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Minor earthquake, 2.81 mag strikes near Monroe in Washington

Earthquake location 47.8930016S, -121.9971695WA minor earthquake magnitude 2.81 (ml/mb) has struck on Friday, 4 kilometers (2 miles) from Monroe in Washington. Exact time and date of event in UTC/GMT: 21/07/17 / 2017-07-21 09:13:03 / July 21, 2017 @ 9:13 am. The temblor was reported at 01:13:03 / 1:13 am (local time epicenter). Event id: uw61283812. Ids that are associated to the earthquake: uw61283812. Exact location of earthquake, -121.9971695° West, 47.8930016° North, depth 14.35 km. The epicenter of the earthquake was roughly 14.35 km (9 miles) below the earth’s surface.

Nearest cities/city/villages to epicentrum/hypocenter was Enumclaw, Gig Harbor, Milton (min 5000 pop). Country/countries that might be effected, United States (c. 310 233 000 pop). The epicenter was 41 km (25 miles) from Seattle (c. 608 700 pop), 35 km (22 miles) from Bellevue (c. 122 400 pop), 18 km (11 miles) from Everett (c. 103 000 pop), 60 km (37 miles) from Kent (c. 92 400 pop), 48 km (30 miles) from Renton (c. 90 900 pop).

There are an estimated 1,300,000 minor earthquakes in the world each year. In the past 24 hours, there have been 0, in the last 10 days 0, in the past 30 days two and in the last 365 days nineteen earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 4 km NNW of Monroe, Washington.

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More information

Parameter Value Description
Magnitude 2.81 mb The magnitude for the event.
Longitude -121.9971695° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 47.8930016° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 14.35 km Depth of the event in kilometers.
Place 4km NNW of Monroe, Washington Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-07-21 09:13:03 Time when the event occurred. UTC/GMT
Updated 2017-07-21 09:19:23 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 2.2 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 122 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 76 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1778 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.21 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 40 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 uw61283812 Id of event.
Event Code 61283812 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,uw61283812, A comma-separated list of event ids that are associated to an event.

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