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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag strikes near Tomakomai in Japan



Earthquake location 42.7035S, 141.6367WA light earthquake magnitude 4.2 (ml/mb) strikes 7 kilometers (4 miles) from Tomakomai in Japan on Sunday. Exact location of earthquake, 141.6367° East, 42.7035° North, depth 135.62 km. Date and time of earthquake in UTC/GMT: 25/02/17 / 2017-02-25 17:02:30 / February 25, 2017 @ 5:02 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 135.62 km (84 miles) below the earth’s surface. Id of earthquake: us100086tu. Event ids that are associated: us100086tu. The temblor was reported at 02:02:30 / 2:02 am (local time epicenter).

The epicenter was 47 km (29 miles) from Sapporo (c. 1 883 000 pop), 8 km (5 miles) from Tomakomai (c. 174 800 pop), 75 km (46 miles) from Otaru (c. 143 800 pop), 46 km (28 miles) from Ebetsu (c. 134 000 pop), 68 km (42 miles) from Muroran (c. 96 200 pop), 13 km (8 miles) from Chitose (c. 92 900 pop). Country/countries that might be effected, Japan (c. 127 288 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Sunagawa, Yoichi, Otaru (min 5000 pop).

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days three and in the last 365 days twenty-one earthquakes of magnitude 3.0 or greater that have been detected nearby. 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.

Did you feel anything?

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 7 km NNE of Tomakomai, Japan.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 141.6367° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 42.7035° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 135.62 km Depth of the event in kilometers.
Place 7km NNE of Tomakomai, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-02-25 17:02:30 Time when the event occurred. UTC/GMT
Updated 2017-03-10 17:29:50 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 271 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 1.32 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.18 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 79 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 us100086tu Id of event.
Event Code 100086tu An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100086tu, A comma-separated list of event ids that are associated to an event.

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