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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag strikes near Hitachi in Japan

Earthquake location 36.5439S, 140.6025WA light earthquake magnitude 4.1 (ml/mb) has struck on Saturday, 7 kilometers (4 miles) from Hitachi in Japan. Event ids that are associated to the earthquake: us2000a63g. Id of event: us2000a63g. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, 140.6025° East, 36.5439° North, depth 64.06 km. The 4.1-magnitude earthquake has occurred at 07:55:19 / 7:55 am (local time epicenter). Global date and time of event UTC/GMT: 04/08/17 / 2017-08-04 22:55:19 / August 4, 2017 @ 10:55 pm. The epicenter of the earthquake was roughly 64.06 km (40 miles) below the earth’s surface.

Event epicenter was 64 km (40 miles) from Utsunomiya-shi (c. 449 900 pop), 62 km (38 miles) from Iwaki (c. 357 300 pop), 26 km (16 miles) from Mito-shi (c. 246 500 pop), 8 km (5 miles) from Hitachi (c. 186 300 pop), 59 km (37 miles) from Tsukuba (c. 175 600 pop), 77 km (48 miles) from Oyama (c. 159 900 pop). Close country/countries that might be effected, Japan (c. 127 288 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Fujioka, Nikkō, Koga.

Each year there are an estimated 13,000 light quakes in the world. 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 five, in the past 30 days seven and in the last 365 days one hundred and twenty-three earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 7 km SW of Hitachi, Japan.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 140.6025° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.5439° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 64.06 km Depth of the event in kilometers.
Place 7km SW of Hitachi, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-08-04 22:55:19 Time when the event occurred. UTC/GMT
Updated 2017-08-08 21:31:44 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 Timezone offset from UTC in minutes at the event epicenter.
Felt 7 The total number of felt reports
CDI 3.1 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 261 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 1.331 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.58 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 208 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 us2000a63g Id of event.
Event Code 2000a63g An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000a63g, A comma-separated list of event ids that are associated to an event.

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