M 5.5 in United States on 07 Dec 2021 21:57 UTC

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: 5.5M
Depth: 10 Km
Lat/Lon: 44.3657 , -129.5308
Event Date: 07 Dec 2021 21:57 UTC
07 Dec 2021 12:57 Local
Exposed Population: No people affected in 100km
Source: NEIC us6000ga8s
Inserted at: 07 Dec 2021 22:19 UTC
INFORM Coping capacity of the alert score: 1.1 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us6000ga8s Scaled population (raster) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 1  
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
1414333 0 07 Dec 2021 21:57 5.5M, 11km N/A No people affected (in 100km) 00:08 NTWC
1414344 0 07 Dec 2021 21:57 5.5M, 10km N/A N/A (in MMI>=VII) 00:21 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 1414344 44.366/-129.531 5.5 10.0 None 07 Dec 2021 22:22 00:24 (new episode)
2 0 1414344 44.366/-129.531 5.5 10.0 None 07 Dec 2021 23:10 01:12 (upd of #1)
3 0 1414344 44.366/-129.531 5.5 10.0 None 08 Dec 2021 00:02 02:04 (upd of #2)
4 0 1414344 44.366/-129.531 5.5 10.0 None 08 Dec 2021 22:02 1d 00:04 (upd of #3)
5 0 1414344 44.335/-129.572 5.5 10.0 None 17 Dec 2021 07:46 9d 09:48 (upd of #4)

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.