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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.4 mag strikes near Naha-shi in Japan



Earthquake location 26.6233S, 126.9855WA light earthquake with magnitude 4.4 (ml/mb) was reported 82 kilometers (51 miles) from Naha-shi in Japan on Tuesday. The 4.4-magnitude earthquake has occurred at 08:20:33 / 8:20 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 31/10/17 / 2017-10-31 00:20:33 / October 31, 2017 @ 12:20 am UTC/GMT. Exact location of earthquake, longitude 126.9855 East, latitude 26.6233 North, depth = 106.04 km. The earthquake occurred at a depth of 106.04 km (66 miles) below the earth’s surface. Id of earthquake: us2000bkxu. Event ids that are associated: us2000bkxu.

Nearest cities/city/towns to hypocenter/epicentrum was Katsuren-haebaru, Gushikawa, Itoman (min 5000 pop). Epicenter of the earthquake was 83 km (52 miles) from Naha-shi (c. 300 800 pop), 87 km (54 miles) from Okinawa (c. 125 500 pop), 87 km (54 miles) from Ginowan (c. 91 800 pop), 93 km (57 miles) from Gushikawa (c. 65 300 pop), 88 km (54 miles) from Itoman (c. 57 200 pop), 85 km (53 miles) from Tomigusuku (c. 55 700 pop). Nearby country/countries that might be effected, Japan (c. 127 288 000 pop).

There are an estimated 13,000 light quakes in the world each year. 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 one and in the last 365 days thirteen earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel anything?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 82 km WNW of Naha-shi, Japan.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 126.9855° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 26.6233° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 106.04 km Depth of the event in kilometers.
Place 82km WNW of Naha-shi, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-10-31 00:20:33 Time when the event occurred. UTC/GMT
Updated 2017-11-10 04:45:01 Time when the event was most recently updated. UTC/GMT
Timezone offset 480 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 298 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 1.17 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.93 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 65 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 us2000bkxu Id of event.
Event Code 2000bkxu An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000bkxu, A comma-separated list of event ids that are associated to an event.

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