Canada · Numerical weather prediction
Canadian GEM model
The Canadian model. A solid third opinion in North America, with a 2.5 km high-resolution nest. Also known as Canadian model, CMC, GDPS, HRDPS.
Run by
Environment and Climate Change Canada
Resolution
~15 km global; 2.5 km HRDPS over Canada
Updates · range
2 per day global · up to 10 days
Where GEM is strong
Winter storms and cold-air outbreaks in North America; HRDPS short-range detail.
Where to be careful
Has a known tendency to over-forecast precipitation in some setups.
How to read the GEM forecast on MeteoStack
On every city page, GEM is one row of the stack: each cell is one hour, coloured by rain, temperature, wind or cloud. Compare its row against the consensus line at the top. If GEM is far from the others, treat its outlier signal with caution, or as an early warning if it is a model that is strong in that situation (see above).