M 7.7 in Northern Mariana Islands on 29 Jul 2016 21:18 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: 7.7M
Depth: 212.43 Km
Event Date: 29 Jul 2016 21:18 UTC
30 Jul 2016 07:18 Local
Exposed Population: No people within 100km
Source: NEIC us100068jg
Inserted at: 29 Jul 2016 21:42 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC n.a 0 0
us100068jg Scaled population (vector) n.a Max wave scenario 0m  
  C1 earthquake n.a Max wave realtime 0m  
  C2 earthquake n.a      
  Country Vulnerability n.a      
  INFORM_normalised n.a      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1135225 0 29 Jul 2016 21:18 7.6M, 209km N/A No people affected (in 100km) 0m (at 00:00) 00:06 GEOFON
1135228 0 29 Jul 2016 21:18 7.7M, 188km N/A No people affected (in 100km) 0m (at 00:00) 00:11 NTWC    
1135231 0 29 Jul 2016 21:18 7.7M, 212.43km 5.99 N/A (in MMI>=VII) 0m (at 00:00) 00:23 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: "31km SSW of Agrihan"

Fault parameters

  • Latitude: 18.515
  • Longitude: 145.529
  • Length: 112 km
  • Width: 31 km
  • Magnitude: 7.7 M

Okada parameters:

  • Slip: 2.9 m
  • Strike: 164 (geogr angle: north=0, south=180)
  • Dip: 25 degree
  • Rake: 90 degree
  • Depth: 212 km

Calculation parameters

  • Calculation space (lon/lat): 135.029, 8.015, 156.029, 29.015
  • Instead of Step -> use Cell size:1.61 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.