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What is an Uncertainty Forecast?

Traditional forecasts give you one number. But weather doesn't work that way.

Uncertainty forecast background view
Uncertainty forecast chart showing snowfall predictions
The Problem
Traditional forecasts show a single number: "4 inches of snow" or "High of 45°F." But is that 4 inches a sure thing, or could it be anywhere from 1 to 8 inches? A single number hides the uncertainty that meteorologists actually see.
How It Works
Weather models are run dozens of times with slightly different starting conditions. Each run produces a different forecast. When runs agree, confidence is high. When they spread out, uncertainty is high. This is called ensemble forecasting.
Why It Matters
Knowing the range of possible outcomes helps you make better decisions. If all models agree on 6+ inches of snow, commit to that powder day. If the range is 2-10 inches, maybe have a backup plan.

How TrekWeather Shows Uncertainty

Visual probability bands for every variable, so you can plan with confidence.
Snowfall Ranges
See the full spread of possible snow totals, not just a single guess
Temperature Bands
Know if temperatures are locked in or still uncertain
Wind Variability
Understand when wind forecasts are reliable vs. highly variable
Multiple Models
Compare ECMWF, GFS, and GEM ensemble predictions

Ready to see the full picture?

Stop guessing. Start planning with confidence.

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