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Earthquake breaking news, Minor World Earthquakes Magnitude -3.9

Minor earthquake 3.14 mag, 3 km S of Ridgemark, CA


Earthquake location 36.788333892822S, -121.35866546631WA minor earthquake with magnitude 3.14 (ml/mb) was detected on Friday, 3 kilometers (2 miles) from Ridgemark in CA. All ids that are associated to the event: nc75159727. Unique identifier: nc75159727. Exact location of event, longitude -121.35866546631 West, latitude 36.788333892822 North, depth = 3.9000000953674 km. The earthquake occurred at a depth of 3.9000000953674 km (2 miles). The temblor was detected at 04:23:42 / 4:23 am (local time epicenter). Exact time and date of event in UTC/GMT: 04/04/25 / 2025-04-04 04:23:42 / April 4, 2025 @ 4:23 am.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Saratoga, Patterson, San Jose. Close country/countries, United States (c. 310 233 000 pop) (That might be effected). Epicenter of the event was 78 km (48 miles) from San Jose (c. 945 900 pop), 29 km (18 miles) from Salinas (c. 150 400 pop), 63 km (39 miles) from Santa Cruz (c. 59 900 pop), 38 km (24 miles) from Watsonville (c. 51 200 pop), 31 km (19 miles) from Gilroy (c. 48 800 pop).

Each year there are an estimated 130,000 minor quakes in the world. 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-nine earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 3 km S of Ridgemark, CA.

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More information

Parameter Value Description
Magnitude 3.14 mb The magnitude for the event.
Longitude -121.35866546631° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.788333892822° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 3.9000000953674 km Depth of the event in kilometers.
Place 3 km S 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 2025-04-04 04:23:42 Time when the event occurred. UTC/GMT
Updated 2025-04-04 04:33:06 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 46 The total number of felt reports
CDI 3.4 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 167 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 73 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.07512 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.15 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 36 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 nc75159727 Id of event.
Event Code 75159727 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc75159727, A comma-separated list of event ids that are associated to an event.

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