Accuracy & Data Sources

This website uses structured weather data obtained through licensed or publicly available application programming interfaces (APIs) provided by recognized meteorological and forecast data services. 

These sources may include national weather agencies and reputable commercial weather data providers. API integrations are used to retrieve current and forecast-based variables such as temperature, snowfall projections, precipitation probability, and severe weather indicators.

Using official API data improves reliability, but it does not eliminate uncertainty. Weather forecasting is inherently probabilistic, and real-world outcomes can differ from modeled projections due to rapidly changing atmospheric conditions, localized effects, reporting delays, and forecast model limitations.

Calculator outputs and probability estimates are generated by applying transparent rule-based or statistical logic to incoming data signals. These outputs are automated interpretations, not official determinations. 

Institutional decisions such as school closures, delays, or safety advisories are made using additional operational factors that are not available through public data feeds, including transportation readiness, staffing levels, infrastructure conditions, and local policy thresholds.

Important limitations to understand:

• Forecast inputs may be revised by the original data provider after publication
• API feeds can experience delays, outages, or regional gaps
• Local microclimate effects may not be fully captured in regional forecasts
• Institutional closure decisions include non-weather factors
• Probability scores are estimates, not guarantees

Whenever accuracy is critical, users should confirm conditions and decisions through official weather services, local authorities, and school district communications.

Data providers referenced for context and methodology transparency may include organizations such as national weather agencies and recognized forecast institutions (for example: NOAA, National Weather Service, Environment and Climate Change Canada, and the UK Met Office). 

References are for source transparency only and do not imply endorsement.

Methodology and data usage practices are periodically reviewed and refined to improve clarity and performance.