To better meet the needs of individuals and businesses, AccuWeather introduced a proprietary scale that covers the full impact of tropical weather. Called the AccuWeather RealImpact Scale for Hurricanes, this innovative six-point scale is based on a broad range of important factors designed to provide practical and critical information people can use to evaluate the threat posed by a hurricane or tropical storm and take the appropriate steps to stay safe and protect property. The widely used Saffir-Simpson scale, which has been used by meteorologists for decades, classifies storms by wind speed only.