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Earthquake breaking news, Minor World Earthquakes Magnitude -3.9

Minor earthquake 3.88 mag, 9 km NNE of Alum Rock, CA

Earthquake location 37.4329987S, -121.7764969WA minor earthquake with magnitude 3.88 (ml/mb) was reported 9 kilometers (6 miles) from Alum Rock in CA on Monday. Id of earthquake: nc73000196. Event ids that are associated: nc73000196. Exact location of event, longitude -121.7764969 West, latitude 37.4329987 North, depth = 8.34 km. The 3.88-magnitude earthquake has occurred at 08:39:26 / 8:39 am (local time epicenter). The earthquake occurred at a depth of 8.34 km (5 miles). Exact time and date of event in UTC/GMT: 16/04/18 / 2018-04-16 16:39:26 / April 16, 2018 @ 4:39 pm.

Country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Delhi, Larkspur, Corte Madera (min 5000 pop). Earthquake epicenter was 15 km (9 miles) from San Jose (c. 945 900 pop), 68 km (42 miles) from San Francisco (c. 805 200 pop), 60 km (37 miles) from Oakland (c. 390 700 pop), 72 km (45 miles) from Stockton (c. 291 700 pop), 23 km (14 miles) from Fremont (c. 214 100 pop), 72 km (45 miles) from Modesto (c. 201 200 pop).

Each year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days five and in the last 365 days sixty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel it?

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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 9 km NNE of Alum Rock, CA. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.88 mb The magnitude for the event.
Longitude -121.7764969° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.4329987° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8.34 km Depth of the event in kilometers.
Place 9km NNE of Alum Rock, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-04-16 16:39:26 Time when the event occurred. UTC/GMT
Updated 2018-04-16 16:44:26 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 37 The total number of felt reports
CDI 3.4 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 244 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 83 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.02571 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.06 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 38 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID nc73000196 Id of event.
Event Code 73000196 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc73000196, A comma-separated list of event ids that are associated to an event.

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