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Minor earthquake: M2.85 quake has struck near Ridgemark in CA

Earthquake location 36.7459984S, -121.4553299WA minor earthquake magnitude 2.85 (ml/mb) has occurred on Sunday, 11 kilometers (7 miles) from Ridgemark in CA. The temblor was detected at 02:41:27 / 2:41 am (local time epicenter). Exact location, longitude -121.4553299° West, latitude 36.7459984° North, depth = 7.3 km. Exact time and date of earthquake 16/12/18 / 2018-12-16 10:41:27 / December 16, 2018 @ 10:41 am UTC/GMT. The epicenter was at a depth of 7.3 km (5 miles). Unique identifier: nc73122090. Ids that are associated to the event: nc73122090.

Event epicenter was 77 km (48 miles) from San Jose (c. 945 900 pop), 19 km (12 miles) from Salinas (c. 150 400 pop), 57 km (36 miles) from Santa Cruz (c. 59 900 pop), 32 km (20 miles) from Watsonville (c. 51 200 pop), 31 km (19 miles) from Gilroy (c. 48 800 pop). Country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was San Jose, Saratoga, Alum Rock (min 5000 pop).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been 0, in the last 10 days 0, in the past 30 days 0 and in the last 365 days fifty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area. Every year there are an estimated 1,300,000 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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 11 km SW of Ridgemark, CA. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.85 mb The magnitude for the event.
Longitude -121.4553299° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.7459984° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 7.3 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 2018-12-16 10:41:27 Time when the event occurred. UTC/GMT
Updated 2018-12-16 10:46:03 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 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 125 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 49 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.01531 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 51 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type md The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID nc73122090 Id of event.
Event Code 73122090 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc73122090, A comma-separated list of event ids that are associated to an event.

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