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Earthquake breaking news, Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.97 quake has struck near Aromas in California


Earthquake location 36.8773346S, -121.6161652WA minor earthquake magnitude 3.97 (ml/mb) has struck on Friday, 2 kilometers (1 miles) from Aromas in California. All ids that are associated to the event: nc72782971. Unique identifier: nc72782971. The epicenter was at a depth of 5.8 km (4 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 31/03/17 / 2017-03-31 10:55:53 / March 31, 2017 @ 10:55 am. The 3.97-magnitude earthquake was detected at 02:55:53 / 2:55 am (local time epicenter). Exact location of earthquake, longitude -121.6161652 West, latitude 36.8773346 North, depth = 5.8 km.

Nearby country/countries, United States (c. 310 233 000 pop) (That might be effected). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Hilmar-Irwin, Union City, Redwood City. The epicenter was 57 km (35 miles) from San Jose (c. 945 900 pop), 82 km (51 miles) from Fremont (c. 214 100 pop), 22 km (14 miles) from Salinas (c. 150 400 pop), 66 km (41 miles) from Sunnyvale (c. 140 100 pop), 61 km (38 miles) from Santa Clara (c. 116 500 pop), 87 km (54 miles) from Redwood City (c. 76 800 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 three, in the past 30 days eight and in the last 365 days fifty-one earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

Questions or comments?

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. 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 ESE of Aromas, California.

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More information

Parameter Value Description
Magnitude 3.97 mb The magnitude for the event.
Longitude -121.6161652° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.8773346° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 5.8 km Depth of the event in kilometers.
Place 2km ESE of Aromas, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-03-31 10:55:53 Time when the event occurred. UTC/GMT
Updated 2017-03-31 11:03:25 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 33 The total number of felt reports
CDI 4.8 The maximum reported intensity for the event.
MMI 4.17 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 258 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 54 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.05443 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.13 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 nc72782971 Id of event.
Event Code 72782971 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72782971, A comma-separated list of event ids that are associated to an event.

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