Blue = Chance of a Snow Storm.
Red = Chance of a Rain Storm.
Orange = Chance of a Winter Storm.
May result in Rain, Snow, or Sleet. Expected conditions (temperature and humidity) are too close to predict the type of precipitation.
SnowChance calculates the likelihood of a Winter Storm entering a region on a specific day.
Chance, either low or high, is not a direct prediction of rain, snow, or sleet. Chance is a prediction of how ideal the conditions are for a storm to enter the region.