Polar Vortex 2025 Iowa. Winter is supposed to be cold—and indeed, in the absence of global warming, the season would be colder than it typically has been in the u.s. Beginning next week, the polar vortex will likely trigger even colder air across the eastern half of the u.s.
Whenever iowa gets a cold air outbreak in winter, the arctic oscillation is usually involved. Forecasts indicate that the arctic polar vortex will deliver frigid winds across large portions of the u.s.