GEM / GDPS

What to inspect

Follow successive runs for the same target date. Compare error, bias and interval coverage on shared stations and dates. A sharper forecast is useful only when its uncertainty remains reliable.

See recap for available station/day coverage

Updates and availability

See issued guidance for available cycles; collection and upstream release times differ

No issue timestamp is exposed by this directory for this product. The linked guidance page carries its own coverage and run information.

Station and neighborhood context

Use the station page to compare diurnal evolution, nearby observations and weather regimes. The linked page contains all available sources; availability varies by station.

How to read the record

Raw models, corrected station products and downscaled grids forecast different things. Market recap shows its decision cutoff, settlement basis and coverage. Missing forecasts are unavailable, never zero. Inclusion in this directory or recap does not imply inclusion in a trading blend.