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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.4 mag, 49 km S of San Francisco del Mar, Mexico

Earthquake location 15.7834S, -94.6389WA light earthquake with magnitude 4.4 (ml/mb) was detected on Thursday, 49 kilometers (30 miles) from San Francisco del Mar in Mexico. The epicenter was at a depth of 28.34 km (18 miles). Exact time and date of event in UTC/GMT: 04/01/18 / 2018-01-04 16:09:48 / January 4, 2018 @ 4:09 pm. Id of earthquake: us1000c0qh. Event ids that are associated: us1000c0qh. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.4-magnitude earthquake has occurred at 10:09:48 / 10:09 am (local time epicenter). Exact location of earthquake, -94.6389° West, 15.7834° North, depth 28.34 km.

Close country/countries that might be effected, Mexico (c. 112 469 000 pop). Epicenter of the earthquake was 75 km (46 miles) from Salina Cruz (c. 73 600 pop), 83 km (52 miles) from Juchitán de Zaragoza (c. 67 600 pop), 88 km (55 miles) from Santo Domingo Tehuantepec (c. 37 400 pop), 94 km (58 miles) from Arriaga (c. 22 800 pop), 79 km (49 miles) from Unión Hidalgo (c. 12 700 pop), 75 km (47 miles) from Chahuite (c. 9 800 pop). Nearest cities/city/villages to epicentrum/hypocenter was Arriaga, Asunción Ixtaltepec, El Espinal (min 5000 pop).

In the past 24 hours, there have been one, in the last 10 days six, in the past 30 days ten and in the last 365 days four hundred and fifteen earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 49 km S of San Francisco del Mar, Mexico.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -94.6389° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 15.7834° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 28.34 km Depth of the event in kilometers.
Place 49km S of San Francisco del Mar, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-01-04 16:09:48 Time when the event occurred. UTC/GMT
Updated 2018-01-05 21:23:20 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 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 298 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 2.456 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.85 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 176 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 us1000c0qh Id of event.
Event Code 1000c0qh An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000c0qh, A comma-separated list of event ids that are associated to an event.

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