M 6.4 in Philippines on 23 Apr 2019 05:37 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This earthquake is expected to have a medium humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 6.4M
Depth: 54 Km
Event Date: 23 Apr 2019 05:37 UTC
23 Apr 2019 13:37 Local
Exposed Population: About 1000 people in MMI
2730000 people within 100km
Source: NEIC us70003aj3
Inserted at: 24 Apr 2019 05:40 UTC
INFORM Coping capacity of the alert score:
4.2 (Philippines)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 1.1 0 1.1
us70003aj3 Scaled population (raster) 3.01 Max wave alert 0m  
  C1 shakemap 0.43 Max wave realtime 0m  
  C2 shakemap 0.27      
  Country Vulnerability 0      
  INFORM_normalised 0.89      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1257626 0 23 Apr 2019 05:37 6.5M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:06 GEOFON
1257628 0.9 23 Apr 2019 05:37 6.6M, 86.3km N/A 2.7 million (in 100km) 0m (at 00:00) 00:09 PTWC
1257631 0.9 23 Apr 2019 05:37 6.6M, 86km N/A 2.6 million (in 100km) 0m (at 00:00) 00:12 NTWC
1257635 0.3 23 Apr 2019 05:37 6.3M, 70.17km 5.71 N/A (in MMI>=VII) 0m (at 00:00) 00:20 NEIC
1257643 1.1 23 Apr 2019 05:37 6.4M, 54km 6.53 1 thousand (in MMI>=VII) 0m (at 00:00) 1d 00:02 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: ""13km E of Tutubigan""

Fault parameters

  • Latitude: 11.846
  • Longitude: 125.187
  • Length: 25 km
  • Width: 7 km
  • Magnitude: 6.4 M

Okada parameters:

  • Slip: .6 m
  • Strike: 172 (geogr angle: north=0, south=180)
  • Dip: 36 degree
  • Rake: 90 degree
  • Depth: 54 km

Calculation parameters

  • Calculation space (lon/lat): 123.687, 10.346, 126.687, 13.346
  • Instead of Step -> use Cell size:.25 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.