Overall Green Earthquake alert in Mexico on 31 Mar 2021 08:56 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

M 4.75 in Mexico on 31 Mar 2021 08:56 UTC

Hazard models

EQ parameters

Shakemap

Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude:	4.8M
Depth:	19.38 Km
Lat/Lon:	32.3805008 , -115.2463303
Event Date:	31 Mar 2021 08:56 UTC 31 Mar 2021 01:56 Local
Exposed Population:	1.6 million in 100km
Source:	CALTECH ci39596135
Inserted at:	09 Nov 2021 16:01 UTC
INFORM Coping capacity of the alert score:	4.4 (Mexico)
INFORM Coping capacity of the affected contries:	Mexico= 4.4; United States= 2.2

GDACS Score

For more info on GDACS alert score click here.

	Earthquake (Shakemap)		GDACS score
CALTECH	0		0
ci39596135	Scaled population (raster)	0
	C1 shakemap	-0.59
	C2 shakemap	0.53
	Country Vulnerability	0
	INFORM_normalised	0.92

Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1367855		0	31 Mar 2021 08:56	4.75M, 19.38km	4.28	N/A (in MMI>=VII)		223d 07:04	CALTECH

The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.

The episode that has the last updated information.

* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in Mexico ,of Baja California (population 2,761) . The alertlevel for this event is GREEN

Intensity	Population
	no people

Shakemaps Timeline

Shake id #	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
1	1367855	32.38/-115.246	4.2	19.4	4.128	31 Mar 2021 09:06	00:10	(new episode)
2	1367855	32.39/-115.25	4.8	19.2	4.285	31 Mar 2021 09:55	00:59	(upd of #1)
3	1367855	32.39/-115.25	4.8	19.2	4.285	31 Mar 2021 10:06	01:10	(upd of #2)
4	1367855	32.39/-115.25	4.8	19.2	4.285	01 Apr 2021 09:01	1d 00:05	(upd of #3)

Affected Provinces

Intensity	Region Province	Country	Population
	Baja California	Mexico	140000 people

Affected populated places. Areas of interest

Name	Region Province	Country	City class	Population	Distance
Hidalgo	Baja California	Mexico	Village	-	5 km
Ejido Patzcuaro	Baja California	Mexico	Village	-	6 km
Durango	Baja California	Mexico	Village	-	15 km
Guadalupe Victoria	Baja California	Mexico	Village	18000 people	17 km
Ejido Guanajuato	Baja California	Mexico	Village	-	18 km
Polvora	Baja California	Mexico	Village	-	19 km
Sesbania	Baja California	Mexico	Village	-	20 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
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The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.