M 7.9 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: 7.9M
Depth: 10 Km
Event Date: 23 Jan 2018 09:31 UTC
22 Jan 2018 23:31 Local
Exposed Population: No people within 100km
Source: NEIC us2000cmy3
Inserted at: 23 Jan 2018 10:15 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
NEIC 0 0.9 0.9
us2000cmy3 Scaled population (vector) 0 Max wave scenario 1.01m  
  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
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  0.9m in Kaguyak, United States. This height is estimated for 23-Jan-2018 10:47:00.

Alert Date (UTC) Name Country Wave height (m)
23-Jan-2018 10:47:00 Kaguyak United States  0.9
23-Jan-2018 10:59:00 Goddard United States  0.9
23-Jan-2018 11:25:00 Situk United States  0.8
23-Jan-2018 11:15:00 Port_Alexander United States  0.6
23-Jan-2018 11:17:00 Chiniak United States  0.5
23-Jan-2018 12:13:00 Cobol United States  0.5
23-Jan-2018 11:47:00 Mount_Edgecombe United States  0.5
23-Jan-2018 11:47:00 Sitka United States  0.5
23-Jan-2018 11:37:00 Kimshan_Cove United States  0.5
23-Jan-2018 11:37:00 Chichagof United States  0.5
23-Jan-2018 11:33:00 Kodiak United States  0.4
23-Jan-2018 11:35:00 Nunamiut United States  0.3
23-Jan-2018 11:11:00 Port_Hobron United States  0.3
23-Jan-2018 11:45:00 Old_Harbor United States  0.3
23-Jan-2018 13:01:00 Port_Armstrong United States  0.3
23-Jan-2018 12:31:00 Yakutat United States  0.3
23-Jan-2018 12:09:00 Aleksashkina United States  0.3
23-Jan-2018 11:57:00 Portlock United States  0.3
23-Jan-2018 12:35:00 Elfin_Cove United States  0.3
23-Jan-2018 11:57:00 Ouzinkie United States  0.3
23-Jan-2018 12:39:00 Mitrofania United States  0.3
23-Jan-2018 13:19:00 Chilkat United States  0.2
23-Jan-2018 12:03:00 Boswell_Bay United States  0.2
23-Jan-2018 12:25:00 Perryville United States  0.2
23-Jan-2018 14:43:00 Ayakulik United States  0.2
23-Jan-2018 14:03:00 San_Juan_Cannery United States  0.2
23-Jan-2018 14:03:00 Port_Ashton United States  0.2
23-Jan-2018 14:03:00 Crab_Bay United States  0.2
23-Jan-2018 11:45:00 Rowan_Bay United States  0.2
23-Jan-2018 12:17:00 Akhiok United States  0.1
23-Jan-2018 13:13:00 Chignik United States  0.1
23-Jan-2018 13:31:00 Village United States  0.1
23-Jan-2018 11:47:00 Cape_Yakataga United States  0.1
23-Jan-2018 14:27:00 Katalla United States  0.1
23-Jan-2018 13:47:00 Port_Graham United States  0.1
23-Jan-2018 13:23:00 Kanatak United States  0.1
23-Jan-2018 14:23:00 Jakolof_Bay United States  0.1
23-Jan-2018 14:11:00 Nuchek United States  0.1
23-Jan-2018 11:07:00 Lowell_Point United States  0.1
23-Jan-2018 11:07:00 Seward United States  0.1
23-Jan-2018 11:07:00 Bear_Creek United States  0.1
23-Jan-2018 14:25:00 Cordova United States  0.1
23-Jan-2018 14:25:00 Orca United States  0.1
23-Jan-2018 14:41:00 Halibut_Cove United States  0.1
23-Jan-2018 14:37:00 Fritz_Creek United States  0.1
23-Jan-2018 14:09:00 Port_Bailey United States  0.1
23-Jan-2018 12:33:00 Tyee United States  0.1
23-Jan-2018 14:09:00 Karluk United States  0.1
23-Jan-2018 14:45:00 Kachemak United States  0.1
23-Jan-2018 13:37:00 Crystal United States  0.1
23-Jan-2018 14:27:00 Millers_Landing United States  0.1
23-Jan-2018 14:23:00 Diamond_Ridge United States  0.1
23-Jan-2018 14:23:00 Homer United States  0.1
23-Jan-2018 14:46:00 Uyak United States  0.1
23-Jan-2018 14:09:00 Port_Wakefield United States  0.1
23-Jan-2018 12:31:00 English_Bay United States  0.1
23-Jan-2018 14:41:00 Ellamar United States  0.1
23-Jan-2018 14:41:00 Tatitlek United States  0.1
23-Jan-2018 14:21:00 Kachemak_Silo United States  0.1
23-Jan-2018 14:23:00 Latouche United States  0.1
23-Jan-2018 14:29:00 Squaw_Harbor United States  0.1
23-Jan-2018 12:25:00 Port_William United States  0.1
23-Jan-2018 13:59:00 Port_O'Brien United States  0.1
23-Jan-2018 13:47:00 Larsen_Bay United States  0.1
23-Jan-2018 14:45:00 Whitshed United States  0.1
23-Jan-2018 11:49:00 Belkofski United States  0.1
23-Jan-2018 13:57:00 Chenega United States  0.1
23-Jan-2018 14:23:00 Anchor_Point United States  0.1
23-Jan-2018 12:25:00 Seldovia United States  0.1
23-Jan-2018 14:03:00 Sand_Point United States  0.1
23-Jan-2018 14:13:00 Unga United States  0.1

See full locations list (RSS)


Initial conditions

Title: "M8 GULF OF ALASKA"

Fault parameters

  • Latitude: NaN
  • Longitude: NaN
  • Length: 158 km
  • Width: 44 km
  • Magnitude: 8 M

Okada parameters:

  • Slip: 4 m
  • Strike: 180 (geogr angle: north=0, south=180)
  • Dip: 45 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -164.06, 41.05, -134.06, 70
  • Instead of Step -> use Cell size:2.5 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.