M 4.4 in Japan from 17 May 2009 22:13 UTC to 22:12

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.

Updated: this report is based on episode 1.

Earthquake Magnitude: 4.4M
Depth: 35 Km
Lat/Lon: 29.6971 , 140.237
Event Date: 17 May 2009 22:12 UTC
18 May 2009 07:12 Local
Exposed Population:
few people within 100km
Source: NEIC us2009gtbt
Inserted at: 19 May 2009 03:08 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
us2009gtbt Scaled population (vector) n.a  
  C1 earthquake n.a  
  C2 earthquake n.a  
  Country Vulnerability n.a  
  INFORM_normalised n.a  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
57522 0.5 17 May 2009 22:12 4.4M, 35km N/A Few people (in 100km) 1d 04:55 NEIC
57868 0.5 17 May 2009 22:13 4.3M, 45.4km N/A Few people (in 100km) 5d 22:57 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.

Exposed population

The earthquake happened off shore.

Affected Provinces

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

More information

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