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Minor earthquake, 3.91 mag has occurred near Tres Pinos in CA

Earthquake location 36.7651672S, -121.3588333WA minor earthquake magnitude 3.91 (ml/mb) strikes 4 kilometers (2 miles) from Tres Pinos in CA on Friday. Global time and date of event 05/10/18 / 2018-10-05 13:29:37 / October 5, 2018 @ 1:29 pm UTC/GMT. Exact location of earthquake, -121.3588333° West, 36.7651672° North, depth 5.11 km. The 3.91-magnitude earthquake was detected at 05:29:37 / 5:29 am (local time epicenter). The epicenter of the earthquake was roughly 5.11 km (3 miles) below the earth’s surface. Unique identifier: nc73093981. Ids that are associated to the event: nc73093981, at00pg4o5d, us1000h7il. A tsunami warning has been issued near Tres Pinos in CA (Does not indicate if a tsunami actually did or will exist).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Milpitas, Mendota, Cupertino. The epicenter was 80 km (49 miles) from San Jose (c. 945 900 pop), 28 km (18 miles) from Salinas (c. 150 400 pop), 84 km (52 miles) from Santa Clara (c. 116 500 pop), 88 km (55 miles) from Milpitas (c. 66 800 pop), 64 km (40 miles) from Santa Cruz (c. 59 900 pop), 86 km (54 miles) from Cupertino (c. 58 300 pop). Nearby country/countries that might be effected, United States (c. 310 233 000 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 sixty-two earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

How would you describe the shaking?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 4 km SW of Tres Pinos, CA. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.91 mb The magnitude for the event.
Longitude -121.3588333° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.7651672° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 5.11 km Depth of the event in kilometers.
Place 4km SW of Tres Pinos, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-10-05 13:29:37 Time when the event occurred. UTC/GMT
Updated 2018-10-05 13:42:07 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 101 The total number of felt reports
CDI 4.2 The maximum reported intensity for the event.
MMI 4.79 The maximum estimated instrumental intensity for the event.
Alert Level green 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 1 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 278 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,at,us, A comma-separated list of network contributors.
Number of Stations Used 61 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.07089 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.24 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 65 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 nc73093981 Id of event.
Event Code 73093981 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc73093981,at00pg4o5d,us1000h7il, A comma-separated list of event ids that are associated to an event.

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