2 3 4 5 6 7 8 9 10 11 Available in or derived from NDFD !! 12 There are (or could be) GIS data layers for these 13 Snow Amount Snow Accum Rate Blowing Snow Ice / SPIA Snow Loading From NDFD Normalized Based on Climatology Derived from NDFD/NOHRSC Normalized Based on Land Cover/Use Same as Experimental Product in CR/SR (Wind/Ice Accumulation) Non- Forecast Land Use, Climatology, Forest/Plains Cover Flash Freeze 14 15 16 17 18 19 Being used in operational IDSS briefings Considerable Customer Feedback (positive and helped to evolve/fine tune the service) 20 21 22 23 24 25 26 27 28 29 Potential Level of Impacts (Experimental) Depicts potential societal disruption due to combination of all aspects of a winter storm (Total snow accumulation, blowing/ drifting snow & rate of snow accumulation) Minor: minor disruption to those not prepared. Recovery time less than 1 day. Moderate: definite impacts to primarily those not prepared. Recovery time about a day. Major: Impacts to even those who prepared. Recovery time up to several days Crippling: Widespread significant impacts. Recovery time of many days to a week.