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Light earthquake: M4.2 quake has struck near San Francisco del Mar in Mexico



Earthquake location 15.6055S, -94.481WA light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 71 kilometers (44 miles) from San Francisco del Mar in Mexico. The earthquake was roughly at a depth of 33.64 km (21 miles). Exact location of earthquake, longitude -94.481 West, latitude 15.6055 North, depth = 33.64 km. Unique identifier: us2000bl3e. Ids that are associated to the event: us2000bl3e. The 4.2-magnitude earthquake was detected at 15:03:55 / 3:03 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 09/11/17 / 2017-11-09 21:03:55 / November 9, 2017 @ 9:03 pm.

Event epicenter was 84 km (52 miles) from Chahuite (c. 9 800 pop), 86 km (53 miles) from Las Amilpas (c. 8 800 pop), 91 km (56 miles) from San Pedro Tapanatepec (c. 7 200 pop), 82 km (51 miles) from Paredón (c. 6 100 pop), 83 km (52 miles) from San Francisco Ixhuatan (c. 5 700 pop), 86 km (53 miles) from San Mateo del Mar (c. 5 400 pop). Close country/countries that might be effected, Mexico (c. 112 469 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was San Pedro Tapanatepec, San Mateo del Mar, Las Amilpas (min 5000 pop).

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. In the past 24 hours, there have been one, in the last 10 days seven, in the past 30 days fourty and in the last 365 days three hundred and ninety-nine earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Questions or comments?

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: 71 km SSE of San Francisco del Mar, Mexico.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -94.481° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 15.6055° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 33.64 km Depth of the event in kilometers.
Place 71km SSE 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 2017-11-09 21:03:55 Time when the event occurred. UTC/GMT
Updated 2017-11-09 22:40:51 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 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 2.886 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.98 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 206 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 us2000bl3e Id of event.
Event Code 2000bl3e An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000bl3e, A comma-separated list of event ids that are associated to an event.

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