Experts say some eclipse path maps may be off, something that may cause people to miss the eclipse entirely.
Some experts say some maps can be off by anywhere from 100 yards to a half mile when it comes to showing where the path of totality will be. One expert said part of the problem for coming up with lines for the path of totality is the sun can change its shape somewhat.
“If you’re right on the edge and the sun decides to flex a little a bit,” Rich Heuermann with the St. Louis Eclipse 2017 Task Force said. “It can change its size somewhat and it does. Also, there are twinkling effects from the atmosphere. The advice is don’t be right on the edge of the path where there are only a few seconds, move in a few miles.”
Eclipse maps are supposed to have totality figured out down to the foot.