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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.4 mag strikes near Oarai in Japan


Earthquake location 36.4025S, 140.9185WA light earthquake magnitude 4.4 (ml/mb) has struck on Sunday, 30 kilometers (19 miles) from Oarai in Japan. Exact location of event, longitude 140.9185 East, latitude 36.4025 North, depth = 40.71 km. The epicenter was at a depth of 40.71 km (25 miles). The 4.4-magnitude earthquake has occurred at 04:14:15 / 4:14 am (local time epicenter). Global time and date of event 10/02/18 / 2018-02-10 19:14:15 / February 10, 2018 @ 7:14 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us2000d5cw. Event ids that are associated: us2000d5cw.

Close country/countries, Japan (c. 127 288 000 pop) (That might be effected). Epicenter of the earthquake was 94 km (59 miles) from Utsunomiya-shi (c. 449 900 pop), 72 km (45 miles) from Iwaki (c. 357 300 pop), 43 km (27 miles) from Mito-shi (c. 246 500 pop), 33 km (20 miles) from Hitachi (c. 186 300 pop), 77 km (48 miles) from Tsukuba (c. 175 600 pop), 34 km (21 miles) from Hitachi-Naka (c. 156 800 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Mitsukaidō, Utsunomiya-shi, Ōtawara.

Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been three, in the last 10 days four, in the past 30 days six and in the last 365 days ninety-one earthquakes of magnitude 3.0 or greater that was reported nearby. 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 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: 30 km ENE of Oarai, Japan.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 140.9185° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.4025° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 40.71 km Depth of the event in kilometers.
Place 30km ENE of Oarai, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-02-10 19:14:15 Time when the event occurred. UTC/GMT
Updated 2018-02-25 23:07:03 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 Timezone offset from UTC in minutes at the event epicenter.
Felt 2 The total number of felt reports
CDI 3.4 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 299 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 1.467 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.03 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 153 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 us2000d5cw Id of event.
Event Code 2000d5cw An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000d5cw, A comma-separated list of event ids that are associated to an event.

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