M 5.6 in Japan on 22 Mar 2023 07:37 UTC

Hazard models

Rapid Impact
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: 5.6M
Depth: 35.412 Km
Lat/Lon: 40.3031 , 143.0358
Event Date: 22 Mar 2023 07:37 UTC
22 Mar 2023 17:37 Local
Exposed Population: 80 thousand in MMI III
Source: NEIC us7000jlw8
Inserted at: 22 Mar 2023 07:58 UTC
INFORM Coping capacity of the alert score: 1.1 (Japan)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us7000jlw8 Scaled population (raster) 0  
  C1 shakemap 0  
  C2 shakemap 0  
  Country Vulnerability 0  
  INFORM_normalised 0  
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
1496805 0 22 Mar 2023 07:37 5.6M, 35.412km 3.37 N/A (in MMI>=VII) 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 Japan ,of Tohoku (population 456,453) . 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 1496805 143.036/40.303 5.6 35.4 3.369 22 Mar 2023 08:04 00:27 (new episode)
2 0 1496805 143.036/40.303 5.6 35.4 3.369 22 Mar 2023 09:43 02:06 (upd of #1)
3 0 1496805 143.036/40.303 5.6 35.4 3.369 23 Mar 2023 08:40 1d 01:03 (upd of #2)

Affected Provinces

Intensity Region Province Country Population
Tohoku Japan 460000 people
Hokkaido Japan 1100 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Fudai Iwate Japan Village - 100 km
Shimanokoe Iwate Japan Village - 102 km
Omoto Iwate Japan Village - 104 km
Noda-Tamagawa Iwate Japan Village - 105 km
Kuji Iwate Japan Village - 105 km
Noda Iwate Japan Village - 105 km
Uge Iwate Japan Village - 107 km
Settai Iwate Japan Village - 108 km
Kudschi Iwate Japan Village - 108 km
Otomo Iwate Japan Village - 109 km
Taro Iwate Japan Village - 111 km
Taneichi Iwate Japan Village - 111 km
Numafukuro Iwate Japan Village - 112 km
Mikkamachi Iwate Japan Village - 112 km
Futatsuya Iwate Japan Village - 114 km
Sasasawa Iwate Japan Village - 115 km
Kawajiri Iwate Japan Village - 116 km
Motomura Iwate Japan Village - 116 km
Akedo Iwate Japan Village - 117 km
Iwaizumi Iwate Japan Village - 117 km
Miyako Iwate Japan City 51000 people 118 km
Omoe Iwate Japan Village - 118 km
Ono Iwate Japan Village - 120 km
Kanahama Aomori Japan Village - 121 km
Neichi Iwate Japan Village - 123 km
Tsugaruishi Iwate Japan Village - 124 km
Osawa Iwate Japan Village - 128 km
Tashiro Aomori Japan Village - 129 km
Hachinohe Aomori Japan City 240000 people 131 km
Yamada Iwate Japan Village 20000 people 132 km
Funakoshi Iwate Japan Village - 133 km
Karumai Iwate Japan Village - 134 km
Kuriyama Iwate Japan Village - 135 km
Ichinosawa Aomori Japan Village - 136 km
Ichikawa Aomori Japan Village - 138 km
Toda Iwate Japan Village - 138 km
Esashika Iwate Japan Village - 138 km
Mita Aomori Japan Village - 142 km
Ogida Aomori Japan Village - 144 km
Kenyoshi Aomori Japan Village - 145 km
Sannohe Aomori Japan Village - 147 km
Gonohe Aomori Japan Village - 150 km
Kurauchi Aomori Japan Village - 152 km
Rokkasho Aomori Japan Village - 156 km
Dedo Aomori Japan Village - 160 km
Tono Iwate Japan Village 27000 people 168 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
Hachinohe HHE 46 Mil. Paved Yes 7300 136 km

Ports

Intensity Name LOCODE Country Distance
Fudai Japan 99 km
Miyako JPMYK Japan 117 km
Hachinohe JPHHE Japan 128 km
Yamada Japan 131 km

Dams

Intensity Reservoir Dam Name River Year Distance
Yukiyagawa Yukiyagawa Yukiyagawa 1976 129 km
Tenma Tenma Tsubokawa 1968 176 km

More information

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