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Minor earthquake, 2.84 mag has occurred near Danville in CA

Earthquake location 37.8233337S, -121.9789963WA minor earthquake magnitude 2.84 (ml/mb) strikes 2 kilometers (1 miles) from Danville in CA on Friday. The 2.84-magnitude earthquake has occurred at 03:24:57 / 3:24 am (local time epicenter). The earthquake was roughly at a depth of 6.58 km (4 miles). Exact time and date of event in UTC/GMT: 23/02/18 / 2018-02-23 11:24:57 / February 23, 2018 @ 11:24 am. Exact location of event, longitude -121.9789963 West, latitude 37.8233337 North, depth = 6.58 km. Unique identifier: nc72974536. Ids that are associated to the event: nc72974536.

Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Epicenter of the earthquake was 54 km (34 miles) from San Jose (c. 945 900 pop), 39 km (24 miles) from San Francisco (c. 805 200 pop), 26 km (16 miles) from Oakland (c. 390 700 pop), 62 km (39 miles) from Stockton (c. 291 700 pop), 31 km (19 miles) from Fremont (c. 214 100 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Galt, Ripon, Petaluma.

Every year there are an estimated 1,300,000 minor earthquakes in the world. In the past 24 hours, there have been 0, in the last 10 days three, in the past 30 days four and in the last 365 days thirty-five earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

How would you describe the shaking?

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. 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: 2 km E of Danville, CA.

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More information

Parameter Value Description
Magnitude 2.84 mb The magnitude for the event.
Longitude -121.9789963° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.8233337° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 6.58 km Depth of the event in kilometers.
Place 2km E of Danville, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-02-23 11:24:57 Time when the event occurred. UTC/GMT
Updated 2018-02-23 11:34:16 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 40 The total number of felt reports
CDI 3.8 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 139 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 50 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.06689 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.09 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 63 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 nc72974536 Id of event.
Event Code 72974536 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72974536, A comma-separated list of event ids that are associated to an event.

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