M 5.7 in Ryukyu Islands, Japan on 18 Sep 2022 08:09 UTC
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: 5.7M
Depth: 10 Km
Lat/Lon: 26.2527 , 126.0142
Event Date: 18 Sep 2022 08:09 UTC
18 Sep 2022 16:09 Local
Exposed Population: Less then 100 people in MMI V
9 thousand in 100km
Source: NEIC us7000i91n
Inserted at: 18 Sep 2022 08:28 UTC
INFORM Coping capacity of the alert score: 1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)
GDACS score
NEIC 0 0
us7000i91n 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
1462694 0 18 Sep 2022 08:09 5.7M, 10km 3.95 less than 100 (in MMI>=VII) 00:18 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 1,242,315) . 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 1462694 26.253/126.014 5.7 10.0 3.951 18 Sep 2022 08:31 00:21 (new episode)
2 0 1462694 26.253/126.014 5.7 10.0 3.951 18 Sep 2022 08:46 00:36 (upd of #1)
3 0 1462694 26.253/126.014 5.7 10.0 3.951 18 Sep 2022 10:15 02:05 (upd of #2)
4 0 1462694 26.253/126.014 5.7 10.0 3.951 19 Sep 2022 08:40 1d 00:30 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
Okinawa Japan 990000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Ohara Okinawa Japan Village - 71 km
Shimajiri Okinawa Japan Village - 79 km
Fuija Okinawa Japan Village - 79 km
Hama Okinawa Japan Village - 126 km
Tokashiku Okinawa Japan Village - 135 km
Chifuwa Okinawa Japan Village - 164 km
Itoman Okinawa Japan Village 56000 people 167 km
Naha Okinawa Japan City 300000 people 168 km
Karimata Okinawa Japan Village - 169 km
Ishimine Okinawa Japan Village - 171 km
Nakaza Okinawa Japan Village - 172 km
Kadena Okinawa Japan Village - 175 km
Hirara Okinawa Japan Village 34000 people 177 km
Ichimasui Okinawa Japan Village - 178 km
Atsuta Okinawa Japan Village - 179 km
Bora Okinawa Japan Village - 179 km
Fusozaki Okinawa Japan Village - 179 km
Kuninaka Okinawa Japan Village - 179 km
Ishikawa Okinawa Japan Village 22000 people 182 km
Arasato Okinawa Japan Village - 183 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
Kumejima UEO 7 Civ. Paved Yes 6500 71 km
Naha OKA 5 Civ. Paved Yes 9800 163 km
Futenma Mcas 75 Mil. Paved Yes 9000 174 km
Kadena AB DNA 45 Mil. Paved Yes 12100 175 km
Hirara MMY 45 Civ. Paved Yes 6500 178 km
Shimojishima SHI 16 Civ. Paved Yes 9800 180 km

Ports

Intensity Name LOCODE Country Distance
Kume Island Japan 74 km
Naha JPNAH Japan 165 km
Hirara Japan 176 km
Myako Island Japan 176 km
Nishihara JPNHR Japan 177 km

Dams

Intensity Reservoir Dam Name River Year Distance
Zukeyama Kurashiki Yonabarugawa 1995 179 km
Okukubi Okukubigawa 2001 193 km

More information

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