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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag was detected near Ryukyu Islands, Japan

Earthquake location 25.856S, 128.388WA light earthquake magnitude 4.5 (ml/mb) has struck on Tuesday, Ryukyu Islands, Japan kilometers (0 miles) from Ryukyu Islands, Japan. Global time and date of event 16/10/18 / 2018-10-16 15:15:45 / October 16, 2018 @ 3:15 pm UTC/GMT. The temblor was detected at 15:15:45 / 3:15 pm (local time epicenter). The epicenter was at a depth of 10 km (6 miles). Event id: us1000hehy. Ids that are associated to the earthquake: us1000hehy. Exact location of event, depth 10 km, 128.388° East, 25.856° North. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearby country/countries that might be effected, Japan (c. 127 288 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Nago, Ishikawa, Naha-shi. Earthquake epicenter was 81 km (50 miles) from Naha-shi (c. 300 800 pop), 79 km (49 miles) from Okinawa (c. 125 500 pop), 77 km (48 miles) from Ginowan (c. 91 800 pop), 76 km (47 miles) from Gushikawa (c. 65 300 pop), 93 km (58 miles) from Nago (c. 59 600 pop), 78 km (48 miles) from Itoman (c. 57 200 pop), 80 km (49 miles) from Tomigusuku (c. 55 700 pop).

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

Did you feel the quake?

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 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: Ryukyu Islands, Japan.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 128.388° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 25.856° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place Ryukyu Islands, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-10-16 15:15:45 Time when the event occurred. UTC/GMT
Updated 2018-10-23 16:43:49 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 312 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 0.981 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.62 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 82 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 us1000hehy Id of event.
Event Code 1000hehy An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000hehy, A comma-separated list of event ids that are associated to an event.

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