M 6.4 in United States on 12 Aug 2018 14:58 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: 6.4M
Depth: 9.9 Km
Lat/Lon: 69.6239 , -145.2468
Event Date: 12 Aug 2018 14:58 UTC
12 Aug 2018 06:58 Local
Exposed Population: Less then 100 people in MMI V
About 300 people within 100km
Source: ALASKA EC ak20076877
Inserted at: 12 Aug 2018 16:45 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)		 Tsunami GDACS score
ALASKA EC 0 0 0
ak20076877 Scaled population (vector) 0 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  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
1223584 0 12 Aug 2018 14:58 6.4M, 20km N/A Few people (in 100km) 0m (at 00:00) 00:05 NTWC    
1223585 0 12 Aug 2018 14:58 6.5M, 3.4km N/A Few people (in 100km) 0m (at 00:00) 00:06 ALASKA EC
1223588 0 12 Aug 2018 14:58 6.4M, 3.1km 7.74 N/A (in MMI>=VII) 0m (at 00:00) 00:07 ALASKA EC
1223591 0.5 12 Aug 2018 14:58 6.5M, 1.3km 7.74 N/A (in MMI>=VII) 0.5m (at 00:00) 00:13 ALASKA EC
1223594 0 12 Aug 2018 14:58 6.5M, 2.8km 7.83 N/A (in MMI>=VII) 0m (at 00:00) 00:15 ALASKA EC
1223595 0 12 Aug 2018 14:58 6.5M, 0.1km 7.83 N/A (in MMI>=VII) 0m (at 00:00) 00:18 ALASKA EC
1223598 0 12 Aug 2018 14:58 6.4M, 5km 7.76 N/A (in MMI>=VII) 0m (at 00:00) 00:20 ALASKA EC
1223606 0 12 Aug 2018 14:58 6.1M, 9.9km 6.03 N/A (in MMI>=VII) 00:38 ALASKA EC
1223648 0 12 Aug 2018 14:58 6.4M, 9.9km 6.56 N/A (in MMI>=VII) 0m (at 00:00) 01:46 ALASKA EC
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 Alaska. The alertlevel for this event is GREEN

Intensity Population
<1000 people
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1223588 69.699/-145.162 6.5 3.4 7.74 12 Aug 2018 15:06 00:07 (new episode)
2 0 1223588 69.778/-145.125 6.4 2.5 7.74 12 Aug 2018 15:10 00:11 (upd of #1)
3 0 1223591 69.778/-145.125 6.4 2.5 7.74 12 Aug 2018 15:12 00:13 (new episode)
4 0 1223591 69.806/-145.11 6.5 1.3 7.83 12 Aug 2018 15:13 00:14 (upd of #3)
5 0 1223594 69.806/-145.11 6.5 1.3 7.83 12 Aug 2018 15:14 00:15 (new episode)
7 0 1223598 69.795/-145.002 6.5 0.1 7.76 12 Aug 2018 15:19 00:20 (new episode)
8 0 1223598 69.683/-145.546 6.4 0 7.78 12 Aug 2018 15:20 00:21 (upd of #7)
9 0 1223606 69.683/-145.546 6.4 0 7.78 12 Aug 2018 15:37 00:38 (new episode)
10 0 1223606 69.624/-145.247 6.1 9.9 6.75 12 Aug 2018 15:39 00:40 (upd of #9)
11 0 1223606 69.624/-145.247 6.1 9.9 6.75 12 Aug 2018 15:41 00:42 (upd of #10)
12 0 1223648 69.624/-145.247 6.1 9.9 6.75 12 Aug 2018 16:45 01:46 (new episode)
13 0 1223648 69.624/-145.247 6.4 9.9 7.04 12 Aug 2018 16:50 01:51 (upd of #12)

Affected Provinces

Intensity Region Province Country Population
Alaska United States no people
Alaska United States <1000 people
Alaska United States no people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Bullen Alaska United States Village - 87 km

see full list


Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Brown Low Point 2 0 43 km
Flaxman Island FXM unknown 0 71 km
Barter Island BTI 2 Civ. Unpaved Yes 4800 86 km

Ports

Intensity Name LOCODE Country Distance
Kaktovik Wake Island 84 km

More information

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