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Earthquake breaking news, Minor World Earthquakes Magnitude -3.9

Minor earthquake 3.54 mag, 12 km WSW of Petrolia, CA


Earthquake location 40.2818336S, -124.4196701WA minor earthquake with magnitude 3.54 (ml/mb) was reported 12 kilometers (7 miles) from Petrolia in CA on Saturday. Id of earthquake: nc72946531. Event ids that are associated: nc72946531. The 3.54-magnitude earthquake has occurred at 21:28:22 / 9:28 pm (local time epicenter). Exact location of event, depth 20.08 km, -124.4196701° West, 40.2818336° North. The earthquake occurred at a depth of 20.08 km (12 miles) below the earth’s surface. Global date and time of event UTC/GMT: 31/12/17 / 2017-12-31 05:28:22 / December 31, 2017 @ 5:28 am.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was McKinleyville, Arcata, Bayside. Close country/countries that might be effected, United States (c. 310 233 000 pop). Event epicenter was 62 km (38 miles) from Eureka (c. 27 200 pop), 71 km (44 miles) from Arcata (c. 17 200 pop), 69 km (43 miles) from Bayside (c. 17 100 pop), 79 km (49 miles) from McKinleyville (c. 15 200 pop), 42 km (26 miles) from Fortuna (c. 11 900 pop).

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 six and in the last 365 days fourty-one earthquakes of magnitude 3.0 or greater that have been detected nearby. There are an estimated 130,000 minor quakes in the world each year.

Questions or comments?

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: 12 km WSW of Petrolia, CA.

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More information

Parameter Value Description
Magnitude 3.54 mb The magnitude for the event.
Longitude -124.4196701° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.2818336° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.08 km Depth of the event in kilometers.
Place 12km WSW of Petrolia, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-31 05:28:22 Time when the event occurred. UTC/GMT
Updated 2017-12-31 05:41:57 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 2.7 The maximum reported intensity for the event.
MMI 1.67 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 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 193 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 18 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1202 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.07 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 235 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 nc72946531 Id of event.
Event Code 72946531 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72946531, A comma-separated list of event ids that are associated to an event.

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