M 7.6 in United States from 23 Jan 2018 09:31 UTC to 09:31

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: 7.6M
Depth: 10 Km
Event Date: 23 Jan 2018 09:31 UTC
22 Jan 2018 23:31 Local
Exposed Population: No people within 100km
Source: GEOFON gfz2018boxy
Inserted at: 23 Jan 2018 09:39 UTC
INFORM Coping capacity of the alert score:
1.1 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
GEOFON 0 0.4 0.4
gfz2018boxy Scaled population (vector) 0 Max wave scenario 0m  
  C1 earthquake 1 Max wave realtime 0.45m  
  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
1195180 0.8 23 Jan 2018 09:31 8M, 20km N/A No people affected (in 100km) 0.8m (at 01:32) 00:05 NTWC    
1195183 0.4 23 Jan 2018 09:31 7.6M, 10km N/A No people affected (in 100km) 0.5m (at 01:40) 00:08 GEOFON
1195185 0.8 23 Jan 2018 09:31 8M, 19km N/A No people affected (in 100km) 0.8m (at 01:32) 00:12 PTWC
1195191 1.2 23 Jan 2018 09:31 8.2M, 10km N/A No people affected (in 100km) 1.4m (at 01:16) 00:16 NEIC
1195196 0.9 23 Jan 2018 09:31 7.9M, 10km N/A No people affected (in 100km) 0.9m (at 01:16) 00:43 NEIC
1195199 0.5 23 Jan 2018 09:31 7.9M, 25km 4.92 N/A (in MMI>=VII) 0.5m (at 02:10) 00:48 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

The maximum Wave height is  0.5m in Kaguyak, United States. This height is estimated for 23-Jan-2018 11:11:64.

Alert Date (UTC) Name Country Wave height (m)
23-Jan-2018 11:11:64 Kaguyak United States  0.5
23-Jan-2018 11:25:00 Chiniak United States  0.3
23-Jan-2018 12:44:38 Aleksashkina United States  0.2
23-Jan-2018 12:32:38 Nunamiut United States  0.2
23-Jan-2018 12:23:64 Ouzinkie United States  0.1
23-Jan-2018 12:25:00 Kodiak United States  0.1
23-Jan-2018 12:13:00 Port_Lions United States  0.1
23-Jan-2018 12:29:64 Old_Harbor United States  0.1
23-Jan-2018 11:56:38 Portlock United States  0.1
23-Jan-2018 13:14:38 Cape_Yakataga United States  0.1
23-Jan-2018 11:31:00 Bear_Creek United States  0.1
23-Jan-2018 13:38:38 Ayakulik United States  0.1
23-Jan-2018 12:07:00 San_Juan_Cannery United States  0.1
23-Jan-2018 12:07:00 Port_Ashton United States  0.1
23-Jan-2018 11:32:38 Seward United States  0.1
23-Jan-2018 13:11:64 Nuchek United States  0.0

See full locations list (RSS)


Initial conditions

Title: "M7.6 Gulf of Alaska"

Fault parameters

  • Latitude: 56.14
  • Longitude: -149.1
  • Length: 100 km
  • Width: 28 km
  • Magnitude: 7.6 M

Okada parameters:

  • Slip: 2.5 m
  • Strike: 180 (geogr angle: north=0, south=180)
  • Dip: 45 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -158.1, 47.14, -140.1, 65.14
  • Instead of Step -> use Cell size:1.17 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.