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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.4 mag has occurred near Iwaki in Japan


Earthquake location 36.6036S, 141.7503WA light earthquake with magnitude 4.4 (ml/mb) was detected on Monday, 91 kilometers (57 miles) from Iwaki in Japan. The temblor was reported at 00:43:24 / 12:43 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude 141.7503° East, latitude 36.6036° North, depth = 35 km. Event ids that are associated to the earthquake: us1000g20f. Id of event: us1000g20f. Global time and date of event 29/07/18 / 2018-07-29 15:43:24 / July 29, 2018 @ 3:43 pm UTC/GMT. The epicenter of the earthquake was roughly 35 km (22 miles) below the earth’s surface.

The epicenter was 92 km (57 miles) from Iwaki (c. 357 300 pop), 92 km (57 miles) from Kitaibaraki (c. 50 800 pop), 93 km (58 miles) from Takahagi (c. 33 600 pop). Country/countries that might be effected, Japan (c. 127 288 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Takahagi, Iwaki, Kitaibaraki (min 5000 pop).

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 three, in the last 10 days four, in the past 30 days eleven and in the last 365 days sixty-six earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel it?

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. 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: 91 km ESE of Iwaki, Japan.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 141.7503° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.6036° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 91km ESE of Iwaki, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-07-29 15:43:24 Time when the event occurred. UTC/GMT
Updated 2018-08-06 13:35:53 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 1.477 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.32 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 us1000g20f Id of event.
Event Code 1000g20f An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000g20f, A comma-separated list of event ids that are associated to an event.

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