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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag was detected near Farallon de Pajaros in Northern Mariana Islands



Earthquake location 21.9366S, 143.2749WA light earthquake magnitude 4.2 (ml/mb) strikes 228 km NW of Farallon de Pajaros, Northern Mariana Islands (142 miles) on Sunday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, 143.2749° East, 21.9366° North, depth 189.25 km. Date and time of earthquake in UTC/GMT: 15/07/17 / 2017-07-15 17:29:26 / July 15, 2017 @ 5:29 pm. The temblor was reported at 03:29:26 / 3:29 am (local time epicenter). Id of earthquake: us20009yey. Event ids that are associated: us20009yey. The earthquake was roughly at a depth of 189.25 km (118 miles).

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

Did you feel the quake?

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: 228 km NW of Farallon de Pajaros, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 143.2749° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 21.9366° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 189.25 km Depth of the event in kilometers.
Place 228km NW of Farallon de Pajaros, Northern Mariana Islands Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-07-15 17:29:26 Time when the event occurred. UTC/GMT
Updated 2017-08-12 21:52:19 Time when the event was most recently updated. UTC/GMT
Timezone offset 600 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 reviewed 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 271 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 5.231 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.83 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 134 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us20009yey Id of event.
Event Code 20009yey An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20009yey, A comma-separated list of event ids that are associated to an event.

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