GribStream Blog
ECMWF IFS operational now available
GribStream now serves ECMWF IFS Operational (HRES) with 0.25 deg global output and 15-day horizons.
On June 12, 2025, we onboarded ECMWF IFS Operational (HRES) to GribStream.
About IFS Oper
IFS Oper is ECMWF's global medium-range forecasting system. The open-data subset provides a 0.25 deg (~28 km) global grid with four cycles per day (00/06/12/18 UTC). Forecast steps are 3-hourly out to 144 h, then 6-hourly to 360 h (15 days). Fields include temperature, wind, humidity, precipitation, cloud, radiation, pressure, and surface variables.
Why it matters
IFS is a global benchmark for medium-range skill and operational planning. It is widely used for aviation and marine routing, renewable energy forecasting, agriculture, and logistics. Having it in GribStream means you can run consistent backtests and comparisons without managing raw GRIB archives.
Using IFS on GribStream
- Pull historical runs with as-of time travel for proper backtesting.
- Compare deterministic IFS against ensembles like IFS ENS.
- Build derived metrics and filters to search for conditions rather than raw fields.