M 4.53 in United States on 25 Jul 2018 05:06 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: 4.5M
Depth: 10.59 Km
Lat/Lon: 40.3851667 , -125.0523333
Event Date: 25 Jul 2018 05:06 UTC
24 Jul 2018 21:06 Local
Exposed Population: 100000 people within 100km
Source: NCAL SS nc73055086
Inserted at: 25 Jul 2018 18:03 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
nc73055086 Scaled population (vector) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 0.65  
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
1221176 0 25 Jul 2018 05:06 4.54M, 0.15km 3.08 N/A (in MMI>=VII) 00:07 NCAL SS
1221178 0 25 Jul 2018 05:06 4.53M, 0.15km 2.99 N/A (in MMI>=VII) 00:23 NCAL SS
1221277 0 25 Jul 2018 05:06 4.53M, 10.59km 3 N/A (in MMI>=VII) 12:57 NCAL SS
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 United States ,of California (population 269) . The alertlevel for this event is GREEN

Intensity Population
no people
23000 people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1221176 0/0 N/A N/A N/A 25 Jul 2018 05:13 00:07 (new episode)
2 0 1221176 0/0 N/A N/A N/A 25 Jul 2018 05:14 00:08 (upd of #1)
3 0 1221176 40.38/-125.074 4.54 0.15 2.68 25 Jul 2018 05:16 00:10 (upd of #2)
4 0 1221178 40.38/-125.074 4.54 0.15 2.68 25 Jul 2018 05:29 00:23 (new episode)
5 0 1221178 40.38/-125.074 4.54 0.15 2.68 25 Jul 2018 05:30 00:24 (upd of #4)
6 0 1221178 40.38/-125.074 4.53 0.15 3.25 25 Jul 2018 06:08 01:02 (upd of #5)
7 0 1221178 40.38/-125.074 4.53 0.15 3.27 25 Jul 2018 11:07 06:01 (upd of #6)
8 0 1221277 40.38/-125.074 4.53 0.15 3.27 25 Jul 2018 18:03 12:57 (new episode)
9 0 1221277 40.38/-125.074 4.53 0.15 3.27 25 Jul 2018 18:04 12:58 (upd of #8)
10 0 1221277 40.385/-125.052 4.53 10.59 3.25 26 Jul 2018 16:02 1d 10:56 (upd of #9)

Affected Provinces

Intensity Region Province Country Population
California United States <1000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Petrolia California United States Village - 68 km

see full list


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.