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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4 quake has struck near Honshu in Japan

Earthquake location 40.5216S, 142.127WA light earthquake magnitude 4 (ml/mb) has occurred on Saturday, near the east coast of Honshu, Japan kilometers (0 miles) from Honshu in Japan. Global time and date of event 21/11/20 / 2020-11-21 20:05:59 / November 21, 2020 @ 8:05 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 57.88 km (36 miles). The 4-magnitude earthquake was detected at 20:05:59 / 8:05 pm (local time epicenter). Exact location of earthquake, longitude 142.127 East, latitude 40.5216 North, depth = 57.88 km. All ids that are associated to the event: us6000csf8. Unique identifier: us6000csf8.

Earthquake epicenter was 53 km (33 miles) from Hachinohe (c. 239 000 pop), 65 km (40 miles) from Misawa (c. 42 800 pop), 78 km (49 miles) from Ichinohe (c. 15 800 pop). Closest city/cities/towns to epicentrum/hypocenter was Ichinohe, Misawa, Hachinohe (min 5000 pop). Nearby country/countries that might be effected, Japan (c. 127 288 000 pop).

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. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days nine and in the last 365 days fourty earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: near the east coast of Honshu, Japan. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 142.127° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.5216° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 57.88 km Depth of the event in kilometers.
Place near the east coast of Honshu, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-11-21 20:05:59 Time when the event occurred. UTC/GMT
Updated 2020-12-03 00:24:22 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 246 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 0.851 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.69 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 161 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 us6000csf8 Id of event.
Event Code 6000csf8 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000csf8, A comma-separated list of event ids that are associated to an event.

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