Probabilistic Heavy Snow and Icing Discussion NWS Weather Prediction Center College Park MD 335 PM EDT Thu Oct 18 2018 Valid 00Z Fri Oct 19 2018 - 00Z Mon Oct 22 2018 Days 1-3... The probability of significant snow (4 inches or more) is less than 10 percent. The probability of significant icing (0.25 inches or more) is less than 10 percent. Pereira