M 6.4 in China on 06 Feb 2018 15:50 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: 9.45 Km
Event Date: 06 Feb 2018 15:50 UTC
Exposed Population: 7260000 people within 100km
Source: NEIC us1000chhc
Inserted at: 06 Feb 2018 16:12 UTC
INFORM Coping capacity of the alert score: 3.6 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)
Tsunami GDACS score
NEIC 0.8 0.1 0.8
us1000chhc Scaled population (vector) 0 Max wave scenario 0.46m  
  C1 shakemap 0 Max wave realtime 0.13m  
  C2 shakemap 0      
  Country Vulnerability 0      
  INFORM_normalised 0      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1197605 0.8 06 Feb 2018 15:50 6.4M, 9.45km 7.53 7.3 million 0.1m (at 00:14) 00:21 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
* 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 Tsunami wave height is  0.1m in Ta-shan, Taiwan. This height is estimated for 6-Feb-2018 16:04:43.

Alert Date (UTC) Name Country Tsunami wave height (m)
6-Feb-2018 16:04:43 Ta-shan Taiwan  0.1
6-Feb-2018 16:05:06 Hsin-ch'eng Taiwan  0.1
6-Feb-2018 16:05:06 T'ieh-chia-lung-she Taiwan  0.1
6-Feb-2018 16:08:53 Hua-lien Taiwan  0.1
6-Feb-2018 16:43:15 Feng-pin Taiwan  0.1
6-Feb-2018 15:53:92 Ao-hua Taiwan  0.1
6-Feb-2018 16:12:27 Nan-ao Taiwan  0.1
6-Feb-2018 16:51:51 San_Hsien_Tai Taiwan  0.1
6-Feb-2018 16:51:51 Wu-shih_Pi Taiwan  0.1
6-Feb-2018 16:11:88 Chia-lu-lan Taiwan  0.1
6-Feb-2018 16:17:94 Su-ao Taiwan  0.1

See full locations list (RSS)


Initial conditions

Title: "21km NNE of Hualian"

Fault parameters

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

Okada parameters:

  • Slip: .6 m
  • Strike: 262 (geogr angle: north=0, south=180)
  • Dip: 14 degree
  • Rake: 90 degree
  • Depth: 9 km

Calculation parameters

  • Calculation space (lon/lat): 120.18, 22.658, 123.18, 25.658
  • Instead of Step -> use Cell size:.25 minutes

Sea Level

More information

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