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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.4 mag strikes near Iwo Jima in Japan

Earthquake location 23.3438S, 143.7718WA light earthquake magnitude 4.4 (ml/mb) has struck on Saturday, 294 km ESE of Iwo Jima, Japan (183 miles). The temblor was reported at 02:23:33 / 2:23 am (local time epicenter). Exact location of event, longitude 143.7718 East, latitude 23.3438 North, depth = 50.46 km. Id of earthquake: us1000gg34. Event ids that are associated: us1000gg34. Global date and time of event UTC/GMT: 17/08/18 / 2018-08-17 16:23:33 / August 17, 2018 @ 4:23 pm. The earthquake was roughly at a depth of 50.46 km (31 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been twenty-four, in the last 10 days twenty-four, in the past 30 days twenty-four and in the last 365 days thirty-nine earthquakes of magnitude 3.0 or greater that has struck near. There are an estimated 13,000 light quakes in the world each year.

Did you feel the quake?

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. 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: 294 km ESE of Iwo Jima, Japan.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 143.7718° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 23.3438° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 50.46 km Depth of the event in kilometers.
Place 294km ESE of Iwo Jima, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-08-17 16:23:33 Time when the event occurred. UTC/GMT
Updated 2018-08-30 20:27:31 Time when the event was most recently updated. UTC/GMT
Timezone offset 600 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 4.002 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.75 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 151 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 us1000gg34 Id of event.
Event Code 1000gg34 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000gg34, A comma-separated list of event ids that are associated to an event.

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