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Light earthquake, 4.23 mag has occurred near Ridgemark in California

Earthquake location 36.6926651S, -121.3276672WA light earthquake with magnitude 4.23 (ml/mb) was reported 13 kilometers (8 miles) from Ridgemark in California on Tuesday. The earthquake occurred at a depth of 6.38 km (4 miles). All ids that are associated to the event: at00oal04d, nc72663506. Unique identifier: nc72663506. The temblor was detected at 14:38:38 / 2:38 pm (local time epicenter). A tsunami warning has been issued near Ridgemark in California (Does not indicate if a tsunami actually did or will exist). Global time and date of event 19/07/16 / 2016-07-19 21:38:38 / July 19, 2016 @ 9:38 pm UTC/GMT. Exact location, longitude -121.3276672° West, latitude 36.6926651° North, depth = 6.38 km.

Epicenter of the event was 88 km (55 miles) from San Jose (c. 945 900 pop), 29 km (18 miles) from Salinas (c. 150 400 pop), 92 km (57 miles) from Santa Clara (c. 116 500 pop), 70 km (43 miles) from Santa Cruz (c. 59 900 pop), 45 km (28 miles) from Watsonville (c. 51 200 pop), 41 km (25 miles) from Gilroy (c. 48 800 pop). Close country/countries, United States (c. 310 233 000 pop) (That might be effected). Nearest cities/city/towns to hypocenter/epicentrum was Santa Clara, Hilmar-Irwin, Saratoga (min 5000 pop).

In the past 24 hours, there have been three, in the last 10 days nine, in the past 30 days eleven and in the last 365 days fourty-one earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 13 km SSE of Ridgemark, California.

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More information

Parameter Value Description
Magnitude 4.23 mb The magnitude for the event.
Longitude -121.3276672° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.6926651° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 6.38 km Depth of the event in kilometers.
Place 13km SSE of Ridgemark, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-07-19 21:38:38 Time when the event occurred. UTC/GMT
Updated 2016-07-19 21:51:42 Time when the event was most recently updated. UTC/GMT
Timezone offset -420 Timezone offset from UTC in minutes at the event epicenter.
Felt 287 The total number of felt reports
CDI 3.8 The maximum reported intensity for the event.
MMI 4.35 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 384 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 ,at,nc, A comma-separated list of network contributors.
Number of Stations Used 70 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.05092 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 29 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 nc72663506 Id of event.
Event Code 72663506 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00oal04d,nc72663506, A comma-separated list of event ids that are associated to an event.

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