CNN PRODUCER NOTE yulia927, a research scientist in Mexico City, Mexico, says it appeared to snow for about 30 minutes Thursday night -- an unusual sight for the middle of August. CNN International meteorologist Brandon Miller tells us it was likely 'hail, not snow, falling from a strong thunderstorm in the area.' He points out that you can hear thunder in the background of the video. In any case, the iReporter says, 'I never saw a nature moment like this during the last eight years in Mexico City.'
- dsashin, CNN iReport producer