What Snow Day Alerts does

Enter a ZIP code to see an estimate of snow-day disruption risk for the next five school days. The percentage is a planning signal based on forecast conditions that often lead to closures — especially overnight snow/ice and morning-commute conditions.

How to interpret the percent

70% doesn’t mean “guaranteed closed.” It means conditions look similar to past mornings where closures/delays were more likely. Districts still vary based on plows, buses, staffing, and local road conditions.

• Best time to check: the evening before and again around 4–6 AM.
• Not official: always rely on your district’s alerts for final decisions.
• More detail: see How It Works and FAQ.

What we look at (high level)

• Overnight snow & ice: accumulation and freezing conditions before buses roll.
• Morning timing: conditions between roughly midnight–noon matter most.
• Wind & cold: strong gusts and dangerous cold can push delays/closures.

Data sources & limitations

• Forecast data is provided by modern weather APIs (e.g., Open-Meteo).
• ZIP geocoding uses OpenStreetMap/Nominatim.
• Forecasts can shift quickly; local roads, staffing, and policies can override weather.

Site status: We’re continuously improving accuracy and coverage. If you spot a weird result, hit Contact and tell us your ZIP + date.