Complex sentence: While much of the Central Plains received heavy rain and damaging tornadoes, regions in higher elevations across the Rockies, including Colorado, Wyoming, Utah, Nebraska and Idaho, received snow, locally a major winter storm.
Split into simpler sentences: While much of the Central Plains received heavy rain and damaging tornadoes. Regions in higher elevations across the Rockies, including Colorado, Wyoming, Utah, Nebraska and Idaho received snow, locally a major winter storm.