Widespread rain showers are tracking across the Northern Plains Monday as a low-pressure system works east early this week. Severe storms are likely across the Central and Southern Plains this afternoon on the southern side of this system. That low will weaken as it moves east tomorrow and Wednesday yielding rain chances from the Midwest through the Eastern US with less storm potential. Temps won't fall much behind this system as the coldest winter air remains locked away in the Arctic & Siberia for now.