Overall Green Earthquake alert in Southern Mid-Atlantic Ridge on 17 Aug 2020 11:45 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 5.4 in Southern Mid-Atlantic Ridge on 17 Aug 2020 11:45 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:	5.4M
Depth:	10 Km
Lat/Lon:	-17.549 , -12.9556
Event Date:	17 Aug 2020 11:45 UTC 17 Aug 2020 10:45 Local
Exposed Population:	No people within 100km
Source:	NEIC us6000bfxb
Inserted at:	17 Aug 2020 21:59 UTC
INFORM Coping capacity of the alert score:	1.1 ()

GDACS Score

For more info on GDACS alert score click here.

	Earthquake (Shakemap)		GDACS score
NEIC	0		0
us6000bfxb	Scaled population (raster)	0
	C1 shakemap	-0.59
	C2 shakemap	0.53
	Country Vulnerability	0
	INFORM_normalised	1

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
1327054		0	17 Aug 2020 11:45	5.5M, 10km	N/A	No people affected (in 100km)		00:21	NEIC
1327148		0	17 Aug 2020 11:45	5.4M, 10km	N/A	No people affected (in 100km)		10:14	NEIC

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 unknowed a zone. The alertlevel for this event is GREEN

Intensity	Population

Shakemaps Timeline

Shake id #	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
1	1327054	-17.561/-12.943	5.5	10.0	None	17 Aug 2020 12:07	00:21	(new episode)
2	1327054	-17.561/-12.943	5.5	10.0	None	17 Aug 2020 13:48	02:02	(upd of #1)
3	1327148	-17.549/-12.956	5.4	10.0	None	17 Aug 2020 21:59	10:14	(new episode)
4	1327148	-17.549/-12.956	5.4	10.0	None	18 Aug 2020 11:48	1d 00:02	(upd of #3)

Affected Provinces

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.

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