A snow day predictor, rebuilt on data anyone can check.
Free government forecasts, read the same way every night, with the reasons behind every number.
Why this exists
Snow day predictors have been around for years, and most work the same way: a percentage appears, pitched at kids, with nothing behind it you can inspect. Ask how the number was reached and the answer is a secret algorithm. Ask whether it has ever been right and there's no answer at all.
The idea is sound, though. Parents, teachers, and school staff need to know the night before whether tomorrow is happening, and the forecast data to answer it is published free by two national weather agencies.
So we rebuilt Snow Day Predictor from the data up. Forecasts come from the National Weather Service and NOAA's National Blend of Models in the US, and Environment and Climate Change Canada north of the border. Every prediction shows the factors behind it and is saved as published, so it can be checked against what schools announced. The method is public too.
The name changed to Snow Brief because the product did. A brief is what you want at 5:40 AM: short, local, and clear about what it doesn't know.
What to expect
- A percentage is a chance
A 78% chance of closure means about one morning in five that looks like this doesn't close. We never write it as a sure thing.
- No claims we can't show
No accuracy figure until a season of results backs one up. The accuracy page says how we'll check it.
- Independent
Snow Brief doesn't speak for any school, district, or board. When yours announces its call, that's the answer.
- Not a toy
No snowflake emoji or countdown clocks. People are planning a morning around this.
Get in touch
Something wrong, or a school we should cover? Tell us when a brief got your morning wrong, or which district or board you'd like to find by name.