Often these types of storms come with bursts of radiation that can affect satellite operations, but this one has not, Berger said. But the most noticeable effect is usually considered a positive. The Aurora Borealis or northern lights that usually can be viewed only in the far north will dip south, so more people should be able to enjoy the colorful sky show. Forecasters were not sure just how far south it would be visible. Forecasters said early Tuesday, before sunrise, auroras were already seen in the northern tier of the U.S., such as Washington state, North Dakota, South Dakota, Minnesota and Wisconsin. Space Weather branch chief Brent Gordon said if the storm effects continued through Tuesday evening, there was a "very strong possibility" that the northern lights could be seen as far south as the middle United States, even Tennessee and Oklahoma
