M 6.4 in Greece on 12 Oct 2021 09:24 UTC

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: 6.4M
Depth: 10 Km
Event Date: 12 Oct 2021 09:24 UTC
12 Oct 2021 12:24 Local
Exposed Population: About 4000 people in MMI
20 thousand (in MMI>=VII)
Source: NEIC us6000ftxu
Inserted at: 18 Oct 2021 15:18 UTC
INFORM Coping capacity of the alert score:
2.5 (Greece)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)
Tsunami GDACS score
NEIC 0.8 0.1 0.8
us6000ftxu Scaled population (raster) 3.82 Max wave alert 0.13m  
  C1 shakemap -0.59 Max wave realtime 0.13m  
  C2 shakemap 0.53      
  Country Vulnerability 0      
  INFORM_normalised 0.69      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1401763 0.3 12 Oct 2021 09:24 6.6M, 10km N/A 90 thousand (in 100km) 0.3m (at 00:12) 6d 05:54 GEOFON
1401766 0.8 12 Oct 2021 09:24 6.4M, 10km 8.28 20 thousand (in MMI>=VII) 0.1m (at 00:07) 6d 05:54 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.

Tsunami affected locations

The maximum Wave height is  0.1m in Vai, Greece. This height is estimated for 12-Oct-2021 09:31:51.

Alert Date (UTC) Name Country Wave height (m)
12-Oct-2021 09:31:51 Vai Greece  0.1
12-Oct-2021 09:30:74 Kato Zakros Greece  0.1
12-Oct-2021 09:33:13 Palaikastron Greece  0.1
12-Oct-2021 09:49:65 Ayia Marina Greece  0.1
12-Oct-2021 09:49:92 Arkasa Greece  0.1
12-Oct-2021 09:52:36 Siteia Greece  0.1
12-Oct-2021 09:52:36 Ayia Fotia Greece  0.1

See full locations list (RSS)


Initial conditions

Title: ""0 km SSE of Palekastro""

Fault parameters

  • Length: 25 km
  • Width: 7 km
  • Magnitude: 6.4 M

Okada parameters:

  • Slip: .6 m
  • Strike: 184 (geogr angle: north=0, south=180)
  • Dip: 25 degree
  • Rake: 262 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): 24.756, 33.693, 27.756, 36.693
  • Instead of Step -> use Cell size:.25 minutes

Sea Level

More information

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

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