When it's freezing cold on the Gulf Coast, usually the air is dry and skies are clear. In this rare circumstance, low pressure over the Gulf of Mexico will send moisture into a cold pocket of air over the coast, likely resulting in snowfall.

Erin Davis/Axios Visuals A powerful Arctic outbreak tied in part to the polar vortex is set to send temperatures plummeting by Saturday — and possible snow next week. Why it matters: The hazardous cold could stress the state's electricity grid,