We arrived in Grand Teton National Park mid-day and checked into our campsite at Gros Ventre campground. I highly recommend this campground if you don't want super crowded. Also, you can walk a little way through the trees, right from your campsite, to the Gros Ventre River. Yes, it's cold. But it was so fantastic to rinse off after a couple days of driving.
When we got back to the site, the sky had completely changed and we started hearing thunder. This may have been the most terrifying night of my life. Yes, our campsite was awesome because we were right at the edge of a cliff and could see views in all directions. And yes, our campsite was really not the best place to be during a thunderstorm (there were even a couple of trees on the site that showed evidence of previous lightning strikes.) We hid in our tents for the rest of the night. Me with my eyes closed tight and trying to follow conflicting instructions I'd heard about what to do in a lightning storm. Allyson with her eyes wide open watching the tent light up from every direction and praying that we didn't get struck. I can't really tell you when the storm finally passed because it felt like I was freaking out in the tent for days. However, we made it and the next day was as beautiful as the last.