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Light earthquake 4.1 mag, 35 km E of Dien Bien Phu, Vietnam


Earthquake location 21.3678S, 103.3568WA light earthquake magnitude 4.1 (ml/mb) has occurred on Monday, 35 kilometers (22 miles) from Dien Bien Phu in Vietnam. Exact location, longitude 103.3568° East, latitude 21.3678° North, depth = 10.89 km. The earthquake occurred at a depth of 10.89 km (7 miles). The temblor was reported at 03:14:21 / 3:14 am (local time epicenter). Exact time and date of earthquake 07/01/18 / 2018-01-07 20:14:21 / January 7, 2018 @ 8:14 pm UTC/GMT. Event ids that are associated to the earthquake: us1000c1tb. Id of event: us1000c1tb. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

The epicenter was 35 km (22 miles) from Dien Bien Phu (c. 40 300 pop), 58 km (36 miles) from Sơn La (c. 19 100 pop). Nearby country/countries that might be effected, Vietnam (c. 89 571 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Sơn La, Dien Bien Phu (min 5000 pop).

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

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. 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: 35 km E of Dien Bien Phu, Vietnam.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 103.3568° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 21.3678° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10.89 km Depth of the event in kilometers.
Place 35km E of Dien Bien Phu, Vietnam Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-01-07 20:14:21 Time when the event occurred. UTC/GMT
Updated 2018-01-07 20:58:55 Time when the event was most recently updated. UTC/GMT
Timezone offset 420 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 259 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 0.514 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 89 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 us1000c1tb Id of event.
Event Code 1000c1tb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000c1tb, A comma-separated list of event ids that are associated to an event.

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