M 5.5 in United States on 07 Dec 2021 21:30 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: 44.3959 , -129.4693
Event Date: 07 Dec 2021 21:30 UTC
07 Dec 2021 12:30 Local
Exposed Population: No people affected in 100km
Source: NEIC us6000ga8i
Inserted at: 07 Dec 2021 21:51 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
us6000ga8i 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
1414327 0 07 Dec 2021 21:30 5.3M, 11km N/A No people affected (in 100km) 00:08 NTWC
1414331 0 07 Dec 2021 21:30 5.5M, 10km N/A No people affected (in 100km) 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 1414331 44.396/-129.469 5.5 10.0 None 07 Dec 2021 21:54 00:24 (new episode)
2 0 1414331 44.396/-129.469 5.5 10.0 None 07 Dec 2021 22:39 01:09 (upd of #1)
3 0 1414331 44.396/-129.469 5.5 10.0 None 07 Dec 2021 23:35 02:05 (upd of #2)
4 0 1414331 44.396/-129.469 5.5 10.0 None 08 Dec 2021 21:35 1d 00:05 (upd of #3)
5 0 1414331 44.387/-129.537 5.5 10.0 None 17 Dec 2021 07:45 9d 10:15 (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.