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Minor earthquake, 2.89 mag strikes near Danville in CA

Earthquake location 37.8258324S, -121.982666WA minor earthquake with magnitude 2.89 (ml/mb) was detected on Friday, 2 kilometers (1 miles) from Danville in CA. Global date and time of event UTC/GMT: 21/04/18 / 2018-04-21 03:43:54 / April 21, 2018 @ 3:43 am. All ids that are associated to the event: nc73002081. Unique identifier: nc73002081. The earthquake was roughly at a depth of 7.15 km (4 miles). The 2.89-magnitude earthquake has occurred at 19:43:54 / 7:43 pm (local time epicenter). Exact location of earthquake, -121.982666° West, 37.8258324° North, depth 7.15 km.

Close country/countries that might be effected, United States (c. 310 233 000 pop). Epicenter of the event was 55 km (34 miles) from San Jose (c. 945 900 pop), 39 km (24 miles) from San Francisco (c. 805 200 pop), 25 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 cities/city/towns to hypocenter/epicentrum was Galt, Ripon, Petaluma (min 5000 pop).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. There are an estimated 1,300,000 minor quakes in the world each year. In the past 24 hours, there have been 0, in the last 10 days one, in the past 30 days one and in the last 365 days thirty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel anything?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 2 km ENE of Danville, CA.

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More information

Parameter Value Description
Magnitude 2.89 mb The magnitude for the event.
Longitude -121.982666° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.8258324° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 7.15 km Depth of the event in kilometers.
Place 2km ENE 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 2018-04-21 03:43:54 Time when the event occurred. UTC/GMT
Updated 2018-04-21 03:57:23 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 160 The total number of felt reports
CDI 3.1 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 178 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 56 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.06432 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 57 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 nc73002081 Id of event.
Event Code 73002081 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc73002081, A comma-separated list of event ids that are associated to an event.

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