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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, 70 km S of Itoman, Japan


Earthquake location 25.492S, 127.6203WA light earthquake with magnitude 4.2 (ml/mb) was reported 70 kilometers (43 miles) from Itoman in Japan on Sunday. The 4.2-magnitude earthquake was detected at 10:16:45 / 10:16 am (local time epicenter). The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. Id of earthquake: us6000nhkx. Event ids that are associated: us6000nhkx. Exact location of event, depth 10 km, 127.6203° East, 25.492° North. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 21/07/24 / 2024-07-21 10:16:45 / July 21, 2024 @ 10:16 am.

Nearby country/countries, Japan (c. 127 288 000 pop) (That might be effected). Nearest cities/city/towns to hypocenter/epicentrum was Chatan, Ginowan, Naha-shi (min 5000 pop). Earthquake epicenter was 80 km (50 miles) from Naha-shi (c. 300 800 pop), 87 km (54 miles) from Ginowan (c. 91 800 pop), 71 km (44 miles) from Itoman (c. 57 200 pop), 77 km (48 miles) from Tomigusuku (c. 55 700 pop), 92 km (57 miles) from Chatan (c. 27 800 pop).

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

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 70 km S of Itoman, Japan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 127.6203° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 25.492° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 70 km S of Itoman, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2024-07-21 10:16:45 Time when the event occurred. UTC/GMT
Updated 2024-08-06 04:46:33 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 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 17 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.461 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.25 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 99 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 us6000nhkx Id of event.
Event Code 6000nhkx An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000nhkx, A comma-separated list of event ids that are associated to an event.

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