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Moderate earthquake, 5.17 mag strikes near Petrolia in CA

Earthquake location 40.347332S, -124.4424973WA moderate earthquake with magnitude 5.17 (ml/mb) was reported 14 kilometers (9 miles) from Petrolia in CA on Wednesday. All ids that are associated to the event: at00q7ethv, nc73355700. Unique identifier: nc73355700. Exact location, longitude -124.4424973° West, latitude 40.347332° North, depth = 28.56 km. Exact time and date of event in UTC/GMT: 18/03/20 / 2020-03-18 22:08:21 / March 18, 2020 @ 10:08 pm. The temblor was picked up at 14:08:21 / 2:08 pm (local time epicenter). The earthquake occurred at a depth of 28.56 km (18 miles). A tsunami warning has been issued near Petrolia in CA (Does not indicate if a tsunami actually did or will exist).

Earthquake epicenter was 56 km (35 miles) from Eureka (c. 27 200 pop), 65 km (41 miles) from Arcata (c. 17 200 pop), 64 km (40 miles) from Bayside (c. 17 100 pop), 73 km (45 miles) from McKinleyville (c. 15 200 pop), 37 km (23 miles) from Fortuna (c. 11 900 pop). Nearest cities/city/towns to hypocenter/epicentrum was McKinleyville, Arcata, Bayside (min 5000 pop). Nearby country/countries that might be effected, United States (c. 310 233 000 pop).

In the past 24 hours, there have been one, in the last 10 days seven, in the past 30 days nine and in the last 365 days fifty-three earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 1320 moderate earthquakes in the world. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

Did you feel the quake?

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: 14 km W of Petrolia, CA.

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More information

Parameter Value Description
Magnitude 5.17 mb The magnitude for the event.
Longitude -124.4424973° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.347332° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 28.56 km Depth of the event in kilometers.
Place 14km W 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 2020-03-18 22:08:21 Time when the event occurred. UTC/GMT
Updated 2020-03-18 22:15:09 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI 5.85 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 1 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 411 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 ,at,nc, A comma-separated list of network contributors.
Number of Stations Used 21 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 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 262 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 nc73355700 Id of event.
Event Code 73355700 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00q7ethv,nc73355700, A comma-separated list of event ids that are associated to an event.

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