M 7.8 in United States on 22 Jul 2020 06:12 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: 7.8M
Depth: 28 Km
Event Date: 22 Jul 2020 06:12 UTC
21 Jul 2020 19:12 Local
Exposed Population: About 1000 people in MMI VI
No people within 100km
Source: NEIC us7000asvb
Inserted at: 22 Jul 2020 07:29 UTC
INFORM Coping capacity of the alert score: 2.2 (United States)
Maximun Wave Height observed: 0.15 m


For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC 0 0.9 0.9
us7000asvb Scaled population (raster) 0 Max wave alert 0.92m  
  C1 earthquake 1 Max wave realtime 0.92m  
  C2 earthquake 0      
  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
1322921 1.1 22 Jul 2020 06:12 7.4M, 13km N/A Few people (in 100km) 1.3m (at 00:46) 00:08 NTWC
1322927 1.3 22 Jul 2020 06:12 7.8M, 10km N/A Few people (in 100km) 1.6m (at 00:56) 00:33 NEIC
1322939 0.9 22 Jul 2020 06:12 7.8M, 28km 7.15 less than 100 (in MMI>=VII) 0.9m (at 00:54) 01:17 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

See full locations list (RSS)

Initial conditions

Title: Location at start calculation

Fault parameters

  • 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): -170.522, 43.03, -146.522, 67.03
  • Instead of Step -> use Cell size:2 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.