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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag strikes near Saipan in Northern Mariana Islands


Earthquake location 15.8087S, 146.0694WA light earthquake magnitude 4 (ml/mb) strikes 74 kilometers (46 miles) from Saipan in Northern Mariana Islands on Sunday. Date and time of earthquake in UTC/GMT: 17/01/21 / 2021-01-17 08:02:02 / January 17, 2021 @ 8:02 am. The temblor was detected at 08:02:02 / 8:02 am (local time epicenter). Exact location of earthquake, longitude 146.0694 East, latitude 15.8087 North, depth = 85.7 km. Event ids that are associated to the earthquake: us7000d3fb. Id of event: us7000d3fb. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 85.7 km (53 miles).

Nearby country/countries that might be effected, Northern Mariana Islands (c. 54 000 pop). Earthquake epicenter was 74 km (46 miles) from Saipan (c. 48 200 pop). Nearest cities/city/villages to epicentrum/hypocenter was Saipan (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days eight earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 13,000 light quakes in the world each year.

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 74 km NNE of Saipan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 146.0694° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 15.8087° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 85.7 km Depth of the event in kilometers.
Place 74 km NNE of Saipan, 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 2021-01-17 08:02:02 Time when the event occurred. UTC/GMT
Updated 2021-02-13 10:04:21 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 246 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 0.631 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.73 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 127 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 us7000d3fb Id of event.
Event Code 7000d3fb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000d3fb, A comma-separated list of event ids that are associated to an event.

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