M 6.6 in Japan on 10 Nov 2021 15:45 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: 6.6M
Depth: 10 Km
Lat/Lon: 23.5414 , 126.4798
Event Date: 10 Nov 2021 15:45 UTC
10 Nov 2021 23:45 Local
Exposed Population: No people affected in 100km
Source: NEIC us7000fszl
Inserted at: 10 Nov 2021 16:05 UTC
INFORM Coping capacity of the alert score: 1.1 (Japan)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0 0.3 0.3
us7000fszl Scaled population (vector) 0 Max wave alert 0.31m  
  C1 shakemap -0.59 Max wave realtime 0.31m  
  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
1408110 0.2 10 Nov 2021 15:45 6.6M, 10km N/A No people affected (in 100km) 0.2m (at 00:24) 00:14 PTWC
1408111 0.3 10 Nov 2021 15:45 6.6M, 10km N/A No people affected (in 100km) 0.3m (at 00:22) 00:17 NTWC
1408112 0.3 10 Nov 2021 15:45 6.6M, 10km 4.08 N/A (in MMI>=VII) 0.3m (at 00:23) 00:20 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 Japan ,of Okinawa (population 44,211) . The alertlevel for this event is GREEN

Intensity Population
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1408112 23.541/126.48 6.6 10.0 4.022 10 Nov 2021 16:07 00:22 (new episode)
2 0 1408112 23.541/126.48 6.6 10.0 4.022 10 Nov 2021 16:56 01:11 (upd of #1)
3 0 1408112 23.541/126.48 6.6 10.0 4.022 10 Nov 2021 17:49 02:04 (upd of #2)
4 0 1408112 23.541/126.48 6.6 10.0 4.022 11 Nov 2021 15:50 1d 00:04 (upd of #3)
5 0 1408112 23.593/126.448 6.6 12.0 4.085 17 Nov 2021 07:41 6d 15:55 (upd of #4)

Affected Provinces

Intensity Region Province Country Population
Okinawa Japan 44000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Bora Okinawa Japan Village - 170 km
Arasato Okinawa Japan Village - 175 km
Sugama Okinawa Japan Village - 180 km
Hirara Okinawa Japan Village 34000 people 184 km
Ichimasui Okinawa Japan Village - 192 km
Karimata Okinawa Japan Village - 192 km
Kuninaka Okinawa Japan Village - 194 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
Hirara MMY 45 Civ. Paved Yes 6500 183 km
Shimojishima SHI 16 Civ. Paved Yes 9800 197 km

Ports

Intensity Name LOCODE Country Distance
Myako Island Japan 173 km
Hirara Japan 186 km

More information

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