occurred. UTC/GMT
Updated 2020-12-04 03:20:38 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 169 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network nc The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,nc, A comma-separated list of network contributors.
Number of Stations Used 67 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.01899 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.18 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 45 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 nc73492895 Id of event.
Event Code 73492895 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc73492895, A comma-separated list of event ids that are associated to an event.

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