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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.5 mag, 22 km WNW of Hiroo, Japan


Earthquake location 42.3267S, 143.0352WA light earthquake magnitude 4.5 (ml/mb) has struck on Wednesday, 22 kilometers (14 miles) from Hiroo in Japan. All ids that are associated to the event: us6000q6mb. Unique identifier: us6000q6mb. The earthquake occurred at a depth of 65.147 km (40 miles) below the earth’s surface. Global date and time of event UTC/GMT: 16/04/25 / 2025-04-16 22:16:31 / April 16, 2025 @ 10:16 pm. The temblor was detected at 22:16:31 / 10:16 pm (local time epicenter). Exact location of event, longitude 143.0352 East, latitude 42.3267 North, depth = 65.147 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Country/countries that might be effected, Japan (c. 127 288 000 pop). The epicenter was 67 km (42 miles) from Obihiro (c. 173 900 pop), 75 km (47 miles) from Otofuke (c. 40 900 pop), 55 km (34 miles) from Shizunai-furukawachō (c. 22 400 pop). Nearest cities/city/towns to hypocenter/epicentrum was Otofuke, Obihiro, Shizunai-furukawachō (min 5000 pop).

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

How would you describe the shaking?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 22 km WNW of Hiroo, Japan.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 143.0352° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 42.3267° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 65.147 km Depth of the event in kilometers.
Place 22 km WNW of Hiroo, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-04-16 22:16:31 Time when the event occurred. UTC/GMT
Updated 2025-05-12 00:31:44 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 74 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.324 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.55 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 108 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 us6000q6mb Id of event.
Event Code 6000q6mb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000q6mb, A comma-separated list of event ids that are associated to an event.

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