M 6.4 in United States on 12 Aug 2018 14:58 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: 6.4M
Depth: 9.9 Km
Event Date: 12 Aug 2018 14:58 UTC
12 Aug 2018 06:58 Local
Exposed Population: Less then 100 people in MMI V
About 300 people within 100km
Source: ALASKA EC ak20076877
Inserted at: 12 Aug 2018 16:45 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
ak20076877 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
1223584 0 12 Aug 2018 14:58 6.4M, 20km N/A Few people (in 100km) 0m (at 00:00) 00:05 NTWC    
1223585 0 12 Aug 2018 14:58 6.5M, 3.4km N/A Few people (in 100km) 0m (at 00:00) 00:06 ALASKA EC
1223588 0 12 Aug 2018 14:58 6.4M, 3.1km 7.74 N/A (in MMI>=VII) 0m (at 00:00) 00:07 ALASKA EC
1223591 0.5 12 Aug 2018 14:58 6.5M, 1.3km 7.74 N/A (in MMI>=VII) 0.5m (at 00:00) 00:13 ALASKA EC
1223594 0 12 Aug 2018 14:58 6.5M, 2.8km 7.83 N/A (in MMI>=VII) 0m (at 00:00) 00:15 ALASKA EC
1223595 0 12 Aug 2018 14:58 6.5M, 0.1km 7.83 N/A (in MMI>=VII) 0m (at 00:00) 00:18 ALASKA EC
1223598 0 12 Aug 2018 14:58 6.4M, 5km 7.76 N/A (in MMI>=VII) 0m (at 00:00) 00:20 ALASKA EC
1223606 0 12 Aug 2018 14:58 6.1M, 9.9km 6.03 N/A (in MMI>=VII) 00:38 ALASKA EC
1223648 0 12 Aug 2018 14:58 6.4M, 9.9km 6.56 N/A (in MMI>=VII) 0m (at 00:00) 01:46 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: "64km SW of Kaktovik"

Fault parameters

  • Latitude: 69.624
  • Longitude: -145.247
  • Length: 25 km
  • Width: 7 km
  • Magnitude: 6.4 M

Okada parameters:

  • Slip: .6 m
  • Strike: 90 (geogr angle: north=0, south=180)
  • Dip: 45 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -146.747, 68.124, -143.747, 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.