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Light earthquake: M4.25 quake has struck near Johannesburg in California

Earthquake location 35.215168S, -117.2795029WA light earthquake with magnitude 4.25 (ml/mb) was detected on Sunday, 37 kilometers (23 miles) from Johannesburg in California. The earthquake was roughly at a depth of 0.65 km (0 miles). All ids that are associated to the event: ci37506472. Unique identifier: ci37506472. Exact time and date of earthquake 27/12/15 / 2015-12-27 18:31:17 / December 27, 2015 @ 6:31 pm UTC/GMT. The temblor was picked up at 10:31:17 / 10:31 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 0.65 km, -117.2795029° West, 35.215168° North.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Piñon Hills, Oak Hills, Phelan. Country/countries that might be effected, United States (c. 310 233 000 pop). Epicenter of the earthquake was 76 km (47 miles) from Victorville (c. 115 900 pop), 88 km (55 miles) from Hesperia (c. 90 200 pop), 80 km (50 miles) from Apple Valley (c. 69 100 pop), 71 km (44 miles) from Adelanto (c. 31 800 pop), 58 km (36 miles) from Ridgecrest (c. 27 600 pop), 43 km (27 miles) from Barstow Heights (c. 24 200 pop).

Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days four and in the last 365 days eleven earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

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. 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: 37 km ESE of Johannesburg, California.

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More information

Parameter Value Description
Magnitude 4.25 mb The magnitude for the event.
Longitude -117.2795029° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 35.215168° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 0.65 km Depth of the event in kilometers.
Place 37km ESE of Johannesburg, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-12-27 18:31:17 Time when the event occurred. UTC/GMT
Updated 2015-12-27 18:44:15 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 113 The total number of felt reports
CDI 3.4 The maximum reported intensity for the event.
MMI 5.79 The maximum estimated instrumental intensity for the event.
Alert Level green The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed 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 316 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ci The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ci, A comma-separated list of network contributors.
Number of Stations Used 91 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1905 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 28 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 ci37506472 Id of event.
Event Code 37506472 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ci37506472, A comma-separated list of event ids that are associated to an event.

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