How did we not see you? We camped just west of the Naturalist Basin turnoff on the Highline Trail Friday night. Then on Saturday morning, we did ridge around the basin (from that shoulder right before you drop into the basin itself, we went up the ridge and traversed around to Cyclone Pass) and hiked back through the basin around noon-ish, maybe a half hour or so before the storms started rolling in. I couldn't find any record online of anybody hiking that ridge, but it was pretty straight-forward with just one easy scramble section. And the views of Rock Creek, Naturalist, and Four Lakes basins were stunning. We were three dudes in obnoxiously orange shirts (total coincidence) rolling through in case you saw us.
And yes the storm yesterday afternoon was something to behold; we had hail that was closer to dime-size than pea-size on the way back. Did it storm this afternoon as well? The clouds to the east looked pretty fearsome.