Probabilistic Heavy Snow and Icing Discussion NWS Weather Prediction Center College Park MD 410 PM EDT Fri Oct 04 2019 Valid 00Z Sat Oct 05 2019 - 00Z Tue Oct 08 2019 Day 1... The probability of receiving at least 8 inches of snow and/or 0.25 inch of ice over the northern Rockies below 7500 feet is less than 10 percent. Days 2 and 3... The probability of receiving at least 4 inches of snow and/or 0.25 inch of ice is less than 10 percent in all areas. Hurley