On Thursday, July 6, 2017 at 8:16:07 PM UTC-4, Cookie wrote:
Gliders come down and land during a solar eclipse...no lift at all the rest of the day!

Here in the NE US we'll only get a partial eclipse. The sun will be about 1/4 or more covered for about an hour, peaking at about 60% covered. What should we expect for soaring conditions? Will thermals totally quit? How is it different, in terms of solar heating of the ground, from the patches of high clouds that often plague our soaring?