What Are HDD and CDD in Natural Gas Trading?
Learn how heating and cooling degree days translate temperature forecasts into demand-related indicators for the US natural gas market.
What Are HDD and CDD?Learn US Natural Gas Weather Analytics
Understand the weather metrics and forecast models used to analyze US natural gas demand. These practical guides explain degree days, ensemble forecasts, uncertainty ranges and run-to-run model changes.
Weather Forecast Models: What Natural Gas Traders Should Know
Understand GEFS, ECMWF EPS and long-range CFSv2, and why traders compare models instead of relying on a single forecast.
Weather Forecast ModelsUnderstanding Ensemble Spread and P10-P90
Learn how percentile ranges show forecast uncertainty and why the ensemble mean does not tell the whole story.
Understanding P10-P90How to Read Weather Model Run-to-Run Changes
Learn how to interpret warming and cooling changes between model runs without overreacting to a single update.
Reading Model Run ChangesSee the concepts in live forecasts
Compare the latest GEFS and ECMWF EPS runs, track HDD/CDD changes and monitor ensemble uncertainty.