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Light earthquake: M4.5 quake has struck near Ojiya in Japan

Posted by admin on March 20, 2025 0 Comments

Earthquake location 37.2339S, 138.8377WA light earthquake magnitude 4.5 (ml/mb) has occurred on Thursday, 8 kilometers (5 miles) from Ojiya in Japan. Exact time and date of earthquake 20/03/25 / 2025-03-20 09:15:40 / March 20, 2025 @ 9:15 am UTC/GMT. The earthquake occurred at a depth of 177.58 km (110 miles) below the earth’s surface. Event ids that are associated to the earthquake: us6000pzym. Id of event: us6000pzym. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 09:15:40 / 9:15 am (local time epicenter). Exact location of earthquake, 138.8377° East, 37.2339° North, depth 177.58 km.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Maebashi-shi, Imaichi, Kanekomachi. Epicenter of the earthquake was 76 km (47 miles) from Niigata-shi (c. 505 300 pop), 87 km (54 miles) from Nagano-shi (c. 360 200 pop), 96 km (60 miles) from Maebashi-shi (c. 282 700 pop), 54 km (34 miles) from Jōetsu (c. 204 100 pop), 24 km (15 miles) from Nagaoka (c. 195 300 pop), 29 km (18 miles) from Kashiwazaki (c. 86 200 pop), 44 km (27 miles) from Sanjō (c. 82 900 pop). Nearby country/countries, Japan (c. 127 288 000 pop) (That might be effected).

There are an estimated 13,000 light earthquakes in the world each year. 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 two, in the past 30 days three and in the last 365 days six earthquakes of magnitude 3.0 or greater that was reported nearby.

How would you describe the shaking?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 8 km SSE of Ojiya, Japan. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 138.8377° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.2339° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 177.58 km Depth of the event in kilometers.
Place 8 km SSE of Ojiya, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-03-20 09:15:40 Time when the event occurred. UTC/GMT
Updated 2025-03-20 09:40:02 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 312 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 37 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.854 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.82 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 135 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 us6000pzym Id of event.
Event Code 6000pzym An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000pzym, A comma-separated list of event ids that are associated to an event.

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