OCR Text |
Show c. d. D. Large I Involve snow in depth as well as width; "build up sufficient momentum to overcome obstacles and reach'or approach the bottom of the slope; are dangerous to life and property. Major: Climatic snow movements whatever the type; extensive in all dimensions; develop sufficient momentum to overcome all obstacles and reach or travel beyond the bottom of the slope; are highly dangerous to life and property. Classification of Avalanche Hazards. 1. 0 or None J Absence of hazard to highway or ski areas in general use by the public. 2. 1 or Low: 3. 2 or Moderate: Intermediate state of avalanche hazard; critical areas would be closed to skiing until slopes had been tested; highway travel possibly restricted; direction of hazard is important. U. 3 or High: 5. Addition of plus or minus to any of the above classifications indicates the direction of hazard, increasing for plus, decreasing for minus. Low degree of hazard; generally appears at beginning of a storm before hazard has had time to develop or after one when conditions are nearly stable again. General avalanche conditions; skiing closely restricted or prohibited; highway closed or open only for short periods. Snow Condition Reports Where reports of snow conditions are made to the public, particularly for winter recreational purposes, only major classifications would be used. The following items are of interest to the general public: 1. 2. 3. H. 5. 6. 7. g. 9. Total depth of snow. Depth of snow fallen in previous 2k hours. Type of new snow; dry, damp, or wet. Condition of the surface; new snow, old snow skipacked, crusted, etc. Condition of the undersurface as it affects skiing conditions. Weather conditions and forecast. Avalanche hazards (if any). Closures. Condition of highways. Classification of skiing conditions, which may vary on different parts of the area. |