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Minor earthquake: M3.88 quake has struck near Molalla in Oregon


Earthquake location 45.0488319S, -122.6316681WA minor earthquake with magnitude 3.88 (ml/mb) was reported 11 kilometers (7 miles) from Molalla in Oregon on Wednesday. Event ids that are associated to the earthquake: uw61335997. Id of event: uw61335997. Exact time and date of event in UTC/GMT: 14/12/17 / 2017-12-14 01:24:26 / December 14, 2017 @ 1:24 am. Exact location, longitude -122.6316681° West, latitude 45.0488319° North, depth = 17.28 km. The temblor was picked up at 17:24:26 / 5:24 pm (local time epicenter). The earthquake occurred at a depth of 17.28 km (11 miles) below the earth’s surface.

The epicenter was 53 km (33 miles) from Portland (c. 583 800 pop), 66 km (41 miles) from Vancouver (c. 161 800 pop), 34 km (21 miles) from Salem (c. 154 600 pop), 52 km (33 miles) from Gresham (c. 105 600 pop), 60 km (37 miles) from Hillsboro (c. 91 600 pop), 51 km (31 miles) from Beaverton (c. 89 800 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Battle Ground, Scappoose, Mount Vista. Country/countries that might be effected, United States (c. 310 233 000 pop).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor earthquakes in the world. 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 two earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel anything?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 11 km SSW of Molalla, Oregon.

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More information

Parameter Value Description
Magnitude 3.88 mb The magnitude for the event.
Longitude -122.6316681° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 45.0488319° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 17.28 km Depth of the event in kilometers.
Place 11km SSW of Molalla, Oregon Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-14 01:24:26 Time when the event occurred. UTC/GMT
Updated 2017-12-14 01:35:21 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 130 The total number of felt reports
CDI 3.4 The maximum reported intensity for the event.
MMI 4.11 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 276 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 155 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1909 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.44 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 uw61335997 Id of event.
Event Code 61335997 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,uw61335997, A comma-separated list of event ids that are associated to an event.

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