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Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.9 quake has struck near Pagan in Northern Mariana Islands


Earthquake location 18.0965S, 145.5397WA minor earthquake with magnitude 3.9 (ml/mb) was reported 24 km W of Pagan, Northern Mariana Islands (15 miles) on Saturday. The temblor was picked up at 20:48:19 / 8:48 pm (local time epicenter). Global date and time of event UTC/GMT: 21/07/18 / 2018-07-21 10:48:19 / July 21, 2018 @ 10:48 am. Exact location of earthquake, 145.5397° East, 18.0965° North, depth 197.48 km. Id of earthquake: us2000ge97. Event ids that are associated: us2000ge97. The epicenter of the earthquake was roughly 197.48 km (123 miles) below the earth’s surface.

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been five, in the last 10 days eight, in the past 30 days fourteen and in the last 365 days seventy-nine earthquakes of magnitude 3.0 or greater that has occurred nearby.

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 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: 24 km W of Pagan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 3.9 mb The magnitude for the event.
Longitude 145.5397° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.0965° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 197.48 km Depth of the event in kilometers.
Place 24km W of Pagan, 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 2018-07-21 10:48:19 Time when the event occurred. UTC/GMT
Updated 2018-08-18 11:53:59 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 234 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 2.849 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.46 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 148 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 us2000ge97 Id of event.
Event Code 2000ge97 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000ge97, A comma-separated list of event ids that are associated to an event.

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