GribStream Blog
GFS model now available
GribStream added the Global Forecast System (GFS) with historical forecasts and a demo viewer.
On December 2, 2024, we added the Global Forecast System (GFS) to GribStream.
About GFS
GFS is NOAA's primary global numerical weather prediction model. It runs four times per day (00, 06, 12, 18 UTC) on a 0.25 deg grid and produces forecasts out to 16 days. Output cadence is typically hourly through day 5, 3-hourly to day 10, and 12-hourly to day 16. GFS also provides boundary conditions for other NOAA models and ensemble systems.
Why this matters
GFS is the backbone for many medium-range workflows: global planning, operational forecasting baselines, energy and commodity risk, and long-horizon scenario analysis. Adding it to GribStream means those workflows can use a single API to pull long histories and run consistent backtests.
Using GFS on GribStream
- Pull historical runs for any coordinate set without downloading files.
- Use as-of time-travel to avoid data leakage in backtests.
- Compare successive cycles to measure stability or trend shifts.
- Build derived metrics (e.g., thresholds, accumulations) with expressions and filters.