Japan's global + mesoscale models
JMA GSM/MSM
Japan Meteorological Agency (JMA) · Japan
Resolution
5–55 km
Run by
JMA (Japan)
Model id
jma_seamless
The Japan Meteorological Agency runs the GSM (global) and MSM (mesoscale) models, blended here. JMA is a world leader in typhoon and monsoon forecasting for the Asia-Pacific region.
For cities across East and South Asia, JMA is a valuable independent voice in the consensus. Elsewhere it can diverge more from the pack — which the agreement score will show you.
Known strengths
Typhoons & monsoonAsia-PacificMesoscale detail
The other models we compare
ECMWF IFS
European Centre (EU)
GFS
NOAA (USA)
ICON
DWD (Germany)
GEM
Env. Canada
ARPEGE/AROME
Météo-France
UKMO
UK Met Office
Want to see how JMA GSM/MSM is performing right now? Open any city page and check the accuracy leaderboard — it ranks all seven models by how close they've actually been for that city over the last 30 days.