They then travel across 1000 miles or so of desert which removes a lot of the remaining moisture content. Now at the base of Utah's Wasatch mountain range lies the Great Salt Lake and as storms pass over this, they are recharge by the lake's evaporation. While most natural snow crystals for on microscopic nuclei of dust or spore particles, the Great Salt Lake evaporation uniquely provides salt nucelli. The final ingredient to this snow making Mecca is 'Box Canyons'. Picture an open shoebox with one of the ends ripped off and you'll have good image of a box canyon.
Storms enter through the ripped off end and start dumping.
As the storm moves up the canyon, they become trapped and sit there going round and round dumping blankets of Utah gold.