M 6.5 in United States from 11 Jan 2022 12:39 UTC to 12:39

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: 6.5M
Depth: 37 Km
Event Date: 11 Jan 2022 12:39 UTC
11 Jan 2022 01:39 Local
Exposed Population: Less then 100 people in MMI V
Few people affected in 100km
Source: PTWC pt22011002
Inserted at: 11 Jan 2022 13:00 UTC
INFORM Coping capacity of the alert score:
2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
PTWC 0 0 0
pt22011002 Scaled population (raster) 0.88 Max wave alert 0m  
  C1 earthquake 1 Max wave realtime 0m  
  C2 earthquake 0      
  Country Vulnerability 0      
  INFORM_normalised 0.65      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1420620 0 11 Jan 2022 12:39 6.5M, 37km 3.36 Few people (in 100km) 0m (at 00:00) 00:18 NTWC
1420622 0 11 Jan 2022 12:39 6.5M, 37km 3.36 less than 100 (in MMI>=VII) 0m (at 00:00) 00:20 PTWC
1420624 0.1 11 Jan 2022 12:39 6.7M, 11.96km 3.36 less than 100 (in MMI>=VII) 0.2m (at 00:17) 00:23 NEIC
1420627 0 11 Jan 2022 12:39 6.5M, 15.58km 5.01 less than 100 (in MMI>=VII) 0.1m (at 00:16) 00:27 NEIC
1420635 0.1 11 Jan 2022 12:39 6.6M, 11.23km 5.07 less than 100 (in MMI>=VII) 0.2m (at 00:16) 00:49 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

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

See full locations list (RSS)


Initial conditions

Title: ""M 6.5, 71 km SE of Nikolski, Alaska""

Fault parameters

  • Latitude: 52.502
  • Longitude: -168.08
  • Length: 28 km
  • Width: 7 km
  • Magnitude: 6.5 M

Okada parameters:

  • Slip: .8 m
  • Strike: 247 (geogr angle: north=0, south=180)
  • Dip: 15 degree
  • Rake: 90 degree
  • Depth: 37 km

Calculation parameters

  • Calculation space (lon/lat): -169.58, 51.002, -166.58, 54.002
  • Instead of Step -> use Cell size:.25 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.