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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.3 mag, 72 km NW of Ishikawa, Japan

Earthquake location 26.8735S, 127.2897WA light earthquake magnitude 4.3 (ml/mb) has struck on Wednesday, 72 kilometers (45 miles) from Ishikawa in Japan. Exact location of event, depth 83.58 km, 127.2897° East, 26.8735° North. Event id: us7000c6b9. Ids that are associated to the earthquake: us7000c6b9. The temblor was reported at 18:38:22 / 6:38 pm (local time epicenter). Exact time and date of earthquake 21/10/20 / 2020-10-21 18:38:22 / October 21, 2020 @ 6:38 pm UTC/GMT. 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 83.58 km (52 miles).

Nearest cities/city/villages to epicentrum/hypocenter was Itoman, Tomigusuku, Katsuren-haebaru (min 5000 pop). Earthquake epicenter was 83 km (52 miles) from Naha-shi (c. 300 800 pop), 78 km (49 miles) from Okinawa (c. 125 500 pop), 83 km (51 miles) from Ginowan (c. 91 800 pop), 81 km (50 miles) from Gushikawa (c. 65 300 pop), 75 km (46 miles) from Nago (c. 59 600 pop), 91 km (57 miles) from Itoman (c. 57 200 pop). Nearby country/countries that might be effected, Japan (c. 127 288 000 pop).

Every year there are an estimated 13,000 light earthquakes in the world. 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 seventeen 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.

Questions or comments?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 72 km NW of Ishikawa, Japan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 127.2897° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 26.8735° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 83.58 km Depth of the event in kilometers.
Place 72 km NW of Ishikawa, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-10-21 18:38:22 Time when the event occurred. UTC/GMT
Updated 2020-10-28 18:33:17 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 284 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 0.878 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.86 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 79 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 us7000c6b9 Id of event.
Event Code 7000c6b9 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000c6b9, A comma-separated list of event ids that are associated to an event.

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