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Minor earthquake, 3.16 mag was detected near Tamalpais-Homestead Valley in California

Posted by admin on August 22, 2017 0 Comments

Earthquake location 37.7929993S, -122.6031647WA minor earthquake magnitude 3.16 (ml/mb) strikes 11 kilometers (7 miles) from Tamalpais-Homestead Valley in California on Tuesday. Exact time and date of earthquake 22/08/17 / 2017-08-22 13:36:58 / August 22, 2017 @ 1:36 pm UTC/GMT. The 3.16-magnitude earthquake was detected at 05:36:58 / 5:36 am (local time epicenter). Exact location of event, depth 4.91 km, -122.6031647° West, 37.7929993° North. Id of earthquake: nc72874215. Event ids that are associated: nc72874215. The earthquake occurred at a depth of 4.91 km (3 miles) below the earth’s surface.

Close country/countries that might be effected, United States (c. 310 233 000 pop). Event epicenter was 80 km (50 miles) from San Jose (c. 945 900 pop), 16 km (10 miles) from San Francisco (c. 805 200 pop), 29 km (18 miles) from Oakland (c. 390 700 pop), 61 km (38 miles) from Fremont (c. 214 100 pop), 73 km (45 miles) from Santa Rosa (c. 167 800 pop). Nearest cities/city/towns to hypocenter/epicentrum was San Jose, Saint Helena, Saratoga (min 5000 pop).

There are an estimated 130,000 minor earthquakes in the world each year. 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 one, in the past 30 days three and in the last 365 days twenty-two earthquakes of magnitude 3.0 or greater that has struck near.

How would you describe the shaking?

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: 11 km SSW of Tamalpais-Homestead Valley, California. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.16 mb The magnitude for the event.
Longitude -122.6031647° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.7929993° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 4.91 km Depth of the event in kilometers.
Place 11km SSW of Tamalpais-Homestead Valley, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-08-22 13:36:58 Time when the event occurred. UTC/GMT
Updated 2017-08-22 13:40:47 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 20 The total number of felt reports
CDI 3.4 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 160 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 65 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.06694 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 96 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 nc72874215 Id of event.
Event Code 72874215 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72874215, A comma-separated list of event ids that are associated to an event.

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