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Light earthquake: M4.2 quake has struck near Huachichil in Mexico

Earthquake location 24.9472S, -100.8871WA light earthquake magnitude 4.2 (ml/mb) strikes 29 kilometers (18 miles) from Huachichil in Mexico on Tuesday. The 4.2-magnitude earthquake was detected at 19:09:19 / 7:09 pm (local time epicenter). The earthquake occurred at a depth of 10 km (6 miles). Exact time and date of earthquake 21/07/20 / 2020-07-21 19:09:19 / July 21, 2020 @ 7:09 pm UTC/GMT. Event id: us7000asjy. Ids that are associated to the earthquake: us7000asjy. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 10 km, -100.8871° West, 24.9472° North.

Country/countries that might be effected, Mexico (c. 112 469 000 pop). Earthquake epicenter was 54 km (34 miles) from Saltillo (c. 621 300 pop), 92 km (57 miles) from Santa Catarina (c. 254 500 pop), 93 km (58 miles) from San Pedro Garza Garcia (c. 122 000 pop), 66 km (41 miles) from Ramos Arizpe (c. 38 300 pop), 91 km (57 miles) from Santiago (c. 36 000 pop), 56 km (35 miles) from Arteaga (c. 8 400 pop). Nearest cities/city/towns to hypocenter/epicentrum was San Pedro Garza Garcia, Santa Catarina, Santiago (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 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?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 29 km SSW of Huachichil, Mexico. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -100.8871° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 24.9472° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 29 km SSW of Huachichil, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-07-21 19:09:19 Time when the event occurred. UTC/GMT
Updated 2020-07-21 20:46:28 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 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 2.658 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.32 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 132 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 us7000asjy Id of event.
Event Code 7000asjy An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000asjy, A comma-separated list of event ids that are associated to an event.

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