Overall Green Earthquake alert in South Georgia and the South Sandwich Islands on 05 Sep 2021 09:59 UTC

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:	5.6M
Depth:	22.99 Km
Lat/Lon:	-58.7135 , -25.1981
Event Date:	05 Sep 2021 09:59 UTC 05 Sep 2021 07:59 Local
Exposed Population:	No people affected in 100km
Source:	NEIC us7000f875
Inserted at:	05 Sep 2021 14:00 UTC

GDACS Score

For more info on GDACS alert score click here.

	Earthquake (Shakemap)		GDACS score
NEIC	0		0
us7000f875	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
1395401		0	05 Sep 2021 09:59	5.6M, 18.67km	3.43	No people affected (in 100km)		00:23	NEIC
1395444		0	05 Sep 2021 09:59	5.6M, 22.99km	3.44	No people affected (in 100km)		04:01	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	1395401	-58.711/-25.174	5.6	18.7	3.429	05 Sep 2021 10:21	00:22	(new episode)
2	1395444	-58.711/-25.174	5.6	18.7	3.429	05 Sep 2021 12:04	02:05	(new episode)
3	1395444	-58.714/-25.198	5.6	23.0	3.44	05 Sep 2021 14:02	04:03	(upd of #2)
4	1395444	-58.714/-25.198	5.6	23.0	3.44	06 Sep 2021 10:03	1d 00:04	(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.

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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