M 6 in Japan on 28 Mar 2023 09:18 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: 6.0M
Depth: 34 Km
Lat/Lon: 41.148 , 142.805
Event Date: 28 Mar 2023 09:18 UTC
28 Mar 2023 19:18 Local
Exposed Population: 30 thousand in MMI IV
Source: NEIC us6000k09q
Inserted at: 28 Mar 2023 10:35 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
us6000k09q 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
1497767 0 28 Mar 2023 09:18 6.2M, 30.947km 3.91 N/A (in MMI>=VII) 0m (at 00:00) 00:22 NEIC
1497771 0 28 Mar 2023 09:18 6M, 34km 3.77 N/A (in MMI>=VII) 01:17 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 Hokkaido (population 5,808,054) . 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 1497767 142.799/41.147 6.2 30.9 3.91 28 Mar 2023 09:45 00:26 (new episode)
2 0 1497771 142.805/41.148 6 34 3.768 28 Mar 2023 10:40 01:22 (new episode)
3 0 1497771 142.805/41.148 6 34 3.768 28 Mar 2023 11:24 02:05 (upd of #2)
4 0 1497771 142.805/41.148 6 34 3.768 29 Mar 2023 09:40 1d 00:21 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
Hokkaido Japan 35000 people
Tohoku Japan 290000 people
Hokkaido Japan 4500 people
Tohoku Japan 5800 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Erimo Hokkaido Japan Village - 95 km
Horoizumi Hokkaido Japan Village - 101 km
Chipira Hokkaido Japan Village - 105 km
Kurambetsu Hokkaido Japan Village - 105 km
Samani Hokkaido Japan Village - 110 km
Urakawa Hokkaido Japan Village - 112 km
Nishicha Hokkaido Japan Village - 114 km
Ogifushi Hokkaido Japan Village - 117 km
Shiriya Aomori Japan Village - 117 km
Kodanosawa Aomori Japan Village - 118 km
Tomari Aomori Japan Village - 119 km
Sarugamori Aomori Japan Village - 119 km
Dedo Aomori Japan Village - 121 km
Rokkasho Aomori Japan Village - 123 km
Kerimabu Hokkaido Japan Village - 123 km
Kawajiri Iwate Japan Village - 123 km
Kanahama Aomori Japan Village - 124 km
Kurauchi Aomori Japan Village - 124 km
Taneichi Iwate Japan Village - 125 km
Utabue Hokkaido Japan Village - 125 km
Tanichito Aomori Japan Village - 128 km
Chikagawa Aomori Japan Village - 128 km
Uge Iwate Japan Village - 128 km
Hachinohe Aomori Japan City 240000 people 128 km
Ichikawa Aomori Japan Village - 129 km
Mena Aomori Japan Village - 130 km
Yokohama Aomori Japan Village - 130 km
Ogara Aomori Japan Village - 132 km
Hiroo Hokkaido Japan Village - 133 km
Higashi-shizunai Hokkaido Japan Village - 134 km
Tanabu Aomori Japan Village - 134 km
Akedo Iwate Japan Village - 134 km
Ohata Aomori Japan Village - 140 km
Niikappu Hokkaido Japan Village - 141 km
Jogasawa Aomori Japan Village - 142 km
Toyoura Hokkaido Japan Village - 236 km
Katano Akita Japan Village - 245 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
Misawa Naf MSJ 36 Mil. Paved Yes 10000 130 km
Hachinohe HHE 46 Mil. Paved Yes 7300 131 km

Ports

Intensity Name LOCODE Country Distance
Samani JPSAM Japan 109 km
Hachinohe JPHHE Japan 126 km
Ominato JPOMT Japan 137 km

Nuclear plants

Intensity Name Country Reactors Distance
HIGASHI DORI JAPAN 1 126 km

More information

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