FLASH REPORT · EQ
M4.9 earthquake — Southern Ibaraki Prefecture
An earthquake occurred at Southern Ibaraki Prefecture. JMA reports magnitude 4.9, a depth of 50 km, maximum observed intensity of Shindo 4. GDACS currently provides a Green alert and rapid-impact estimates.
At a glance
- Occurred
- Sep 28, 2026, 19:45 UTC
- Location
- Southern Ibaraki Prefecture
- Magnitude
- JMA M4.9 · GDACS M4.9
- Depth
- JMA 50 km · GDACS 71 km
- Maximum observed intensity
- JMA Shindo 4
- GDACS alert
- GREEN
What we know
OBSERVED SHAKING — JMA
Japan Meteorological Agency observations
Maximum observed seismic intensity: JMA Shindo 4.
JMA magnitude: 4.9.
JMA depth: 50 km.
ESTIMATED IMPACT — GDACS
Global Disaster Alert and Coordination System
Current GDACS alert: Green.
GDACS rapid-impact intensity geometry is an estimate, not observed JMA shaking.
Report history
-
A newly associated source was added to the report; GDACS changed the alert to Green; GDACS revised event details; GDACS detailed geometry was added or revised.
-
JMA revised earthquake measurements.
-
Flash Report published from JMA earthquake information reporting maximum observed intensity of Shindo 4.
Sources
- Japan Meteorological Agency (JMA)
- Global Disaster Alert and Coordination System (GDACS)
CrisisMap presents source-labelled information and is not the original authority for these measurements.