# Snow Day Calculator

## Description
Snow Day Calculator (snowdaycheck.app) calculates the probability of school closures based on National Weather Service (NWS) data. It analyzes factors like snow accumulation, ice, wind chill, and visibility.

## Usage
Users enter a 5-digit zip code. The tool returns a percentage chance (0-100%) and a forecast breakdown.

## Logic & Factors
- **Snow Accumulation**: Heavy snow (6"+) or wet/heavy snow increases chance.
- **Ice/Freezing Rain**: Highly weighted factor (>0.1" accumulation).
- **Extreme Cold**: Wind chills below -20°F significantly increase school closure probability.
- **Timing**: Precipitation during morning commute (4 AM - 9 AM) has a multiplier effect.
- **Visibility**: Blowing snow or whiteout conditions are considered.

## Links
- [Home](https://snowdaycheck.app)
- [Privacy Policy](https://snowdaycheck.app/privacy)