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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.4 mag strikes near Chichi-shima in Japan

Earthquake location 28.6816S, 143.1687WA light earthquake magnitude 4.4 (ml/mb) strikes 200 km NNE of Chichi-shima, Japan (124 miles) on Wednesday. Unique identifier: us100087qq. Ids that are associated to the event: us100087qq. Exact location, longitude 143.1687° East, latitude 28.6816° North, depth = 32.35 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 03:56:25 / 3:56 am (local time epicenter). The earthquake occurred at a depth of 32.35 km (20 miles). Global time and date of event 28/02/17 / 2017-02-28 17:56:25 / February 28, 2017 @ 5:56 pm UTC/GMT.

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

How would you describe the shaking?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 200 km NNE of Chichi-shima, Japan. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 143.1687° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 28.6816° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 32.35 km Depth of the event in kilometers.
Place 200km NNE of Chichi-shima, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-02-28 17:56:25 Time when the event occurred. UTC/GMT
Updated 2017-03-10 23:02:35 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 1.804 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.13 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 146 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 us100087qq Id of event.
Event Code 100087qq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100087qq, A comma-separated list of event ids that are associated to an event.

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