M 6.3 in United States from 12 Aug 2018 21:15 UTC to 21:15

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: 6.3M
Depth: 8.1 Km
Event Date: 12 Aug 2018 21:15 UTC
12 Aug 2018 13:15 Local
Exposed Population: Less then 100 people in MMI V
About 200 people within 100km
Source: ALASKA EC ak20083478
Inserted at: 12 Aug 2018 21:30 UTC
INFORM Coping capacity of the alert score:
2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
ALASKA EC 0 0 0
ak20083478 Scaled population (vector) 0 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  C2 shakemap 0.53      
  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
1223695 0 12 Aug 2018 21:15 6.1M, 5km N/A Few people (in 100km) 00:05 ALASKA EC
1223696 0 12 Aug 2018 21:15 6.3M, 0.1km 7.67 N/A (in MMI>=VII) 0m (at 00:00) 00:07 ALASKA EC
1223699 0 12 Aug 2018 21:15 6.3M, 5km 7.67 N/A (in MMI>=VII) 0m (at 00:00) 00:09 ALASKA EC
1223700 0 12 Aug 2018 21:15 6.3M, 0.1km 7.72 N/A (in MMI>=VII) 0m (at 00:00) 00:11 ALASKA EC
1223702 0 12 Aug 2018 21:15 6.3M, 8.1km 7.8 N/A (in MMI>=VII) 0m (at 00:00) 00:15 ALASKA EC
1223703 0.5 12 Aug 2018 21:15 6.4M, 0.1km 7.85 N/A (in MMI>=VII) 0.5m (at 00:00) 00:20 ALASKA EC
1223714 0 12 Aug 2018 21:15 6M, 11.7km 5.82 N/A (in MMI>=VII) 00:38 ALASKA EC
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: "65km SSW of Kaktovik"

Fault parameters

  • Latitude: 69.701
  • Longitude: -144.307
  • Length: 22 km
  • Width: 6 km
  • Magnitude: 6.3 M

Okada parameters:

  • Slip: .6 m
  • Strike: 90 (geogr angle: north=0, south=180)
  • Dip: 45 degree
  • Rake: 90 degree
  • Depth: 8 km

Calculation parameters

  • Calculation space (lon/lat): -145.807, 68.201, -142.807, 70
  • 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.