Another Mark Nelsen post
Part of the post quotes an eclipse chaser. His advice:
This is my 26th eclipse trip (16 TSEs seen, 6 annulars, 3 missed because of rain, clouds,and yes, wind). I’ve been using Jay Anderson (Environment Canada, retired meteorologist, who saved my eclipse in Australia by telling me to get off shore) and his blog eclipsophile, which already is looking at the 2 Jul 2019 eclipse. I have access to several other pages there, too, and can attest to what Mark has said regarding the uselessness of predicting cloudiness this far out. A couple of thoughts:
1. High clouds don’t ruin an eclipse; very few of my total viewings were in a clear sky. Puffy cumulus clouds drive you crazy, because you don’t know what they will do. Stratus, of course, is awful. Totally clear is rare; if you get it enjoy.
2. As the atmosphere cools during the partial phases, clouds may form. Then again, any convection (looking unlikely) gets shut off. The most I’ve seen the temp drop is 11 C (20 F). With moderately high dew points, the drop will probably be less.
3. Smoke is likely to be a concern for this eclipse, but the haze we had last week would have been OK, just not optimal, for viewing. I was camped out in northern Washington a week before, and you could barely see the Sun at all.
4. That said, I will be north of Ontario, about 1300 meters if I can (4200′), and have bail out plans in both directions, although it would have to be a major difference to consider going a long distance on eclipse AM. It wouldn’t be the first time. Hope all the eclipse virgins get to see it.
I’ve give a lot of talks from here to Prairie City, and tell people three things:
1. Totality is worth seeing. (Recent TED talk worth viewing).
2. Be safe, both in getting to the path and protecting your eyes.
3. If it’s your first, don’t take pictures. You’ll see better ones, mine have gathered dust, and every second spent looking at the camera takes away from the experience. This may be the only one you ever see. Enjoy it!