M 6.9 in Antarctica on 23 Jan 2021 23:36 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: 6.9M
Depth: 9.58 Km
Event Date: 23 Jan 2021 23:36 UTC
23 Jan 2021 19:36 Local
Exposed Population: No people within 100km
Source: NEIC us7000d2rx
Inserted at: 24 Jan 2021 00:48 UTC
Maximun Wave Height observed: 0.04 m

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0 0 0
us7000d2rx Scaled population (raster) 0 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  C2 shakemap 0.53      
  Country Vulnerability 0      
  INFORM_normalised 1      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1354501 0 23 Jan 2021 23:36 7.3M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:14 NTWC
1354505 0 23 Jan 2021 23:36 7M, 7.76km 4.86 No people affected (in 100km) 0m (at 00:00) 00:19 NEIC
1354516 0 23 Jan 2021 23:36 6.9M, 9.58km 5.18 No people affected (in 100km) 0m (at 00:00) 01:11 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.

Estimated Tsunami affected locations

The maximum observed wave height is 0.04m in Antarctica Base Pr;

Alert Date (UTC) Name Country Wave height (m)

See full locations list (RSS)


Initial conditions

Title: Location at start calculation

Fault parameters

  • Latitude: NaN
  • Longitude: NaN
  • Length: NaN km
  • Width: NaN km
  • Magnitude: NaN M

Okada parameters:

  • Slip: NaN m
  • Strike: NaN ()
  • Dip: NaN degree
  • Rake: NaN degree
  • Depth: NaN km

Calculation parameters

  • Calculation space (lon/lat): -58.494, -64.825, -52.494, -58.825
  • Instead of Step -> use Cell size:.5 minutes

Sea Level

More information

  • Timeline:
    Tsunami calculations performed to this case, click here

  • Montecarlo:
    Tsunami Montecarlo simulation performed to this case, click here

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