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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.4 mag, 34 km E of Iwaki, Japan

Earthquake location 37.0508S, 141.2757WA light earthquake magnitude 4.4 (ml/mb) has struck on Thursday, 34 kilometers (21 miles) from Iwaki in Japan. The temblor was detected at 10:22:19 / 10:22 am (local time epicenter). The epicenter of the earthquake was roughly 57.99 km (36 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 23/04/20 / 2020-04-23 01:22:19 / April 23, 2020 @ 1:22 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 57.99 km, 141.2757° East, 37.0508° North. Unique identifier: us60009enq. Ids that are associated to the event: us60009enq.

Event epicenter was 35 km (22 miles) from Iwaki (c. 357 300 pop), 88 km (55 miles) from Kōriyama (c. 340 600 pop), 75 km (47 miles) from Hitachi (c. 186 300 pop), 83 km (52 miles) from Sukagawa (c. 68 800 pop), 55 km (34 miles) from Kitaibaraki (c. 50 800 pop), 91 km (56 miles) from Funaishikawa (c. 35 300 pop). Nearest cities/city/towns to hypocenter/epicentrum was Ōmiya, Motomiya, Funaishikawa (min 5000 pop). Close country/countries that might be effected, Japan (c. 127 288 000 pop).

In the past 24 hours, there have been four, in the last 10 days five, in the past 30 days six and in the last 365 days fifty-nine earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year.

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 34 km E of Iwaki, Japan. This information 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 141.2757° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.0508° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 57.99 km Depth of the event in kilometers.
Place 34km E 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 2020-04-23 01:22:19 Time when the event occurred. UTC/GMT
Updated 2020-04-30 22:58:04 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 2.513 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.49 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 116 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 us60009enq Id of event.
Event Code 60009enq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us60009enq, A comma-separated list of event ids that are associated to an event.

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