Probabilistic Heavy Snow and Icing Discussion NWS Weather Prediction Center College Park MD 414 PM EDT Mon Oct 04 2021 Valid 00Z Tue Oct 05 2021 - 00Z Fri Oct 08 2021 For Days 1-3, the probabilities for heavy snow (4 inches or more) or significant icing (0.25 inch or more) are less than 10 percent. Fracasso