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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.4 mag strikes near Ohara in Japan


Earthquake location 35.1859S, 140.7474WA light earthquake magnitude 4.4 (ml/mb) has occurred on Monday, 33 kilometers (21 miles) from Ohara in Japan. The 4.4-magnitude earthquake has occurred at 22:54:37 / 10:54 pm (local time epicenter). Exact location of earthquake, 140.7474° East, 35.1859° North, depth 46.45 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 09/07/18 / 2018-07-09 13:54:37 / July 9, 2018 @ 1:54 pm. The earthquake occurred at a depth of 46.45 km (29 miles) below the earth’s surface. Event id: us2000g43v. Ids that are associated to the earthquake: us2000g43v.

Close country/countries that might be effected, Japan (c. 127 288 000 pop). The epicenter was 73 km (46 miles) from Chiba (c. 919 700 pop), 89 km (55 miles) from Funabashi (c. 560 700 pop), 71 km (44 miles) from Ichihara (c. 283 500 pop), 75 km (47 miles) from Sakura (c. 182 500 pop), 95 km (59 miles) from Urayasu (c. 143 800 pop), 78 km (48 miles) from Kisarazu (c. 122 500 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Urayasu, Ryūgasaki, Inashiki.

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

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. 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: 33 km ESE of Ohara, Japan.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 140.7474° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 35.1859° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 46.45 km Depth of the event in kilometers.
Place 33km ESE of Ohara, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-07-09 13:54:37 Time when the event occurred. UTC/GMT
Updated 2018-07-17 21:20:39 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 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 2.167 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.38 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 171 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 us2000g43v Id of event.
Event Code 2000g43v An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000g43v, A comma-separated list of event ids that are associated to an event.

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