Weather is more useful when you know how to read it.
These guides explain what TrekWeather shows, where the numbers come from, and how to turn forecast agreement and disagreement into a more flexible outdoor plan.
Build the whole picture
Read them in order for a practical path from forecast source to trip decision, or jump straight to the question you have today.
01Weather models
Meet GFS, HRRR, GEM, and ECMWF. Learn which systems power TrekWeather’s standard forecast and which appear in Forecast Uncertainty.
Understand why two forecasts for the same mountain can tell different stories.
Read the guide
02Forecast uncertainty
Use ensemble-member spread and GFS, ECMWF, and GEM comparisons to see where possible outcomes cluster and where the forecast remains unsettled.
Turn disagreement into a reason to adjust timing, terrain, or backup plans.
Read the guide
03Lightning Potential
Follow the ingredients behind a thunderstorm setup, including CAPE, Lifted Index, CIN, precipitation, gusts, and direct thunderstorm signals.
Learn what the beta signal can explain, and why it never replaces current conditions.
Read the guideLearn with a real place
Open a forecast, then ask better questions.
Pick a trail, peak, campsite, or coordinate you know. Compare the models, inspect the spread, and focus on the hours when you expect to be most exposed.