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Light earthquake: M4.22 quake has struck near The Geysers in CA



Earthquake location 38.7890015S, -122.7456665WA light earthquake with magnitude 4.22 (ml/mb) was detected on Wednesday, 2 kilometers (1 miles) from The Geysers in CA. Id of earthquake: nc72955520. Event ids that are associated: nc72955520, at00p2qls1. Exact time and date of event in UTC/GMT: 18/01/18 / 2018-01-18 05:55:12 / January 18, 2018 @ 5:55 am. Exact location of earthquake, longitude -122.7456665 West, latitude 38.7890015 North, depth = 0.35 km. A tsunami warning has been issued near The Geysers in CA (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 0.35 km (0 miles). The temblor was reported at 21:55:12 / 9:55 pm (local time epicenter).

Closest city/cities/towns to epicentrum/hypocenter was San Rafael, San Anselmo, Davis (min 5000 pop). Close country/countries, United States (c. 310 233 000 pop) (That might be effected). Epicenter of the event was 39 km (24 miles) from Santa Rosa (c. 167 800 pop), 87 km (54 miles) from Vallejo (c. 115 900 pop), 86 km (53 miles) from Fairfield (c. 105 300 pop), 82 km (51 miles) from Vacaville (c. 92 400 pop), 68 km (42 miles) from Napa (c. 76 900 pop), 91 km (57 miles) from Davis (c. 65 600 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days thirty earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 2 km NE of The Geysers, CA.

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More information

Parameter Value Description
Magnitude 4.22 mb The magnitude for the event.
Longitude -122.7456665° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.7890015° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 0.35 km Depth of the event in kilometers.
Place 2km NE of The Geysers, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-01-18 05:55:12 Time when the event occurred. UTC/GMT
Updated 2018-01-18 06:07:37 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 129 The total number of felt reports
CDI 3.4 The maximum reported intensity for the event.
MMI 4.66 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 automatic 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 318 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,at, A comma-separated list of network contributors.
Number of Stations Used 60 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.009054 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 41 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 nc72955520 Id of event.
Event Code 72955520 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72955520,at00p2qls1, A comma-separated list of event ids that are associated to an event.

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