Mammoth Mountain

Storm Day Strategy

Storm days are highly variable and challenging. February 13-14 storm produced whiteout conditions with zero visibility ('snow globe effect'). Route 395 closed (18 miles north of Bishop to June Lake). Approach: (1) Arrive at mountain with low expectations and visibility assessment; (2) Early morning arrivals acceptable but conditions worsen as day progresses; (3) Chair 4 opens first but visibility may be extreme whiteout - only ski if experienced in flat light; (4) Chair 8 skiable with poor visibility if comfortable; (5) Have backup accommodation plan (Bishop lodging recommended); (6) 2+ feet of overnight snow typical but forecasts conservative; (7) Heavy wind development expected after initial snow bands - avoid exposed high terrain once winds increase; (8) Only ski storm days 'if you know what you don't know' - conditions unpredictable and potentially dangerous; (9) Be prepared to call it after 1-4 hours if visibility/conditions deteriorate. Locals: avoid committing to must-ski storm days for visiting.