M 6.3 in United States on 23 Aug 2018 03:35 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: 6.3M
Depth: 43.91 Km
Event Date: 23 Aug 2018 03:35 UTC
22 Aug 2018 18:35 Local
Exposed Population: About 200 people within 100km
Source: NEIC us1000gfvg
Inserted at: 23 Aug 2018 03:48 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
NEIC 0 0 0
us1000gfvg 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
1225470 0 23 Aug 2018 03:35 6.1M, 56km N/A No people affected (in 100km) 00:07 NTWC    
1225473 0 23 Aug 2018 03:35 6.3M, 43.91km 5.84 N/A (in MMI>=VII) 0m (at 00:00) 00:13 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: "45km SSE of Tanaga Volcano"

Fault parameters

  • Latitude: 51.511
  • Longitude: -177.881
  • Length: 22 km
  • Width: 6 km
  • Magnitude: 6.3 M

Okada parameters:

  • Slip: .6 m
  • Strike: 265 (geogr angle: north=0, south=180)
  • Dip: 15 degree
  • Rake: 90 degree
  • Depth: 44 km

Calculation parameters

  • Calculation space (lon/lat): -179.381, 50.011, -176.381, 53.011
  • Instead of Step -> use Cell size:.19 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.