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Light earthquake: M4.16 quake has struck near Toppenish in Washington


Earthquake location 46.1689987S, -120.5388336WA light earthquake with magnitude 4.16 (ml/mb) was detected on Friday, 29 kilometers (18 miles) from Toppenish in Washington. The earthquake occurred at a depth of 9.05 km (6 miles) below the earth’s surface. The temblor was reported at 20:37:47 / 8:37 pm (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, longitude -120.5388336 West, latitude 46.1689987 North, depth = 9.05 km. All ids that are associated to the event: uw61361706. Unique identifier: uw61361706. Exact time and date of event in UTC/GMT: 30/12/17 / 2017-12-30 04:37:47 / December 30, 2017 @ 4:37 am.

Epicenter of the event was 48 km (30 miles) from Yakima (c. 91 100 pop), 44 km (27 miles) from Sunnyside (c. 15 900 pop), 81 km (50 miles) from The Dalles (c. 13 600 pop), 47 km (29 miles) from West Valley (c. 12 700 pop), 92 km (57 miles) from West Richland (c. 11 800 pop), 50 km (31 miles) from Grandview (c. 10 900 pop). Close country/countries, United States (c. 310 233 000 pop) (That might be effected). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was West Richland, The Dalles, Prosser.

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days seven 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. Every year there are an estimated 13,000 light earthquakes 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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 29 km SW of Toppenish, Washington. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.16 mb The magnitude for the event.
Longitude -120.5388336° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 46.1689987° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 9.05 km Depth of the event in kilometers.
Place 29km SW of Toppenish, Washington Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-30 04:37:47 Time when the event occurred. UTC/GMT
Updated 2017-12-30 04:41:26 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 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 266 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network uw The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,uw, A comma-separated list of network contributors.
Number of Stations Used 38 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1231 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.31 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 58 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type md The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID uw61361706 Id of event.
Event Code 61361706 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,uw61361706, A comma-separated list of event ids that are associated to an event.

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