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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.7 mag was detected near Iwaki in Japan


Earthquake location 36.6601S, 141.8644WA light earthquake with magnitude 4.7 (ml/mb) was reported 97 kilometers (60 miles) from Iwaki in Japan on Monday. Event ids that are associated to the earthquake: us7000d3pm. Id of event: us7000d3pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 17:12:14 / 5:12 pm (local time epicenter). Exact location of event, longitude 141.8644 East, latitude 36.6601 North, depth = 33.16 km. The epicenter of the earthquake was roughly 33.16 km (21 miles) below the earth’s surface. Global date and time of event UTC/GMT: 18/01/21 / 2021-01-18 17:12:14 / January 18, 2021 @ 5:12 pm.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Iwaki. Close country/countries that might be effected, Japan (c. 127 288 000 pop). Epicenter of the earthquake was 97 km (61 miles) from Iwaki (c. 357 300 pop).

Each year there are an estimated 13,000 light quakes in the world. 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 seven and in the last 365 days sixty-eight earthquakes of magnitude 3.0 or greater that was reported nearby.

Did you feel it?

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: 97 km ESE of Iwaki, Japan.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude 141.8644° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.6601° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 33.16 km Depth of the event in kilometers.
Place 97 km ESE of Iwaki, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-01-18 17:12:14 Time when the event occurred. UTC/GMT
Updated 2021-01-27 18:39:19 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 340 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 2.943 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.89 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 136 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 us7000d3pm Id of event.
Event Code 7000d3pm An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000d3pm, A comma-separated list of event ids that are associated to an event.

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