M 4.65 in United States from 22 Sep 2017 19:50 UTC to 19:50

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: 4.7M
Depth: 4.63 Km
Lat/Lon: 40.4823341 , -124.9404984
Event Date: 22 Sep 2017 19:50 UTC
22 Sep 2017 11:50 Local
Exposed Population: About 76000 people within 100km
Source: NCAL SS nc72897031
Inserted at: 22 Sep 2017 19:55 UTC
INFORM Coping capacity of the alert score: 2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NCAL SS 0 0
nc72897031 Scaled population (vector) 0  
  C1 shakemap 0  
  C2 shakemap 0  
  Country Vulnerability 0  
  INFORM_normalised 0  
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1181564 0 22 Sep 2017 19:50 5.8M, 12km N/A No people affected (in 100km) 00:03 NTWC    
1181565 0 22 Sep 2017 19:50 4.65M, 4.63km N/A N/A (in MMI>=VII) 00:04 NCAL SS
1181567 0 22 Sep 2017 19:50 5.56M, 4.63km 1.32 N/A (in MMI>=VII) 00:08 NCAL SS
1181568 0 22 Sep 2017 19:50 5.7M, 9.09km 3.3 N/A (in MMI>=VII) 00:17 NEIC
1181569 0 22 Sep 2017 19:50 5.7M, 15.07km 3.03 N/A (in MMI>=VII) 01:13 NEIC
1181658 0 22 Sep 2017 19:50 5.7M, 11.01km 2.95 N/A (in MMI>=VII) 19:31 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 in unknowed a zone. The alertlevel for this event is GREEN

Intensity Population


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1181565 0/0 N/A N/A N/A 22 Sep 2017 19:56 00:05 (new episode)
2 0 1181567 0/0 N/A N/A N/A 22 Sep 2017 19:59 00:08 (new episode)
3 0 1181567 0/0 N/A N/A N/A 22 Sep 2017 20:01 00:10 (upd of #2)
4 0 1181568 40.442/-126.667 5.7 9.09 3.3 22 Sep 2017 20:10 00:20 (new episode)
5 0 1181568 40.442/-126.667 5.7 9.09 3.3 22 Sep 2017 20:52 01:02 (upd of #4)
6 0 1181569 40.442/-126.667 5.7 9.09 3.3 22 Sep 2017 21:04 01:14 (new episode)
7 0 1181569 40.416/-126.828 5.7 15.07 3.03 22 Sep 2017 21:06 01:16 (upd of #6)
8 0 1181569 40.416/-126.828 5.7 15.07 3.03 22 Sep 2017 21:53 02:03 (upd of #7)
9 0 1181658 40.416/-126.828 5.7 15.07 3.03 23 Sep 2017 15:22 19:31 (new episode)
10 0 1181658 40.414/-126.834 5.7 11.01 2.95 23 Sep 2017 15:24 19:34 (upd of #9)

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.