Where the Millstone Hill Radar will be scanning during the eclipse.
In addition to blocking visible light, the solar eclipse will block the ultraviolet light that creates the ionosphere, the charged part of the Earth's atmosphere.
The Millstone Hill Incoherent Scatter Radar , the only such radar in the continental U.S., will scan the ionosphere across the eastern half of the continent.
This method of viewing eclipse effects works even when it's cloudy!
View this page Monday starting at 11:30 EST to see a realtime "weather map" of the ionosphere as the eclipse passes over the United States. Every 30 minutes a new scan will start. The maps show where the eclipse has reduced the ionosphere: red means a normal ionosphere and blue means a reduced ionosphere, typical of what happens at night.
The top map is a movie of all the data so far. After that, the maps go from newest at the top to oldest at the bottom.
