M 6.4 in Philippines on 01 Aug 2020 17:09 UTC

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: 479.56 Km
Event Date: 01 Aug 2020 17:09 UTC
02 Aug 2020 01:09 Local
Exposed Population:
5720000 people within 100km
Source: NEIC us6000b80p
Inserted at: 01 Aug 2020 17:28 UTC
INFORM Coping capacity of the alert score: 4.2 (Philippines)


For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC 0 0 0
us6000b80p Scaled population (vector) 0 Max wave alert 0m  
  C1 earthquake 1 Max wave realtime 0m  
  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
1324413 0 01 Aug 2020 17:09 6.4M, 479.56km N/A 5.7 million 0m (at 00:00) 00:19 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

No content available

Alert Date (UTC) Name Country Tsunami wave height (m)

See full locations list (RSS)

Initial conditions

Title: ""10 km WSW of Polloc""

Fault parameters

  • Length: 25 km
  • Width: 7 km
  • Magnitude: 6.4 M

Okada parameters:

  • Slip: .6 m
  • Strike: 175 (geogr angle: north=0, south=180)
  • Dip: 51 degree
  • Rake: 90 degree
  • Depth: 480 km

Calculation parameters

  • Calculation space (lon/lat): 122.642, 5.804, 125.642, 8.804
  • Instead of Step -> use Cell size:.25 minutes

Sea Level

More information

  • Timeline:
    Tsunami calculations performed to this case, click here

  • Montecarlo:
    Tsunami Montecarlo simulation performed to this case, click here

For a full list of available products related to this event, please refer to the GDACS Resources page.